TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS www.ti.com SLVS638B - MAY 2006 - REVISED JANUARY 2007 FEATURES * * * * * * * APPLICATIONS * * * * Simple High-Efficiency Step-Down (Buck) Regulators Pre-Regulators for Linear Regulators On-Card Switching Regulators Positive-to-Negative Converters (Buck-Boost) 5 4 3 2 1 GND * KTT (TO-263) PACKAGE (TOP VIEW) Fixed 3.3-V, 5-V, 12-V, and 15-V Options With 5% Regulation (Max) Over Line, Load, and Temperature Conditions Adjustable Option With a Range of 1.23 V to 37 V (57 V for HV Version) and 4% Regulation (Max) Over Line, Load, and Temperature Conditions Specified 1-A Output Current Wide Input Voltage Range...4.75 V to 40 V (60 V for HV Version) Require Only Four External Components (Fixed Versions) and Use Readily Available Standard Inductors 52-kHz (Typ) Fixed-Frequency Internal Oscillator TTL Shutdown Capability With 50-A (Typ) Standby Current High Efficiency...as High as 88% (Typ) Thermal Shutdown and Current-Limit Protection With Cycle-by-Cycle Current Limiting ON/OFF FEEDBACK GND OUTPUT VIN N (PDIP) PACKAGE (TOP VIEW) NC NC OUTPUT NC GND NC FEEDBACK NC 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 VIN NC NC GND GND NC NC ON/OFF NC - No internal connection KV (TO-220 STAGGERED LEADS) PACKAGE (TOP VIEW) GND * 5 4 3 2 1 (SIDE VIEW) ON/OFF FEEDBACK GND OUTPUT VIN Pins 1, 3, 5 Pins 2, 4 DESCRIPTION/ORDERING INFORMATION The TL2575 and TL2575HV greatly simplify the design of switching power supplies by conveniently providing all the active functions needed for a step-down (buck) switching regulator in an integrated circuit. Accepting a wide input voltage range of up to 60 V (HV version) and available in fixed output voltages of 3.3 V, 5 V, 12 V, 15 V, or an adjustable-output version, the TL2575 and TL2575HV have an integrated switch capable of delivering 1 A of load current, with excellent line and load regulation. The device also offers internal frequency compensation, a fixed-frequency oscillator, cycle-by-cycle current limiting, and thermal shutdown. In addition, a manual shutdown is available via an external ON/OFF pin. The TL2575 and TL2575HV represent superior alternatives to popular three-terminal linear regulators. Due to their high efficiency, the devices significantly reduce the size of the heatsink and, in many cases, no heatsink is required. Optimized for use with standard series of inductors available from several different manufacturers, the TL2575 and TL2575HV greatly simplify the design of switch-mode power supplies by requiring a minimal addition of only four to six external components for operation. The TL2575 and TL2575HV are characterized for operation over the virtual junction temperature range of -40C to 125C. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PowerPAD, PowerFLEX are trademarks of Texas Instruments. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright (c) 2006-2007, Texas Instruments Incorporated TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS www.ti.com SLVS638B - MAY 2006 - REVISED JANUARY 2007 ORDERING INFORMATION (1) TL2575 (VIN(MAX) = 40 V) TJ VO (NOM) 3.3 V 5V -40C to 125C 12 V 15 V ADJ (1) (2) PACKAGE (2) ORDERABLE PART NUMBER TOP-SIDE MARKING PDIP - N Tube of 25 TL2575-33IN TL2575-33IN TO-263 - KTT Reel of 500 TL2575-33IKTTR TL2575-33I TO-220 - KV Tube of 50 TL2575-33IKV TL2575-33I PDIP - N Tube of 25 TL2575-05IN TL2575-05IN TO-263 - KTT Reel of 500 TL2575-05IKTTR TL2575-05I TO-220 - KV Tube of 50 TL2575-05IKV TL2575-05I PDIP - N Tube of 25 TL2575-12IN TL2575-12IN TO-263 - KTT Reel of 500 TL2575-12IKTTR TL2575-12I TO-220 - KV Tube of 50 TL2575-12IKV TL2575-12I PDIP - N Tube of 25 TL2575-15IN TL2575-15IN TO-263 - KTT Reel of 500 TL2575-15IKTTR TL2575-15I TO-220 - KV Tube of 50 TL2575-15IKV TL2575-15I PDIP - N Tube of 25 TL2575-ADJIN TL2575-ADJIN TO-263 - KTT Reel of 500 TL2575-ADJIKTTR TL2575ADJI TO-220 - KV Tube of 50 TL2575-ADJIKV TL2575ADJI For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com. Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. ORDERING INFORMATION (1) TL2575HV (VIN(MAX) = 60 V) TJ VO (NOM) 3.3 V 5V -40C to 125C 12 V 15 V ADJ (1) (2) 2 PACKAGE (2) ORDERABLE PART NUMBER TOP-SIDE MARKING PDIP - N Tube of 25 TL2575HV-33IN TL2575HV-33IN TO-263 - KTT Reel of 500 TL2575HV-33IKTTR 2BHV-33I TO-220 - KV Tube of 50 TL2575HV-33IKV TL2575HV-33I PDIP - N Tube of 25 TL2575HV-05IN TL2575HV-05IN TO-263 - KTT Reel of 500 TL2575HV-05IKTTR 2BHV-05I TO-220 - KV Tube of 50 TL2575HV-05IKV TL2575HV-05I PDIP - N Tube of 25 TL2575HV-12IN TL2575HV-12IN TO-263 - KTT Reel of 500 TL2575HV-12IKTTR 2BHV-12I TO-220 - KV Tube of 50 TL2575HV-12IKV TL2575HV-12I PDIP - N Tube of 25 TL2575HV-15IN TL2575HV-15IN TO-263 - KTT Reel of 500 TL2575HV-15IKTTR 2BHV-15I TO-220 - KV Tube of 50 TL2575HV-15IKV TL2575HV-15I PDIP - N Tube of 25 TL2575HV-ADJIN TL2575HV-ADJIN TO-263 - KTT Reel of 500 TL2575HV-ADJIKTTR 2BHV-ADJI TO-220 - KV Tube of 50 TL2575HV-ADJIKV TL2575HVADJI For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com. Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Submit Documentation Feedback TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS www.ti.com SLVS638B - MAY 2006 - REVISED JANUARY 2007 FUNCTIONAL BLOCK DIAGRAM VIN Unregulated DC Input Internal Regulator 1 + ON/OFF On/Off 5 CIN FEEDBACK 4 Fixed-Gain Error Amplifier R2 R1 1 kW Comparator + _ + _ Driver 1-A Switch OUTPUT L1 2 + D1 1.23-V Band-Gap Reference VOUT COUT GND 52-kHz Oscillator Reset Thermal Shutdown Current Limit 3 L O A D 3.3 V: R2 = 1.7 kW 5 V: R2 = 3.1 kW 12 V: R2 = 8.84 kW 15 V: R2 = 11.3 kW ADJ: R1 = Open, R2 = 0 A. Pin numbers are for the KTT (TO-263) package. FEEDBACK 4 7-V to 40-V Unregulated DC Input +VIN TL2575-05 1 3 + GND 5 OUTPUT 2 L1 L2 330 H 20 H 5-V Regulated Output 1-A Load ON/OFF CIN 100 F D1 1N5819 + COUT 330 F C1 100 F + Optional Output Ripple Filter A. Pin numbers are for the KTT (TO-263) package. Figure 1. Typical Application Circuit (Fixed Version) Submit Documentation Feedback 3 TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS www.ti.com SLVS638B - MAY 2006 - REVISED JANUARY 2007 Absolute Maximum Ratings (1) over operating free-air temperature range (unless otherwise noted) MIN VIN Supply voltage 60 TL2575 42 ON/OFF input voltage range -0.3 Output voltage to GND (steady state) TJ Maximum junction temperature Tstg Storage temperature range (1) MAX TL2575HV -65 UNIT V VIN V -1 V 150 C 150 C Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. Package Thermal Data (1) (1) (2) PACKAGE BOARD JA JC JP (2) PDIP (N) High K, JESD 51-7 67C/W 57C/W TO-263 (KTT) High K, JESD 51-5 26.5C/W 31.8C/W 0.38C/W TO-220 (KV) High K, JESD 51-5 26.5C/W 31.8C/W 0.38C/W Maximum power dissipation is a function of TJ(max), JA, and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) - TA)/JA. Operating at the absolute maximum TJ of 150C can affect reliability. For packages with exposed thermal pads, such as QFN, PowerPADTM, or PowerFLEXTM, JP is defined as the thermal resistance between the die junction and the bottom of the exposed pad. Recommended Operating Conditions 4 VIN Supply voltage TJ Operating virtual junction temperature MIN MAX TL2575HV 4.75 60 TL2575 4.75 40 -40 125 Submit Documentation Feedback UNIT V C TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS www.ti.com SLVS638B - MAY 2006 - REVISED JANUARY 2007 TL2575 Electrical Characteristics ILOAD = 200 mA, VIN = 12 V for 3.3-V, 5-V, and adjustable versions, VIN = 25 V for 12-V version, VIN = 30 V for 15-V version (unless otherwise noted) (see Figure 2) PARAMETER TEST CONDITIONS TL2575-33 TL2575-05 VOUT Output voltage TL2575-12 TL2575-15 Feedback voltage Efficiency TL2575-ADJ TJ MAX VIN = 12 V, ILOAD = 0.2 A 25C 3.234 3.3 3.366 4.75 V VIN 40 V, 0.2 A ILOAD 1 A 25C 3.168 3.3 3.432 Full range 3.135 25C 4.9 5 5.1 8 V VIN 40 V, 0.2 A ILOAD 1 A 25C 4.8 5 5.2 Full range 4.75 VIN = 25 V, ILOAD = 0.2 A 25C 11.76 12 12.24 15 V VIN 40 V, 0.2 A ILOAD 1 A 25C 11.52 12 12.48 5.25 Full range 11.4 VIN = 30 V, ILOAD = 0.2 A 25C 14.7 15 18 V VIN 40 V, 0.2 A ILOAD 1 A 25C 14.4 15 15.6 Full range 14.25 15 15.75 25C 1.217 1.23 1.243 25C 1.193 1.23 1.267 Full range 1.18 VIN = 12 V, VOUT = 5 V, ILOAD = 0.2 A 8 V VIN 40 V, VOUT = 5 V, 0.2 A ILOAD 1 A VIN = 12 V, ILOAD = 1 A 77 TL2575-12 VIN = 15 V, ILOAD = 1 A TL2575-15 VIN = 18 V, ILOAD = 1 A 88 TL2575-ADJ VIN = 12 V, VOUT = 5 V, ILOAD = 1 A 77 fo Oscillator frequency (1) VSAT Saturation voltage IOUT = 1 A (2) ICL Switch peak current (1) (2) IL Output leakage current 25C IQ Quiescent current (4) ISTBY Standby quiescent current VIN = 50 47 Full range 42 25C 52 0.9 93 98 25C 1.7 2.8 Full range 1.3 OFF (ON/OFF = 5 V) 58 1.2 1.4 25C Output = -1 V 100 63 Full range 25C V % 500 25C VIN = 40 (4), Output = 0 V 40 (4), 88 Full range Maximum duty cycle (3) 15.3 1.28 TL2575-05 VOUT = 5 V (ADJ version only) V 12.6 75 25C UNIT 3.465 VIN = 12 V, ILOAD = 0.2 A VIN = 12 V, ILOAD = 1 A Feedback bias current (2) (3) (4) TYP TL2575-33 IIB (1) TL2575 MIN kHz V % 3.6 4 2 7.5 nA 30 A mA 25C 5 10 mA 25C 50 200 A In the event of an output short or an overload condition, self-protection features lower the oscillator frequency to 18 kHz and the minimum duty cycle from 5% to 2%. The resulting output voltage drops to 40% of its nominal value, causing the average power dissipated by the IC to lower. Output is not connected to diode, inductor, or capacitor. Output is sourcing current. FEEDBACK is disconnected from output and connected to 0 V. To force the output transistor off, FEEDBACK is disconnected from output and connected to 12 V for the adjustable, 3.3-V, and 5-V versions and to 25 V for the 12-V and 15-V versions. Submit Documentation Feedback 5 TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS www.ti.com SLVS638B - MAY 2006 - REVISED JANUARY 2007 TL2575 Electrical Characteristics (continued) ILOAD = 200 mA, VIN = 12 V for 3.3-V, 5-V, and adjustable versions, VIN = 25 V for 12-V version, VIN = 30 V for 15-V version (unless otherwise noted) (see Figure 2) PARAMETER 6 TEST CONDITIONS TJ TL2575 MIN TYP 25C 2.2 1.4 Full range 2.4 MAX UNIT VIH ON/OFF high-level logic input voltage OFF (VOUT = 0 V) VIL ON/OFF low-level logic input voltage ON (VOUT = nominal voltage) IIH ON/OFF high-level input current OFF (ON/OFF = 5 V) 25C 12 30 A IIL ON/OFF low-level input current ON (ON/OFF = 0 V) 25C 0 10 A 25C 1.2 Full range Submit Documentation Feedback V 1 0.8 V TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS www.ti.com SLVS638B - MAY 2006 - REVISED JANUARY 2007 TL2575HV Electrical Characteristics ILOAD = 200 mA, VIN = 12 V for 3.3-V, 5-V, and adjustable versions, VIN = 25 V for 12-V version, VIN = 30 V for 15-V version (unless otherwise noted) (see Figure 2) PARAMETER TEST CONDITIONS TL2575HV-33 TL2575HV-05 VOUT Output voltage TL2575HV-12 TL2575HV-15 Feedback voltage Efficiency TL2575HV-ADJ TJ MAX VIN = 12 V, ILOAD = 0.2 A 25C 3.234 3.3 3.366 4.75 V VIN 60 V, 0.2 A ILOAD 1 A 25C 3.168 3.3 3.450 Full range 3.135 25C 4.9 5 5.1 8 V VIN 60 V, 0.2 A ILOAD 1 A 25C 4.8 5 5.225 Full range 4.75 VIN = 25 V, ILOAD = 0.2 A 25C 11.76 12 12.24 15 V VIN 60 V, 0.2 A ILOAD 1 A 25C 11.52 12 12.54 5.275 Full range 11.4 VIN = 30 V, ILOAD = 0.2 A 25C 14.7 15 15.3 18 V VIN 60 V, 0.2 A ILOAD 1 A 25C 14.4 15 15.68 Full range 14.25 15 15.83 25C 1.217 1.23 1.243 25C 1.193 1.23 1.273 Full range 1.180 VIN = 12 V, VOUT = 5 V, ILOAD = 0.2 A 8 V VIN 60 V, VOUT = 5 V, 0.2 A ILOAD 1 A VIN = 12 V, ILOAD = 1 A 77 TL2575HV-12 VIN = 15 V, ILOAD = 1 A TL2575HV-15 VIN = 18 V, ILOAD = 1 A 88 TL2575HV-ADJ VIN = 12 V, VOUT = 5 V, ILOAD = 1 A 77 fo Oscillator frequency (1) VSAT Saturation voltage IOUT = 1 A (2) Switch peak current (1) (2) IL Output leakage current 47 Full range 42 25C IQ Quiescent current (4) ISTBY Standby quiescent current VIN = 52 0.9 93 98 25C 1.7 2.8 Full range 1.3 OFF (ON/OFF = 5 V) 58 1.2 1.4 25C Output = -1 V 100 63 Full range 25C % 500 25C VIN = 60 (4), Output = 0 V 60 (4), 50 Full range Maximum duty cycle (3) ICL 88 25C V 1.286 TL2575HV-05 VOUT = 5 V (ADJ version only) V 12.66 75 25C UNIT 3.482 VIN = 12 V, ILOAD = 0.2 A VIN = 12 V, ILOAD = 1 A Feedback bias current (2) (3) (4) TYP TL2575HV-33 IIB (1) TL2575HV MIN kHz V % 3.6 4 2 7.5 nA 30 A mA 25C 5 10 mA 25C 50 200 A In the event of an output short or an overload condition, self-protection features lower the oscillator frequency to 18 kHz and the minimum duty cycle from 5% to 2%. The resulting output voltage drops to 40% of its nominal value, causing the average power dissipated by the IC to lower. Output is not connected to diode, inductor, or capacitor. Output is sourcing current. FEEDBACK is disconnected from output and connected to 0 V. To force the output transistor off, FEEDBACK is disconnected from output and connected to 12 V for the adjustable, 3.3-V, and 5-V versions and to 25 V for the 12-V and 15-V versions. Submit Documentation Feedback 7 TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS www.ti.com SLVS638B - MAY 2006 - REVISED JANUARY 2007 TL2575HV Electrical Characteristics (continued) ILOAD = 200 mA, VIN = 12 V for 3.3-V, 5-V, and adjustable versions, VIN = 25 V for 12-V version, VIN = 30 V for 15-V version (unless otherwise noted) (see Figure 2) PARAMETER 8 TEST CONDITIONS VIH ON/OFF high-level logic input voltage VIL ON/OFF low-level logic input voltage ON (VOUT = nominal voltage) IIH ON/OFF high-level input current OFF (ON/OFF = 5 V) IIL ON/OFF low-level input current ON (ON/OFF = 0 V) OFF (VOUT = 0 V) TJ TL2575HV MIN TYP 25C 2.2 1.4 Full range 2.4 25C 1.2 Full range Submit Documentation Feedback 25C MAX UNIT V 1 0.8 V 12 30 A 0 10 A TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS www.ti.com SLVS638B - MAY 2006 - REVISED JANUARY 2007 TEST CIRCUITS Fixed-Output Voltage FEEDBACK 4 +VIN TL2575-xx Fixed Output 1 OUTPUT 3 + GND VOUT 330 H 2 VIN Unregulated DC Input L1 5 ON/OFF L O A D D1 CIN 100 F + COUT 330 F CIN = 100 F, Aluminum Electrolytic COUT = 330 F, Aluminum Electrolytic D1 = Schottky L1 = 330 H (for 5-V VIN with 3.3-V VOUT, use 100 mH) Adjustable-Output Voltage +VIN 1 FEEDBACK 4 TL2575 (ADJ) OUTPUT 2 7-V to 40-V Unregulated DC Input L1 VOUT 330 H R2 + CIN 100 F 3 GND 5 ON/OFF D1 11DQ06 + L O A D COUT 330 F R1 VOUT = VREF(1 + R2/R1) = 5 V VREF = 1.23 V R1 = 2 kW R2 = 6.12 kW A. Pin numbers are for the KTT (TO-263) package. Figure 2. Test Circuits and Layout Guidelines Submit Documentation Feedback 9 TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS www.ti.com SLVS638B - MAY 2006 - REVISED JANUARY 2007 TYPICAL CHARACTERISTICS 1 Output Voltage Change - % 0.6 0.2 0 -0.2 -0.4 -0.6 0.6 0.4 0.2 0 -0.2 -0.6 -25 0 25 50 75 100 125 0 150 10 20 30 40 50 TA - Temperature - C VIN - Input Voltage - V Figure 3. Normalized Output Voltage Figure 4. Line Regulation 2 DVOUT = 5% RIND = 0.2 W 2.5 1.5 ILOAD = 1 A 1.25 1 0.75 ILOAD = 200 mA 0.5 0.25 2 1.5 1 0.5 0 -40 -25 -10 5 20 35 50 65 80 95 110 125 TJ - Junction Temperature - C 0 -50 -25 0 25 50 75 100 TJ - Junction Temperature - C Figure 5. Dropout Voltage 10 60 3 IO - Output Current - A Input-Output Differential - V 0.8 -0.4 -0.8 1.75 TJ = 25C 1 TJ = 25C 0.4 -1 -50 ILOAD = 200 mA 1.2 ILOAD = 200 mA Output Voltage Change - % 0.8 1.4 VIN = 20 V Figure 6. Current Limit Submit Documentation Feedback 125 150 TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS www.ti.com SLVS638B - MAY 2006 - REVISED JANUARY 2007 TYPICAL CHARACTERISTICS (continued) 500 VON/OFF = 5 V 18 VOUT = 5 V 16 TJ = 25C Measured at GND pin ISTBY - Standby Quiescent Current - A IQ - Quiescent Current - mA 20 14 12 10 ILOAD = 1 A 8 6 ILOAD = 0.2 A 4 2 0 0 10 20 30 40 50 450 VIN = 40 V 400 350 300 250 200 150 100 VIN = 12 V 50 0 -50 60 -25 0 25 50 75 100 125 VIN - Input Voltage - V TJ - Junction Temperature - C Figure 7. Quiescent Current Figure 8. Standby Quiescent Current 10 150 1.2 Normalized at TJ = 25C 1.1 6 VIN = 12 V VSAT - Saturation Voltage - V f NORM - Normalized Frequency - % 8 4 2 0 VIN = 40 V -2 -4 -6 -8 -10 -50 1 TJ = -40C 0.9 0.8 TJ = 25C 0.7 0.6 TJ = 125C 0.5 -25 0 25 50 75 100 125 150 0.4 0 TJ - Junction Temperature - C Figure 9. Oscillator Frequency Submit Documentation Feedback 0.2 0.4 0.6 0.8 1 ISW - Switch Current - A Figure 10. Switch Saturation Voltage 11 TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS www.ti.com SLVS638B - MAY 2006 - REVISED JANUARY 2007 TYPICAL CHARACTERISTICS (continued) 5 100 Adjustable version only 90 80 IIB - Feedback Bias Current - nA 4.5 VIN - Input Voltage - V 4 3.5 3 2.5 2 1.5 1 0.5 0 -50 -25 0 25 50 75 100 125 70 60 50 40 30 20 10 0 -10 -20 -30 -40 -50 -50 150 Adjustable version only -25 0 25 50 75 100 TJ - Junction Temperature - C TJ - Junction Temperature - C Figure 11. Minimum Operating Voltage Figure 12. FEEDBACK Current 125 150 VOUT = 5 V A B C { 0V { 0A { 0A { 4 s/Div A. Output pin voltage, 10 V/Div B. Output pin current, 1 A/Div C. Inductor current, 0.5 A/Div D. Ouput ripple voltage, 20 mV/Div Figure 13. Switching Waveforms 12 Submit Documentation Feedback D TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS www.ti.com SLVS638B - MAY 2006 - REVISED JANUARY 2007 TYPICAL CHARACTERISTICS (continued) 0.2 ILOAD - Load Current - A 0.15 0.1 0.05 0 -0.05 -0.1 -0.15 -0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.5 0.6 0.7 0.8 0.9 t - Time - ms 1.6 1.4 ILOAD - Load Current - A 1.2 1 0.8 0.6 0.4 0.2 0 -0.1 0 0.1 0.2 0.3 0.4 t - Time - ms Figure 14. Load Transient Response Submit Documentation Feedback 13 TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS www.ti.com SLVS638B - MAY 2006 - REVISED JANUARY 2007 APPLICATION INFORMATION Input Capacitor (CIN) For stability concerns, an input bypass capacitor (electrolytic, CIN 47 F) needs to be located as close as possible to the regulator. For operating temperatures below -25C, CIN may need to be larger in value. In addition, since most electrolytic capacitors have decreasing capacitances and increasing ESR as temperature drops, adding a ceramic or solid tantalum capacitor in parallel increases the stability in cold temperatures. To extend the capacitor operating lifetime, the capacitor RMS ripple current rating should be: IC,RMS > 1.2(ton/T)ILOAD where ton/T = VOUT/VIN {buck regulator} and ton/T = |VOUT|/(|VOUT| + VIN) {buck-boost regulator} Output Capacitor (COUT) For both loop stability and filtering of ripple voltage, an output capacitor also is required, again in close proximity to the regulator. For best performance, low-ESR aluminum electrolytics are recommended, although standard aluminum electrolytics may be adequate for some applications. Based on the following equation: Output ripple voltage = (ESR of COUT) x (inductor ripple current) Output ripple of 50 mV to 150 mV typically can be achieved with capacitor values of 220 F to 680 F. Larger COUT can reduce the ripple 20 mV to 50 mV peak to peak. To improve further on output ripple, paralleling of standard electrolytic capacitors may be used. Alternatively, higher-grade capacitors such as high frequency, low inductance, or low ESR can be used. The following should be taken into account when selecting COUT: * At cold temperatures, the ESR of the electrolytic capacitors can rise dramatically (typically 3x nominal value at -25C). Because solid tantalum capacitors have significantly better ESR specifications at cold temperatures, they should be used at operating temperature lower than -25C. As an alternative, tantalums also can be paralleled to aluminum electrolytics and should contribute 10% to 20% to the total capacitance. * Low ESR for COUT is desirable for low output ripple. However, the ESR should be greater than 0.05 to avoid the possibility of regulator instability. Hence, a sole tantalum capacitor used for COUT is most susceptible to this occurrence. * The capacitor's ripple current rating of 52 kHz should be at least 50% higher than the peak-to-peak inductor ripple current. Catch Diode As with other external components, the catch diode should be placed close to the output to minimize unwanted noise. Schottky diodes have fast switching speeds and low forward voltage drops and, thus, offer the best performance, especially for switching regulators with low output voltages (VOUT < 5 V). If a high-efficiency, fast-recovery, or ultra-fast-recovery diode is used in place of a Schottky, it should have a soft recovery (versus abrupt turn-off characteristics) to avoid the chance of causing instability and EMI. Standard 50-/60-Hz diodes, such as the 1N4001 or 1N5400 series, are not suitable. 14 Submit Documentation Feedback www.ti.com TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS SLVS638B - MAY 2006 - REVISED JANUARY 2007 APPLICATION INFORMATION (continued) Inductor Proper inductor selection is key to the performance-switching power-supply designs. One important factor to consider is whether the regulator is used in continuous mode (inductor current flows continuously and never drops to zero) or in discontinuous mode (inductor current goes to zero during the normal switching cycle). Each mode has distinctively different operating characteristics and, therefore, can affect the regulator performance and requirements. In many applications, the continuous mode is the preferred mode of operation, since it offers greater output power with lower peak currents, and also can result in lower output ripple voltage. The advantages of continuous mode of operation come at the expense of a larger inductor required to keep inductor current continuous, especially at low output currents and/or high input voltages. The TL2575 and TL2575HV can operate in either continuous or discontinuous mode. With heavy load currents, the inductor current flows continuously and the regulator operates in continuous mode. Under light load, the inductor fully discharges and the regulator is forced into the discontinuous mode of operation. For light loads (approximately 200 mA or less), this discontinuous mode of operation is perfectly acceptable and may be desirable solely to keep the inductor value and size small. Any buck regulator eventually operates in discontinuous mode when the load current is light enough. The type of inductor chosen can have advantages and disadvantages. If high performance/quality is a concern, then more-expensive toroid core inductors are the best choice, as the magnetic flux is contained completely within the core, resulting in less EMI and noise in nearby sensitive circuits. Inexpensive bobbin core inductors, however, generate more EMI as the open core does not confine the flux within the core. Multiple switching regulators located in proximity to each other are particularly susceptible to mutual coupling of magnetic fluxes from each other's open cores. In these situations, closed magnetic structures (such as a toroid, pot core, or E-core) are more appropriate. Regardless of the type and value of inductor used, the inductor never should carry more than its rated current. Doing so may cause the inductor to saturate, in which case the inductance quickly drops, and the inductor looks like a low-value resistor (from the dc resistance of the windings). As a result, switching current rises dramatically (until limited by the current-by-current limiting feature of the TL2575 and TL2575HV) and can result in overheating of the inductor and the IC itself. Note that different types of inductors have different saturation characteristics. Output Voltage Ripple and Transients As with any switching power supply, the output of the TL2575 and TL2575HV have a sawtooth ripple voltage at the switching frequency. Typically about 1% of the output voltage, this ripple is due mainly to the inductor sawtooth ripple current and the ESR of the output capacitor (see note on COUT). Furthermore, the output also may contain small voltage spikes at the peaks of the sawtooth waveform. This is due to the fast switching of the output switch and the parasitic inductance of COUT. These voltage spikes can be minimized through the use of low-inductance capacitors. There are several ways to reduce the output ripple voltage: a larger inductor, a larger COUT, or both. Another method is to use a small LC filter (20 H and 100 F) at the output. This filter can reduce the output ripple voltage by a factor of 10 (see Figure 2). Feedback Connection For fixed-voltage options, FEEDBACK must be wired to VOUT. For the adjustable version, FEEDBACK must be connected between the two programming resistors. Again, both of these resistors should be in close proximity to the regulator, and each should be less than 100 k to minimize noise pickup. ON/OFF Input ON/OFF should be grounded or be a low-level TTL voltage (typically <1.6 V) for normal operation. To shut down the TL2575 or TL2575HV and put it in standby mode, a high-level TTL or CMOS voltage should be supplied to this pin. ON/OFF should not be left open and safely can be pulled up to VIN with or without a pullup resistor. Submit Documentation Feedback 15 TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS www.ti.com SLVS638B - MAY 2006 - REVISED JANUARY 2007 APPLICATION INFORMATION (continued) Grounding The power and ground connections of the TL2575 and TL2575HV must be low impedance to help maintain output stability. For the 5-pin packages, both pin 3 and tab are ground, and either connection can be used as they are both part of the same lead frame. With the 16-pin package, all the ground pins (including signal and power grounds) should be soldered directly to wide PCB copper traces to ensure low-inductance connections and good thermal dissipation. Layout Guidelines With any switching regulator, circuit layout plays an important role in circuit performance. Wiring and parasitic inductances, as well as stray capacitances, are subjected to rapidly switching currents, which can result in unwanted voltage transients. To minimize inductance and ground loops, the length of the leads indicated by heavy lines should be minimized. Optimal results can be achieved by single-point grounding (see Figure 2) or by ground-plane construction. For the same reasons, the two programming resistors used in the adjustable version should be located as close as possible to the regulator to keep the sensitive feedback wiring short. 16 Submit Documentation Feedback TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS www.ti.com SLVS638B - MAY 2006 - REVISED JANUARY 2007 BUCK REGULATOR DESIGN PROCEDURE PROCEDURE (Fixed Output) EXAMPLE (Fixed Output) Known: VOUT = 3.3 V, 5 V, 12 V, or 15 V VIN(Max) = Maximum input voltage ILOAD(Max) = Maximum load current Known: VOUT = 5 V VIN(Max) = 20 V ILOAD(Max) = 1 A 1. Inductor Selection (L1) 1. Inductor Selection (L1) A. From Figure 15 through Figure 18, select the appropriate inductor A. From Figure 16 (TL2575-05), the intersection of 20-V line and code based on the intersection of VIN(Max) and ILOAD(Max). 1-A line gives an inductor code of L330. B. From Table 2, choose the appropriate inductor based on the inductor code. Parts from three well-known inductor manufacturers are given. The inductor chosen should be rated for operation at 52-kHz and have a current rating of at least 1.15 x ILOAD(Max) to allow for the ripple current. The actual peak current in L1 (in normal operation) can be calculated as follows: IL1(pk) = ILOAD(Max) + (VIN - VOUT) x ton/2L1 Where ton = VOUT/VINx (1/fosc) B. L330 L1 = 330 H Choose from: 34042 (Schott) PE-52627 (Pulse Engineering) RL1952 (Renco) 2. Output Capacitor Selection (COUT) 2. Output Capacitor Selection (COUT) A. The TL2575 control loop has a two-pole two-zero frequency A. COUT = 100-F to 470-F, standard aluminum electrolytic response. The dominant pole-zero pair is established by COUT and L1. To meet stability requirements while maintaining an acceptable output ripple voltage (Vripple 0.01 x VOUT), the recommended range for a standard aluminum electrolytic COUT is between 100 F and 470 F. B. COUT should have a voltage rating of at least 1.5 x VOUT. But if a low output ripple voltage is desired, choose capacitors with a higher-voltage ratings than the minimum required, due to their typically lower ESRs. B. Although a COUT rated at 8 V is sufficient for VOUT = 5 V, a higher-voltage capacitor is chosen for its typically lower ESR (and hence lower output ripple voltage) Capacitor voltage rating = 20 V. 3. Catch Diode Selection (D1) (see Table 1) 3. Catch Diode Selection (D1) (see Table 1) A. In normal operation, the catch diode requires a current rating of A. Pick a diode with 3-A rating. at least 1.2 x ILOAD(Max). For the most robust design, D1 should be rated to handle a current equal to the TL2575 maximum switch peak current; this represents the worst-case scenario of a continuous short at VOUT. B. The diode requires a reverse voltage rating of at least 1.25 x VIN(Max). B. Pick 30-V rated Schottky diode (1N5821, MBR330, 31QD03, or SR303) or 100-V rated Fast Recovery diode (31DF1, MURD310, or HER302). 4. Input Capacitor (CIN) An aluminum electrolytic or tantalum capacitor is needed for input bypassing. Locate CIN as close to the VIN and GND pins as possible. 4. Input Capacitor (CIN) CIN = 100 F, 25 V, aluminum electrolytic Submit Documentation Feedback 17 TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS www.ti.com SLVS638B - MAY 2006 - REVISED JANUARY 2007 PROCEDURE (Adjustable Output) EXAMPLE (Adjustable Output) Known: VOUT(Nom) VIN(Max) = Maximum input voltage ILOAD(Max) = Maximum load current Known: VOUT = 10 V VIN(Max) = 25 V ILOAD(Max) = 1 A 1. Programming Output Voltage (Selecting R1 and R2) Referring to Fig. 2, VOUT is defined by: VOUT = VREF 1 + R2 where VREF = 1.23 V R1 1. Programming Output Voltage (Selecting R1 and R2) Select R1 = 1 k R2 = 1 (10/1.23 - 1) = 7.13 k Select R2 = 7.15 k (closest 1% value) ( ( Choose a value for R1 between 1 k and 5 k (use 1% metal-film resistors for best temperature coefficient and stability over time). VOUT -1 R2 = R1 VREF ( ( 2. Inductor Selection (L1) 2. Inductor Selection (L1) A. Calculate the "set" volts-second (E*T) across L1: E*T = (VIN - VOUT) x ton E*T = (VIN - VOUT) x (VOUT/VIN) x {1000/fosc(in kHz)} [V*s] NOTE: Along with ILOAD, the "set" volts-second (E*T) constant establishes the minimum energy storage requirement for the inductor. A. Calculate the "set" volts-second (E*T) across L1: E*T = (25 - 10) x (10/25) x (1000/52) [V*s] E*T = 115 V*s B. Using Figure 19, select the appropriate inductor code based on the intersection of E*T value and ILOAD(Max). B. Using Figure 19, the intersection of 115 V*s and 1 A corresponds to an inductor code of H470. C. From Table 2, choose the appropriate inductor based on the inductor code. Parts from three well-known inductor manufacturers are given. The inductor chosen should be rated for operation at 52-kHz and have a current rating of at least 1.15 x ILOAD(Max) to allow for the ripple current. The actual peak current in L1 (in normal operation) can be calculated as follows: IL1(pk) = ILOAD(Max) + (VIN - VOUT) x ton/2L1 Where ton = VOUT/VIN x (1/fosc) C. H470 L1 = 470 F Choose from: 34048 (Schott) PE-53118 (Pulse Engineering) RL1961 (Renco) 3. Output Capacitor Selection (COUT) 3. Output Capacitor Selection (COUT) A. The TL2575 control loop has a two-pole two-zero frequency response. The dominant pole-zero pair is established by COUT and L1. To meet stability requirements, COUT must meet the following requirement: VIN(Max) (F) COUT 7758 VOUT * L1(H) A.COUT 7785 x 25/(10 x 470) [F] COUT 41.4 F To obtain an acceptable output voltage ripple COUT = 220 F electrolytic However, COUT may need to be several times larger than the calculated value above in order to achieve an acceptable output ripple voltage of ~0.01 x VOUT. B. COUT should have a voltage rating of at least 1.5 x VOUT. But if a low output ripple voltage is desired, choose capacitors with a higher voltage ratings than the minimum required due to their typically lower ESRs. 4. Catch Diode Selection (D1) (see Table 1) 4. Catch Diode Selection (D1) (see Table 1) A. In normal operation, the catch diode requires a current rating of at least 1.2 x ILOAD(Max). For the most robust design, D1 should be rated for a current equal to the TL2575 maximum switch peak current; this represents the worst-case scenario of a continuous short at VOUT. A. Pick a diode with a 3-A rating. B. The diode requires a reverse voltage rating of at least 1.25 x VIN(Max). B. Pick a 40-V rated Schottky diode (1N5822, MBR340, 31QD04, or SR304) or 100-V rated Fast Recovery diode (31DF1, MURD310, or HER302) 5. Input Capacitor (CIN) An aluminum electrolytic or tantalum capacitor is needed for input bypassing. Locate CIN as close to VIN and GND pins as possible. 5. Input Capacitor (CIN) CIN = 100 F, 35 V, aluminum electrolytic 18 Submit Documentation Feedback www.ti.com TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS SLVS638B - MAY 2006 - REVISED JANUARY 2007 Inductor Value Selection Guide for Continuous-Mode Operation Figure 15. TL2575-33 Figure 16. TL2575-50 Figure 17. TL2575-12 Figure 18. TL2575-15 Figure 19. TL2575-ADJ Submit Documentation Feedback 19 TL2575, TL2575HV 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS www.ti.com SLVS638B - MAY 2006 - REVISED JANUARY 2007 Table 1. Diode Selection Guide VR SCHOTTKY FAST RECOVERY 1A 3A 20 V 1N5817 MBR120P SR102 1N5820 MBR320 SR302 30 V 1N5818 MBR130P 11DQ03 SR103 1N5821 MBR330 31DQ03 SR303 40 V 1N5819 MBR140P 11DQ04 SR104 IN5822 MBR340 31DQ04 SR304 50 V MBR150 11DQ05 SR105 MBR350 31DQ05 SR305 60 V MBR160 11DQ06 SR106 MBR360 31DQ06 SR306 1A 3A The following diodes The following diodes are all rated to 100 V: are all rated to 100 V: 11DF1 31DF1 MUR110 MURD310 HER102 HER302 Table 2. Inductor Selection by Manufacturer's Part Number (1) (2) (3) 20 INDUCTOR CODE INDUCTOR VALUE (H) SCHOTT CORPORATION (1) PULSE ENGINEERING (2) RENCO ELECTRONICS (3) L100 100 67127000 PE-92108 RL2444 L150 150 67127010 PE-53113 RL1954 L220 220 67127020 PE-52626 RL1953 L330 330 67127030 PE-52627 RL1952 L470 470 67127040 PE-53114 RL1951 L680 680 67127050 PE-52629 RL1950 H150 150 67127060 PE-53115 RL2445 H220 220 67127070 PE-53116 RL2446 H330 330 67127080 PE-53117 RL2447 H470 470 67127090 PE-53118 RL1961 H680 680 67127100 PE-53119 RL1960 H1000 1000 67127110 PE-53120 RL1959 H1500 1500 67127120 PE-53121 RL1958 H2200 2200 67127130 PE-53122 RL2448 Schott Corporation, (612) 475-1173, 1000 Parkers Lake Rd., Wayzata, MN 55391 Pulse Engineering, (619) 674-8100, P.O. Box 12236, San Diego, CA 92112 Renco Electronics Inc., (516) 586-5566, 60 Jeffryn Blvd. East, Deer Park, NY 11729 Submit Documentation Feedback PACKAGE OPTION ADDENDUM www.ti.com 24-Sep-2010 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Qty Eco Plan (2) Lead/ Ball Finish MSL Peak Temp (3) Samples (Requires Login) TL2575-05IKTTR ACTIVE DDPAK/ TO-263 KTT 5 500 Green (RoHS & no Sb/Br) CU SN Level-3-245C-168 HR Request Free Samples TL2575-05IKTTRG3 ACTIVE DDPAK/ TO-263 KTT 5 500 Green (RoHS & no Sb/Br) CU SN Level-3-245C-168 HR Request Free Samples TL2575-05IKV ACTIVE TO-220 KV 5 50 Pb-Free (RoHS) CU SN N / A for Pkg Type Request Free Samples TL2575-05IN ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPD N / A for Pkg Type Request Free Samples TL2575-05INE4 ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPD N / A for Pkg Type Request Free Samples TL2575-12IKTTR ACTIVE DDPAK/ TO-263 KTT 5 500 Green (RoHS & no Sb/Br) CU SN Level-3-245C-168 HR Request Free Samples TL2575-12IKTTRG3 ACTIVE DDPAK/ TO-263 KTT 5 500 Green (RoHS & no Sb/Br) CU SN Level-3-245C-168 HR Request Free Samples TL2575-12IKV ACTIVE TO-220 KV 5 50 Pb-Free (RoHS) CU SN N / A for Pkg Type Request Free Samples TL2575-12IN ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPD N / A for Pkg Type Request Free Samples TL2575-12INE4 ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPD N / A for Pkg Type Request Free Samples TL2575-15IKTTR ACTIVE DDPAK/ TO-263 KTT 5 500 Green (RoHS & no Sb/Br) CU SN Level-3-245C-168 HR Request Free Samples TL2575-15IKTTRG3 ACTIVE DDPAK/ TO-263 KTT 5 500 Green (RoHS & no Sb/Br) CU SN Level-3-245C-168 HR Request Free Samples TL2575-15IKV ACTIVE TO-220 KV 5 50 Pb-Free (RoHS) CU SN N / A for Pkg Type Request Free Samples TL2575-15IN ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPD N / A for Pkg Type Request Free Samples TL2575-15INE4 ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPD N / A for Pkg Type Request Free Samples TL2575-33IKTTR ACTIVE DDPAK/ TO-263 KTT 5 500 Green (RoHS & no Sb/Br) CU SN Level-3-245C-168 HR Request Free Samples TL2575-33IKTTRG3 ACTIVE DDPAK/ TO-263 KTT 5 500 Green (RoHS & no Sb/Br) CU SN Level-3-245C-168 HR Request Free Samples TL2575-33IKV ACTIVE TO-220 KV 5 50 Pb-Free (RoHS) CU SN N / A for Pkg Type Request Free Samples TL2575-33IN ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPD N / A for Pkg Type Request Free Samples TL2575-33INE4 ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPD N / A for Pkg Type Request Free Samples TL2575-ADJIKTTR ACTIVE DDPAK/ TO-263 KTT 5 500 Green (RoHS & no Sb/Br) CU SN Level-3-245C-168 HR Request Free Samples TL2575-ADJIKTTRG3 ACTIVE DDPAK/ TO-263 KTT 5 500 Green (RoHS & no Sb/Br) CU SN Level-3-245C-168 HR Request Free Samples Addendum-Page 1 PACKAGE OPTION ADDENDUM www.ti.com Orderable Device 24-Sep-2010 Status (1) Package Type Package Drawing Pins Package Qty Eco Plan (2) Lead/ Ball Finish MSL Peak Temp (3) Samples (Requires Login) TL2575-ADJIKV ACTIVE TO-220 KV 5 50 Pb-Free (RoHS) CU SN N / A for Pkg Type Request Free Samples TL2575-ADJIN ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPD N / A for Pkg Type Request Free Samples TL2575-ADJINE4 ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPD N / A for Pkg Type Request Free Samples TL2575HV-05IKTTR ACTIVE DDPAK/ TO-263 KTT 5 500 Green (RoHS & no Sb/Br) CU SN Level-3-245C-168 HR Request Free Samples TL2575HV-05IKTTRG3 ACTIVE DDPAK/ TO-263 KTT 5 500 Green (RoHS & no Sb/Br) CU SN Level-3-245C-168 HR Request Free Samples TL2575HV-05IKV ACTIVE TO-220 KV 5 50 Pb-Free (RoHS) CU SN N / A for Pkg Type Request Free Samples TL2575HV-05IN ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPD N / A for Pkg Type Request Free Samples TL2575HV-05INE4 ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPD N / A for Pkg Type Request Free Samples TL2575HV-12IKTTR ACTIVE DDPAK/ TO-263 KTT 5 500 Green (RoHS & no Sb/Br) CU SN Level-3-245C-168 HR Request Free Samples TL2575HV-12IKTTRG3 ACTIVE DDPAK/ TO-263 KTT 5 500 Green (RoHS & no Sb/Br) CU SN Level-3-245C-168 HR Request Free Samples TL2575HV-12IKV ACTIVE TO-220 KV 5 50 Pb-Free (RoHS) CU SN N / A for Pkg Type Request Free Samples TL2575HV-12IN ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPD N / A for Pkg Type Request Free Samples TL2575HV-12INE4 ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPD N / A for Pkg Type Request Free Samples TL2575HV-15IKTTR ACTIVE DDPAK/ TO-263 KTT 5 500 Green (RoHS & no Sb/Br) CU SN Level-3-245C-168 HR Request Free Samples TL2575HV-15IKTTRG3 ACTIVE DDPAK/ TO-263 KTT 5 500 Green (RoHS & no Sb/Br) CU SN Level-3-245C-168 HR Request Free Samples TL2575HV-15IKV ACTIVE TO-220 KV 5 50 Pb-Free (RoHS) CU SN N / A for Pkg Type Request Free Samples TL2575HV-15IN ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPD N / A for Pkg Type Request Free Samples TL2575HV-15INE4 ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPD N / A for Pkg Type Request Free Samples TL2575HV-33IKTTR ACTIVE DDPAK/ TO-263 KTT 5 500 Green (RoHS & no Sb/Br) CU SN Level-3-245C-168 HR Request Free Samples TL2575HV-33IKTTRG3 ACTIVE DDPAK/ TO-263 KTT 5 500 Green (RoHS & no Sb/Br) CU SN Level-3-245C-168 HR Request Free Samples TL2575HV-33IKV ACTIVE TO-220 KV 5 50 Pb-Free (RoHS) CU SN N / A for Pkg Type Request Free Samples TL2575HV-33IN ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPD N / A for Pkg Type Request Free Samples TL2575HV-33INE4 ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPD N / A for Pkg Type Request Free Samples TL2575HV-ADJIKTTR ACTIVE DDPAK/ TO-263 KTT 5 500 Green (RoHS & no Sb/Br) CU SN Level-3-245C-168 HR Request Free Samples Addendum-Page 2 PACKAGE OPTION ADDENDUM www.ti.com Orderable Device 24-Sep-2010 Status (1) Package Type Package Drawing Pins Package Qty Eco Plan (2) Lead/ Ball Finish MSL Peak Temp (3) Samples (Requires Login) TL2575HV-ADJIKV ACTIVE TO-220 KV 5 50 Pb-Free (RoHS) CU SN N / A for Pkg Type Request Free Samples TL2575HV-ADJIN ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPD N / A for Pkg Type Request Free Samples TL2575HV-ADJINE4 ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPD N / A for Pkg Type Request Free Samples (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 3 PACKAGE MATERIALS INFORMATION www.ti.com 22-Jun-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TL2575-05IKTTR DDPAK/ TO-263 KTT 5 500 330.0 24.4 10.6 15.8 4.9 16.0 24.0 Q2 TL2575-12IKTTR DDPAK/ TO-263 KTT 5 500 330.0 24.4 10.6 15.8 4.9 16.0 24.0 Q2 TL2575-15IKTTR DDPAK/ TO-263 KTT 5 500 330.0 24.4 10.6 15.8 4.9 16.0 24.0 Q2 TL2575-33IKTTR DDPAK/ TO-263 KTT 5 500 330.0 24.4 10.6 15.8 4.9 16.0 24.0 Q2 TL2575-ADJIKTTR DDPAK/ TO-263 KTT 5 500 330.0 24.4 10.6 15.8 4.9 16.0 24.0 Q2 TL2575HV-05IKTTR DDPAK/ TO-263 KTT 5 500 330.0 24.4 10.6 15.8 4.9 16.0 24.0 Q2 TL2575HV-12IKTTR DDPAK/ TO-263 KTT 5 500 330.0 24.4 10.6 15.8 4.9 16.0 24.0 Q2 TL2575HV-15IKTTR DDPAK/ TO-263 KTT 5 500 330.0 24.4 10.6 15.8 4.9 16.0 24.0 Q2 TL2575HV-33IKTTR DDPAK/ TO-263 KTT 5 500 330.0 24.4 10.6 15.8 4.9 16.0 24.0 Q2 TL2575HV-ADJIKTTR DDPAK/ TO-263 KTT 5 500 330.0 24.4 10.6 15.8 4.9 16.0 24.0 Q2 Pack Materials-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 22-Jun-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TL2575-05IKTTR DDPAK/TO-263 KTT 5 500 340.0 340.0 38.0 TL2575-12IKTTR DDPAK/TO-263 KTT 5 500 340.0 340.0 38.0 TL2575-15IKTTR DDPAK/TO-263 KTT 5 500 340.0 340.0 38.0 TL2575-33IKTTR DDPAK/TO-263 KTT 5 500 340.0 340.0 38.0 TL2575-ADJIKTTR DDPAK/TO-263 KTT 5 500 340.0 340.0 38.0 TL2575HV-05IKTTR DDPAK/TO-263 KTT 5 500 340.0 340.0 38.0 TL2575HV-12IKTTR DDPAK/TO-263 KTT 5 500 340.0 340.0 38.0 TL2575HV-15IKTTR DDPAK/TO-263 KTT 5 500 340.0 340.0 38.0 TL2575HV-33IKTTR DDPAK/TO-263 KTT 5 500 340.0 340.0 38.0 TL2575HV-ADJIKTTR DDPAK/TO-263 KTT 5 500 340.0 340.0 38.0 Pack Materials-Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. 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