DA9123.007 3 May 2004 MAS9123 80 mA LDO Voltage Regulator IC * * * * Very Low Noise: 9.5 Vrms Very Short Start-up Time: 20 s Excellent Ripple Rejection: 68 dB Stable with Low-ESR Output Capacitors * Low Minimum Output Capacitance Requirement: 0.23 F * Regulator Enable/Disable Control DESCRIPTION MAS9123 is a low dropout voltage regulator with an enable/disable pin, which allows device to be turned off or on by pulling control to low or high. Due to the very low noise level of only 9.5 Vrms MAS9123 is highly suitable for very sensitive circuits, e.g., in portable applications. In addition to the noise level, MAS9123 excels in dropout voltage (95 mV typical at 50 mA) and in start-up time (with bypass capacitor typically 20 s from start-up to within 1% of VOUT(NOM)). Also its ripple rejection ability of 68 dB at 10 kHz exceed that of competition. The Equivalent Series Resistance (ESR) range of output capacitors that can be used with MAS9123 is very wide. This ESR range from a few m up to a couple of Ohms combined with no minimum output current requirement makes the usage of MAS9123 easier and low in cost. Also the minimum output capacitance requirement is very low. This combined with very short start-up time makes it possible to switch the regulator off and on even in timing critical and/or noise sensitive applications. MAS9123 also includes an auto-discharge function, wherein a shutdown transistor turns on and discharges the output capacitor, when MAS9123 is turned off. An internal thermal protection circuit prevents the device from overheating. Also the maximum output current is internally limited. In order to save power the device goes into sleep mode when the regulator is disabled. FEATURES APPLICATIONS * Optimized for Fast Start-up * Very Low Noise * Internal Thermal Shutdown * Short Circuit Protection * Functionally and Pin Compatible with LP2982/LP2985/LP3985 * Small SOT23-5 or tiny WL-CSP Package * Output Voltage Options: 2.8, 3.0 and 3.3 V, see Ordering Information p. 12 * RF Oscillators * GPS Systems * RF Section of Wireless Systems * RF Section of Cellular Phones * Oven Oscillators * RF Section of Cordless Phones * Battery Powered Systems * Portable Systems * Radio Control Systems 1 (12) DA9123.007 3 May 2004 PIN CONFIGURATION SOT23-5 Top View VOUT BYPASS 5 4 23AX 1 2 3 VIN GND CTRL For top marking information see ordering information p. 12 WL-CSP A1 C1 B2 B2 C3 C3 C1 Pin A1 Designator A3 A3 TOP VIEW 23XY BOTTOM VIEW A1 For top marking information see ordering information p. 12 PIN DESCRIPTION Pin Name VIN GND CTRL BYPASS VOUT Pin Number in SOT23-5 1 2 3 4 5 Pin Number in WL-CSP Pin Order 12 Pin Order 11 Note 1 Note 2 C3 B2 A1 A3 C1 C3 A1 A3 B2 C1 Type P G I I O Function Power Supply Voltage Ground Enable/Disable Pin for Regulator Pin for Bypass Capacitor Output G = Ground, I = Input, O = Output, P = Power Note 1: WL-CSP Pin Order 11 is pin compatible with LP3985. Note 2: WL-CSP Pin Order 12 is pin compatible with LP2985. 2 (12) DA9123.007 3 May 2004 BLOCK DIAGRAM VIN OVER CURRENT / CTRL OVER TEMPERATURE PROTECTION VOLTAGE REFERENCE + VOUT GND BYPASS ABSOLUTE MAXIMUM RATINGS All voltages with respect to ground. Parameter Supply Voltage Voltage Range for All Pins ESD Rating Junction Temperature Storage Temperature Symbol Conditions VIN Min Max Unit -0.3 -0.3 6 VIN + 0.3 2 +175 V V kV C HBM TJmax (limited) TS -55 +150 C Stresses beyond those listed may cause permanent damage to the device. The device may not operate under these conditions, but it will not be destroyed. RECOMMENDED OPERATING CONDITIONS Parameter Operating Junction Temperature Operating Ambient Temperature Operating Supply Voltage Symbol Conditions Min Max Unit TJ -40 +125 C TA -40 +85 C VIN 2.5 5.3 V 3 (12) DA9123.007 3 May 2004 ELECTRICAL CHARACTERISTICS Thermal Protection TA = -40C to +85C, typical values at TA = +27C, VIN = VOUT(NOM) + 1.0 V, IOUT = 1.0 mA, CIN = 1.0 F, CL = 1.0 F, CBYPASS = 10 nF, VCTRL = 2.0 V, unless otherwise specified. Parameter Symbol Conditions Min Typ Max Unit Threshold High TH 145 160 175 C Threshold Low TL 135 150 165 C The hysteresis of 10C prevents the device from turning on too soon after thermal shut-down. Control Terminal Specifications TA = -40C to +85C, typical values at TA = +27C, VIN = VOUT(NOM) + 1.0 V, IOUT = 1.0 mA, CIN = 1.0 F, CL = 1.0 F, CBYPASS = 10 nF, VCTRL = 2.0 V, unless otherwise specified. Parameter Control Voltage OFF State ON State Control Current Symbol Conditions Min VCTRL ICTRL Typ Max Unit V -0.3 1.6 0.55 VIN + 0.3 A VCTRL = VIN VCTRL = 0 V 5 0 15 If CTRL-pin is not connected, MAS9123 is in OFF state (900 k pull-down resistor to ground). Voltage Parameters TA = -40C to +85C, typical values at TA = +27C, VIN = VOUT(NOM) + 1.0 V, IOUT = 1.0 mA, CIN = 1.0 F, CL = 1.0 F, CBYPASS = 10 nF, VCTRL = 2.0 V, unless otherwise specified. Parameter Output Voltage Tolerance Dropout Voltage Symbol VOUT VDROP Conditions Min IOUT = 0 mA IOUT = 50 mA VOUT(NOM) - 0.05 VOUT(NOM) - 0.10 Typ Max Unit V VOUT(NOM) + 0.05 VOUT(NOM) + 0.05 mV 46 51 95 IOUT = 1 mA IOUT = 10 mA IOUT = 50 mA Current Parameters TA = -40C to +85C, typical values at TA = +27C, VIN = VOUT(NOM) + 1.0 V, IOUT = 1.0 mA, CIN = 1.0 F, CL = 1.0 F, CBYPASS = 10 nF, VCTRL = 2.0 V, unless otherwise specified. Parameter Symbol Conditions Min Typ Unit 80 mA Continuous Output Current IOUT Short Circuit Current IMAX RL = 0 230 mA Peak Output Current IPK VOUT > 95% * VOUT(NOM) 180 mA Ground Pin Current IGND Ground Pin Current, Sleep mode IGND 0 Max A IOUT = 0 mA IOUT = 10 mA IOUT = 50 mA VCTRL = 0 V TA = 27C 170 210 250 0.02 0.5 TA = 85C 0.2 2 A 4 (12) DA9123.007 3 May 2004 Power Dissipation TA = -40C to +85C, typical values at TA = +27C, VIN = VOUT(NOM) + 1.0 V, IOUT = 1.0 mA, CIN = 1.0 F, CL = 1.0 F, CBYPASS = 10 nF, VCTRL = 2.0 V, unless otherwise specified. Parameter Thermal Resistance (Junction-to-Air) Maximum Power Dissipation Symbol Conditions RJA thermal test board according to JESD51-7 (4 layers), SOT23-5 package mounted on MAS9123 CSP evaluation board, WL-CSP package any ambient temperature Pd Min Typ Max 191 Unit C/W 210 Pd MAX = TJ (MAX) - TA W R JA Note 1 Note 1: TJ(MAX) denotes maximum operating junction temperature (+125C), TA ambient temperature, and RJA junction-to-air thermal resistance specified above. Line and Load Regulation TA = -40C to +85C, typical values at TA = +27C, VIN = VOUT(NOM) + 1.0 V, IOUT = 1.0 mA, CIN = 1.0 F, CL = 1.0 F, CBYPASS = 10 nF, VCTRL = 2.0 V, unless otherwise specified. Parameter Symbol Conditions Line Regulation Min VOUT(NOM) + 1 V < VIN < 5.3 V, IOUT = 50 mA IOUT = 1.0 to 50 mA Load Regulation Typ Max Unit 0.75 2 mV 13.5 25 mV Noise and Ripple Rejection TA = -40C to +85C, typical values at TA = +27C, VIN = VOUT(NOM) + 1.0 V, IOUT = 1.0 mA, CIN = 1.0 F, CL = 1.0 F, CBYPASS = 10 nF, VCTRL = 2.0 V, unless otherwise specified. Parameter Output Noise Voltage Noise Density Symbol Conditions VRMS 10 Hz < f < 100 kHz 9.5 Vrms VN IOUT = 50 mA, f = 10 kHz f = 1 kHz f = 10 kHz f = 100 kHz 24 nV PSRR Min Typ Max 70 68 58 Unit Hz dB Dynamic Parameters TA = -40C to +85C, typical values at TA = +27C, VIN = VOUT(NOM) + 1.0 V, IOUT = 1.0 mA, CIN = 1.0 F, CL = 1.0 F, CBYPASS = 10 nF, VCTRL = 2.0 V, unless otherwise specified. Parameter Symbol Start-up Delay (from start-up to 80% of VOUT(NOM)) Overshoot Start-up Time (settling time of voltage transient from start-up to within 1% of VOUT(NOM)) Conditions VCTRL = 0 to 2.4 V, IOUT = 50 mA, CL 1.0 F VCTRL = 0 to 2.4 V VCTRL = 0 to 2.4 V, IOUT = 50 mA CL 1.0 F Typ Max Unit 7.5 1.0 8.0 s % 20 s Figure1. Definitions of start-up delay, overshoot and start-up time. 50% CTRL overshoot Min 80% VOUT 5 (12) start-up delay start-up time DA9123.007 3 May 2004 TYPICAL PERFORMANCE CHARACTERISTICS TA = +27C, VIN = VOUT(NOM) + 1.0 V, IOUT = 50 mA, CIN = 1.0 F, CL = 1.0 F, CBYPASS = 10 nF, VCTRL = 2.0 V, unless otherwise specified. Start-up settling Typically 20 s after the start-up the output voltage drops about 10 to 20 mV in 250 s time (figure 4). The value of this voltage drop depends on the parasitic components of the bypass capacitor. After the voltage drop the output voltage rises slowly to the final value (figure 5). Noise reduction MAS9123 has typically 9.5 VRMS output noise voltage with 10 nF bypass capacitor. By increasing the capacitance value, the output noise will slightly decrease, but the start-up time increases. MAS9123 Start-up 2.82 3 Output voltage (V) 2.5 1.5 1 0.5 0 2.81 7 2.8 6 2.79 5 2.78 4 2.77 3 2.76 2 2.75 1 2.74 0 Time (5 s/div) Time (2 s/div) Vout CTRL Vout Figure 2. Typical start-up. CTRL Figure 3. Typical start-up. MAS9123 Start-up settling MAS9123 Start-up settling 2.82 2.81 7 2.81 7 2.8 6 2.8 6 2.79 5 2.79 5 2.78 4 2.78 4 2.77 3 2.77 3 2.76 2 2.76 2 2.75 1 2.75 1 0 2.74 2.74 Time (200 s/div) Vout Figure 4. Typical start-up settling. CTRL Output voltage (V) 8 Control voltage (V) Output voltage (V) 2.82 8 8 Control voltage (V) Voltage (V) 2 MAS9123 Start-up Control voltage (V) Start-up MAS9123 start-up is optimized for bypass capacitor values of 3 to 20 nF. When values are lower than 3 nF the start-up settling might be unstable for about 20 s after the start-up. The rise time increases if bypass capacitor values are bigger than 20 nF. 0 Time (1 ms/div) Vout CTRL Figure 5. Typical start-up settling. 6 (12) DA9123.007 3 May 2004 TYPICAL PERFORMANCE CHARACTERISTICS TA = +27C, VIN = VOUT(NOM) + 1.0 V, IOUT = 50 mA, CIN = 1.0 F, CL = 1.0 F, CBYPASS = 10 nF, VCTRL = 2.0 V, unless otherwise specified. MAS9123 Load regulation transient, CL = 1 F, VOUT = 2.8 V 15 15 10 Output voltage change (mV) 10 Output voltage change (mV) MAS9123 Load regulation transient, CL = 470 nF, VOUT = 2.8 V 5 0 -5 -10 -15 -20 -25 -30 5 0 -5 -10 -15 -20 -25 -30 Time (200 s/div) Figure 6. Typical load regulation IOUT = 0.5 mA ... 50 mA in 2 s. CL = 1 F, MAS9123 Line transient response, V OUT = 2.8 V MAS9123 PSRR vs. frequency 75 70 7.8 0 6.8 -0.4 5.8 -0.8 4.8 -1.2 3.8 65 PSRR (dB) 0.4 Figure 7. Typical load regulation transient. CL = 470 nF, IOUT = 0.5 mA ... 50 mA in 2 s. 8.8 Supply voltage (V) OutputOutput voltagevoltage change (mV) 0.8 transient. Time (200 s/div) 60 55 50 45 40 0.1 1 10 Time (10 s/div) Vout Cload = 1 F Vin Figure 8. Line transient response. CL = 1 F, IOUT = 10 mA. 1000 Cload = 470 nF Figure 9. PSRR vs. frequency. MAS9123 Noise spectral density MAS9123 Dropout voltage vs. load current 200 350 300 Dropout voltage (mV) 1/2 Noise spectral density density (nV/Hz (nV/ Hz) ) 100 Frequency (kHz) 250 200 150 100 50 150 100 50 0 0 0 0.1 1 10 Frequency (kHz) Figure 10. Noise spectral density vs. frequency. 100 10 20 30 40 50 60 70 80 Load current (mA) T = +27C T = -40C T = +85C Figure 11. Dropout voltage vs. load current. 7 (12) DA9123.007 3 May 2004 APPLICATION INFORMATION CTRL 3 OVER CURRENT / VIN 1 OVER TEMPERATURE PROTECTION VOLTAGE REFERENCE + 5 VOUT CL 4 BYPASS Parameter Output Capacitance CIN 2 CBYPASS GND Symbol Min Typ CL 0.23 1.0 Max Unit Auto-Discharge Function MAS9123 has a shutdown transistor that turns on, when the device is disabled, and discharges the output capacitor. Note F 1. Ceramic and film capacitors can be used. 2. The value of CL should be smaller than or equal to the value of CIN. Effective Series ESR 0.01 2 1. When within this range stable Resistance with all IOUT = 0 mA...80 mA values. Bypass Capacitance CBYPASS 3 10 nF 1. Ceramic and film capacitors are best suited. For maximum output voltage accuracy DC leakage current through capacitor should be kept as low as possible. In any case DC leakage current must be below 100 nA. Input Capacitance CIN 0.5 F 1. A big enough input capacitance is needed to prevent possible impedance interactions between the supply and MAS9123. 2. Ceramic, tantalum, and film capacitors can be used. If a tantalum capacitor is used, it should be checked that the surge current rating is sufficient for the application. 3. In the case that the inductance between a battery and MAS9123 is very small (< 0.1 H), a 0.47 F input capacitor is sufficient. 4. The value of CIN should not be smaller than the value of CL. Values given on the table are minimum requirements unless otherwise specified. When selecting capacitors, tolerance and temperature coefficient must be considered to make sure that the requirement is met in all potential operating conditions. 8 (12) DA9123.007 3 May 2004 PACKAGE (SOT23-5) OUTLINE b 0.20 e CL DATUM 'A' CL E CL 2 L E1 e1 D CL A 0 - 10 degrees A2 A1 NOTE: 1. ALL DIMENSIONS ARE IN MILLIMETERS 2. FOOT LENGHT MEASURED AT INTERCEPT POINT BETWEEN DATUM A & LEAD SURFACE. 3. PACKAGE OUTLINE EXCLUSIVE OF MOLD FLASH & METAL BURR 4. PACKAGE OUTLINE INCLUSIVE OF SOLDER PLATING. 5. COMPLY TO EIAJ SC74 Symbol Min Max Unit A A1 A2 b C D E E1 L e e1 0.90 0.00 0.90 0.25 0.09 2.80 2.60 1.50 0.35 1.45 0.15 1.30 0.50 0.20 3.10 3.00 1.75 0.55 mm mm mm mm mm mm mm mm mm mm mm 0.95ref 1.90ref 9 (12) DA9123.007 3 May 2004 PACKAGE (WL-CSP) OUTLINE All dimensions in microns, drawings not to scale. 1400 (-50 +0) BOTTOM VIEW BACKSIDE MARKING Pin A1 designator 200 20 500 5 890 (-50 +0) 23XY 500 5 100-150 Coplanarity across chipsite (die) 10 480 25 Definitions (see ordering information p. 12): X = Package option Y = Output voltage option 10 (12) DA9123.007 3 May 2004 SOLDERING INFORMATION Resistance to Soldering Heat Maximum Temperature Maximum Number of Reflow Cycles Reflow profile According to RSH test IEC 68-2-58/20 2*220C 240C 3 Thermal profile parameters stated in JESD22-A113 should not be exceeded. http://www.jedec.org max 0.08 mm Solder plate 7.62 - 25.4 m, material Sn 85% Pb 15% Material Sn 63% Pb 37% (eutectic) Seating Plane Co-planarity Lead Finish WL-CSP Balls TAPE & REEL SPECIFICATIONS (SOT23-5) W3 W2 A D Feeding Direction 8 mm N C W1 B 4 mm Other Dimensions according to EIA-481 Standard. 3000 Components on Each Reel. Dimension A B C D N W1 (measured at hub) W2 (measured at hub) Trailer Leader Min 1.5 12.80 20.2 50 8.4 160 390, of which minimum 160 mm of empty carrier tape sealed with cover tape Max Unit 178 mm mm mm mm mm mm mm mm mm 13.50 9.9 14.4 11 (12) DA9123.007 3 May 2004 ORDERING INFORMATION Product Code Product Top Marking Package Pin Order Comments MAS9123AST2-T MAS9123A2CA11 MAS9123A2CA12 2.8 V Voltage Regulator IC 2.8 V Voltage Regulator IC 2.8 V Voltage Regulator IC 23A2 23A2 23Z2 SOT23-5 WL-CSP WL-CSP 11 12 Tape and Reel Tape and Reel Tape and Reel MAS9123AST6-T MAS9123A6CA11 MAS9123A6CA12 3.0 V Voltage Regulator IC 3.0 V Voltage Regulator IC 3.0 V Voltage Regulator IC 23A6 23A6 23Z6 SOT23-5 WL-CSP WL-CSP 11 12 Tape and Reel Tape and Reel Tape and Reel MAS9123AST1-T MAS9123A1CA11 MAS9123A1CA12 3.3 V Voltage Regulator IC 3.3 V Voltage Regulator IC 3.3 V Voltage Regulator IC 23A1 23A1 23Z2 SOT23-5 WL-CSP WL-CSP 11 12 Tape and Reel Tape and Reel Tape and Reel For more voltage options contact Micro Analog Systems Oy. LOCAL DISTRIBUTOR MICRO ANALOG SYSTEMS OY CONTACTS Micro Analog Systems Oy Kamreerintie 2, P.O.Box 51 FIN-02771 Espoo, FINLAND http://www.mas-oy.com Tel. (09) 80 521 Tel. Int. +358 9 80 521 Telefax +358 9 805 3213 E-mail: info@mas-oy.com NOTICE Micro Analog Systems Oy reserves the right to make changes to the products contained in this data sheet in order to improve the design or performance and to supply the best possible products. Micro Analog Systems Oy assumes no responsibility for the use of any circuits shown in this data sheet, conveys no license under any patent or other rights unless otherwise specified in this data sheet, and makes no claim that the circuits are free from patent infringement. Applications for any devices shown in this data sheet are for illustration only and Micro Analog Systems Oy makes no claim or warranty that such applications will be suitable for the use specified without further testing or modification. 12 (12)