GS1117 Vishay Siliconix 1A Low Dropout Positive Adjustable Regulator SOT-223 TO-252 (DPak) 1 2 2 TO-263AB (D2Pak) TO-220AB 3 3 3 1 2 1 3 2 GS1117CST GS1117CE GS1117CT Pin Definition 1 GS1117CM Description 1. Adjust/Gnd. 2. Vout (tab) 3. Vin The GS1117 is a low dropout three terminal regulator with 1A output current capability. The output voltage is adjustable with the use of a resistor divider. For fixed output voltage versions, the output voltage is internally set at 1.8V, 2.5V, 2.85V, 3.3V or 5V. Dropout is guaranteed at a maximum of 1.3V at maximum output current. Its low dropout voltage and fast transient response make it ideal for low voltage microprocessor applications. Internal thermal limiting provides protection against any overload condition that would create excessive junction temperatures. Features * Dropout Voltage 1.1V at 1A Output Current * Fast Transient Response * Line Regulation typically at 0.04% * Load Regulation typically at 0.1% Applications * Internal thermal limiting * Adjustable Output Voltage or Fixed 1.8V, 2.5V, 2.85V, 3.3V, 5V * SCSI-2 Active Terminator * Standard 3-Pin Power Packages * Battery Chargers * Post Regulator for Switching Supply * Constant-Current Regulators * PC Add-On Card Functional Block Diagram VIN VREF 1.25V + + GM -- Case: TO-220AB, TO-263AB (D2PAK), TO-252 (DPAK) and SOT-223 Current Amp High temperature soldering guaranteed: Thermal Limit 50A Mechanical Data 260C/10 seconds at terminals Current Limit For fixed voltage device ADJ Document Number 74802 04-Feb-05 VOUT Case outlines are on the back page GND www.vishay.com 1 GS1117 Vishay Siliconix Maximum Ratings and Thermal Characteristics Parameter Vin Pin to ADJ/GND Pin (TA = 25 C unless otherwise noted) Symbol Value Unit Vin 7 V Thermal Resistance - Junction to Case TO-220AB TO-252 TO-263AB SOT-223 Operating Junction Temperature Range Storage Temperature Range Electrical Characteristics Parameter VO Reference Voltage (1) Adj Voltage VREF Line Regulation(1) Load Regulation TJ -20 to +125 C Tstg -65 to 150 C Test Conditions VIN 5V REG(LOAD) IO Test Limits TJ 10 mA Min Typ Max 0.99 VN VN 1.01 VN 0C TJ 125C 0.97 VN 5V 10 mA 1.238 0 C TJ 125 C REG(LINE) (1) 10 mA 5V 1.225 0C TJ 125C 0C TJ 125C 1A Dropout Voltage Vout = 1% 500mA VDROP 0C TJ 125C 100mA Current Limit ICL 5V Quiescent Current Fixed Model IQ 5V Temperature Coefficient TC 5V Adjust Pin Current Adjust Pin Current Change C/W TJ = 25 C , Io = 10 mA - 1 A, VIN = 4.75V - 7V, unless otherwise noted. Symbol Output Voltage (1) Fixed Voltage 3.0 8.0 3.0 15.0 RJC 1.0 1.03 VN 1.250 0C TJ 125C V 1.275 0.03 0.3 0.035 0.35 0.1 0.3 0.2 0.5 1.15 1.3 1.05 1.15 1.0 1.1 1.1 12 0.5 A 1.262 Unit %/VO V A 14 0.005 mA %VO / C IADJ 55 120 IADJ 0.2 5 14 A Minimum Load Current Adjustable Version IO 5V 5 RMS Output Noise (2) VN 5V 0.003 %VO RR 5V 72 dB Ripple Rejection Ratio (3) 10 mA 0C TJ 125C 60 mA Notes: (1) Low duty cycle pulse testing with Kelvin connections required.. (2) Bandwidth of 10 HZ to 10 KHZ. (3) 120 HZ input ripple (CADJ for ADJ) = 25 F. www.vishay.com 2 Document Number 74802 04-Feb-05 GS1117 Vishay Siliconix Typical Application Circuit VIN 5V C1 10F 3 2 VOUT GS1117-xx + 1 Fixed Voltage Regulator + VIN 5V 3 GS1117 1 ADJ C2 10F C1 10F VOUT 3.3V 2 VREF R1 125 1% + + R2 205 1% C2 10F Adjustable Voltage Regulator Notes: VREF = VOUT - VADJ = 1.25V (typ.) VOUT = VREF x (1+R2/R1) + IADJ x R2 IADJ = 50A (typ.) (1) C1 needed if device is far away from filter capacitors (2) C2 required for stability Document Number 74802 04-Feb-05 www.vishay.com 3 GS1117 Vishay Siliconix Ratings and Characteristic Curves (TA = 25C unless otherwise noted) Fig. 2 - Dropout Voltage v.s. Temperature Fig. 1 - Dropout Voltage 1.3 IOUT = 1 A 1.2 TJ = 0 C 1.0 TJ = 50 C 0.8 TJ = 125 C 0.6 0.4 1.2 Dropout Voltage (V) Minimum Differential Voltage (V) 1.4 0.2 1.1 1.0 0.9 0.8 0.0 0 200 400 600 800 0 1000 20 40 Fig. 3 - Minimum Load Current (Adjustable Version) 100 120 140 Fig. 4 - Adjust Pin Current 10 100 Adjust Pin Current (A) 8 TJ = 125C 6 TJ = 25C 4 TJ = 0C 2 0 1 2 3 4 5 80 60 40 20 0 --50 6 --25 0 25 50 75 100 Input / Output Differential Voltage (V) Temperature (C) Fig. 5 - Temperature Stability Fig. 6 - Ripple Rejection (with Cadj 25F) 125 80 1.2 IOUT = 0.5A COUT = 25F 0.9 70 Ripple Rejection (dB) Output Voltage Deviation (%) 80 Ambient Temperature (C) Output Current (mA) Minimum Operating Current (mA) 60 0.6 0.3 0.0 --0.3 --0.6 COUT = 10F 60 COUT = 25F 50 40 30 COUT = 10F --0.9 20 --1.2 --20 0 20 40 60 80 Temperature (C) www.vishay.com 4 100 120 140 10 100 1K 10K 100K 1M Frequency (Hz) Document Number 74802 04-Feb-05 GS1117 Vishay Siliconix Ratings and Characteristic Curves (TA = 25C unless otherwise noted) Fig. 8 - Line Transient Response Fig. 7 - Load Transient Response Output Voltage (mV, AC) 0.05 0 VIN = 5V CIN = 1F COUT = 10F (Tantalum) VOUT = 3.3V --0.05 --0.1 Input Voltage (V) Load Current Output Voltage (V, AC) 0.1 0.4A 0.1A 0 40 80 120 160 50 0 --50 COUT = 10F (Tantalum) VOUT = 3.3V --100 7.0 6.0 0 200 10 20 30 40 50 Time (s) Time (s) Ordering Information Part Number GS1117CST/2F-E3 Output Voltage (V) GS1117CST-18/2F-E3 1.8 GS1117CST-25/2F-E3 2.5 GS1117CST-28/2F-E3 2.85 GS1117CST-33/2F-E3 3.3 GS1117CST-5/2F-E3 GS1117CE/27H Package Adjustable SOT-223 5.0 Adjustable GS1117CE-1.8/27H 1.8 GS1117CE-2.5/27H 2.5 TO-252 GS1117CE-2.85/27H 2.85 DPAK GS1117CE-3.3/27H 3.3 GS1117CE-5/27H GS1117CM/31F-E3 5.0 Adjustable GS1117CM-18/31F-E3 1.8 GS1117CM-25/31F-E3 2.5 TO-263 GS1117CM-28/31F-E3 2.85 DPAK GS1117CM-33/31F-E3 3.3 GS1117CM-5/31F-E3 GS1117CT/45H 5.0 Adjustable GS1117CT-1.8/45H 1.8 GS1117CT-2.5/45H 2.5 GS1117CT-2.85/45H 2.85 GS1117CT-3.3/45H 3.3 GS1117CT-5/45H 5.0 Document Number 74802 04-Feb-05 TO-220 www.vishay.com 5 GS1117 Vishay Siliconix Case Outlines SOT-223 TO-252 (DPAK) 6.73 6.35 6.80 6.30 3.15 2.90 7.30 6.70 5.59 5.33 2 1 1 2 0.58 0.46 5.46 5.21 Top View 3.70 3.30 2.38 2.19 10.42 9.40 3 3 0.80 0.60 0.88 0.64 0.51 (min.) 1.80 Max. 0.12 0.02 2.28 (TYP.) 0.91 Min. 2.30 Typ. 13 3 1.27 1.02 0.35 0.24 Dimensions in millimeters TO-263-3L TO-220 4.83 4.06 10.29 10.66 9.66 1.40 1.12 9.65 3.42 2.54 1.40 (max.) 15.88 0.99 1.39 1.39 0.51 6.85 5.85 9.65 16.51 14.23 8.28 14.60 2.54 (typ.) 4.82 3.56 4.08 3.54 0.74 (max.) 6.35 Max. 0.51 14.73 12.70 1.15 0 ~ 8 2.79 (max.) www.vishay.com 6 0.25 (typ.) 2.79 2.29 1.77 1.15 1.01 (with plating) 0.38 (with plating) 1.14 0.31 2.92 2.04 Document Number 74802 04-Feb-05