UNISONIC TECHNOLOGIES CO., LTD LM2954 LINEAR INTEGRATED CIRCUIT 300mA LOW-DROPOUT VOLTAGE REGULATOR DESCRIPTION The UTC LM2954 is a monolithic integrated voltage regulator with low dropout voltage, and low quiescent current. It includes many features that suitable for different applications with TO-92, DIP-8, SOP-8 and SOT-223 packages. FEATURES *High Accuracy Fixed Output. *Output Voltage Programmable and Logic Controlled Shutdown And Error Flag Available for DIP and SOP Package. *Extremely Low Quiescent Current And Dropout Voltage. *Extremely Tight Load And Line Regulation. *Current and Thermal Limiting. *Very low Temperature Coefficient. ORDERING INFORMATION Ordering Number Lead Free Halogen Free LM2954L-xx-AA3-R LM2954G-xx-AA3-R LM2954L-xx-D08-T LM2954G-xx-D08-T LM2954L-xx-S08-R LM2954G-xx-S08-R LM2954L-xx-S08-T LM2954G-xx-S08-T LM2954L-xx-T92-B LM2954G-xx-T92-B LM2954L-xx-T92-K LM2954G-xx-T92-K Note: 1. Pin assignment: I: VIN O: VOUT G: GND 2. xx: Output Voltage www.unisonic.com.tw Copyright © 2012 Unisonic Technologies Co., Ltd Package SOT-223 DIP-8 SOP-8 SOP-8 TO-92 TO-92 Pin assignment 1 2 3 I G O refer to Pin Configurations O O G G I I Packing Tape Reel Tube Tape Reel Tube Tape Box Bulk 1 of 7 QW-R102-002.H LM2954 LINEAR INTEGRATED CIRCUIT MARKING INFORMATION PACKAGE VOLTAGE CODE SOT-223 33:3.3V 50:5.0V 3.3:3.3V 5.0:5.0V TO-92 MARKING UTC LM2954 Voltage Code L: Lead Free G: Halogen Free Data Code 1 3.3:3.3V 5.0:5.0V UTC L: Lead Free G: Halogen Free 2954 Data Code Voltage Code SOP-8/DIP-8 ADJ UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 7 QW-R102-002.H LM2954 LINEAR INTEGRATED CIRCUIT PIN CONFIGURATIONS UTC LM2954 1 2 3 OUTPUT INPUT GND TO-92 Plastic Package Bottom View UTC LM2954 INPUT GND OUTPUT SOT-223 Package OUTPUT 1 8 SENSE 2 7 FEEDBACK 3 6 5V TAP 4 5 ERROR INPUT UTC LM2954 SHUTDOWN GND SOP-8 or DIP-8 Package UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 7 QW-R102-002.H LM2954 LINEAR INTEGRATED CIRCUIT BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 7 QW-R102-002.H LM2954 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL VALUE UNIT Supply Voltage VCC -0.3 ~ +30 V Feedback Voltage VFB -1.5 ~ +30 V Shutdown Voltage VSHDN -0.3 ~ +30 V Comparator Output Voltage VOUT -0.3 ~ +30 V Junction Temperature TJ +125 °C Operating Temperature TOPR -40 ~ +85 °C Storage temperature TSTG -40 ~ +150 °C Note: 1.Absolute maximum ratings are those values beyond which the device which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. 2.The device is guaranteed to meet performance specification within 0°C~+70°C operating temperature range and assured by design from -20°C~+85°C, characteristic and correlation with static process control. ELECTRICAL CHARACTERISTICS(TJ=25°C, VIN=6V, IL=100μA, CL=1μF, unless otherwise specified) PARAMETER LM2954-3.3 Output Voltage LM2954-5.0 Output Voltage Temperature Coefficient Line Regulation Load Regulation Dropout Voltage Ground Current Dropout Ground Current Current Limit Output Noise (10Hz to 100KHz) LM2954-ADJ FOR 8-PIN VERSION ONLY Reference Voltage SYMBOL VOUT TEST CONDITIONS TJ=25°C TCVO △VOUT 6V≦VIN≦30V △VOUT 100μA≦IL≦300mA IL=100mA VD IL=200mA (note 2) IL=100μA IGND IL=200mA ID VIN=4.5V,IL=100μA ILIMIT VOUT=0 CL=1μF eN CL=200μF CL=3.3μF VREF MIN. 3.23 4.90 20 0.1 0.2 380 0.075 8 450 0.12 12 300 1.22 VREF≤VOUT≤(VIN-1V), 2.3V≤VIN≤18V, 100μA≤IL≤100mA, TJ≤TJMAX TYP. 3.3 5.0 1.235 1.25 V 1.27 V 40 nA Reference Voltage VREF Feedback Pin Bias Current Reference Voltage Temperature Coefficient Feedback Bias Current Temperature Coefficient IB(FB) 20 TCVREF 50 ppm/°C TCIO 0.1 nA/°C UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 1.19 MAX. UNIT 3.37 V 5.10 100 ppm/°C 0.2 % 0.5 400 mV 600 0.23 mA 14 230 μA mA 430 μV 160 100 5 of 7 QW-R102-002.H LM2954 LINEAR INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS(Cont.) PARAMETER ERROR COMPARATOR Output Leakage Current Output Low Voltage Upper Threshold Voltage Lower Threshold Voltage Hysteresis SHUTDOWN INPUT SYMBOL IO(LEAK) VOL VTHD(UP) VTHD(LOW) VHYS TEST CONDITIONS VOH=30V VIN=4.5V, IOL=400μA (Note 3) (Note 3) (Note 3) MIN. TYP. MAX. UNIT 1 250 μA mV %VOUT %VOUT mV 3.2 7.6 15 Low (Regulator ON) 1.3 0.70 High (Regulator OFF) 2.0 30 50 VSHDN=2.4V Shutdown Pin Input Current II(SHDN) VSHDN=30V 450 600 VSHDN≧2V,VIN≦30V, VOUT=0, Regulator Output Current Shutdown IO(SHDN) 3 10 Feedback pin tied to 5V Tap. Note 1: Additional conditions for 8-pin versions are feedback tied to 5V Tap an Output tied to Output Sense (VOUT=5V) and VSHDN≦0.8V. Note 2: Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV its nominal value measured at 1V differential. Note 3: Comparator thresholds are expressed in terms of percentage value of voltage output. Input Logic Voltage VI(LOG) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw V μA μA μA below 6 of 7 QW-R102-002.H LM2954 LINEAR INTEGRATED CIRCUIT APPLICATION CIRCUIT (10A Low Dropout Regulator) For 8 Pins CURRENT LIMIT SECTION +VIN=VOUT+0.5V 0.05Ω 680Ω 2N3906 UTC D65H0 470Ω 8 +VIN 4.7MΩ ERROR 5 UTC LM2954 3 20kΩ 220Ω SD GND 4 FB +VOUT 10 A 10kΩ R1 7 VOUT 1 100μF 1% 4.7μF R2 47Ω 0.033μF VOUT=1.23V*(1+R1/R2) For 5V output use internal resistors.Wire pin 6 to 7 and wire pin 2 to +VOUT For 3 Pins UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 of 7 QW-R102-002.H