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| UTC LP2950/2951 LINEAR INTEGRATED CIRCUIT 100 mA LOW-DROPOUT VOLTAGE REGULATOR DESCRIPTION The UTC LP2950/2951 is a monolithic integrated voltage regulator with low dropout voltage, and low quiescent current. It includes many features that suitable for different applications. Available in 3-pin TO-92, DIP-8 and SOP-8 packages. 1 TO-92 SOP-8 FEATURES *High accuracy 2.5, 3.0, 3.3, 3.6 or 5V fixed output for TO-92, SOP-8 package. *Extremely low quiescent current and dropout voltage. *Extremely tight load and line regulation. *Current and thermal limiting. *Very low temperature coefficient. *Logic controlled shutdown and error flag available for DIP and SOP package. *Output voltage programmable for DIP and SOP package. DIP-8 APPLICATIONS *Battery powered equipment. *High efficient linear regulator down to 1.24V. *Cellular phones. ORDERING INFORMATION PART NUMBER UTC LP2950-5.0 UTC LP2950-3.0 UTC LP2950-3.3 UTC LP2950-3.6 UTC LP2950-2.5 UTC LP2950-5.0 UTC LP2950-3.0 UTC LP2950-3.3 UTC LP2951 UTC LP2951 TEMPERATURE RANGE -40 ~ +125C -40 ~ +125C -40 ~ +125C -40 ~ +125C -40 ~ +125C -40 ~ +125C -40 ~ +125C -40 ~ +125C -40 ~ +125C -40 ~ +125C PACKAGE 3-Pin TO-92 plastic 3-Pin TO-92 plastic 3-Pin TO-92 plastic 3-Pin TO-92 plastic 3-Pin TO-92 plastic 8-Pin SOP-8 plastic 8-Pin SOP-8 plastic 8-Pin SOP-8 plastic 8-Pin SOP-8 plastic 8-Pin DIP-8 plastic ACCURACY 2.0% 1.0% 1.0% 2.0% 1.0% 2.0% 1.0% 1.0% 2.0% 2.0% UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R102-001,E UTC LP2950/2951 PIN CONFIGURATIONS LINEAR INTEGRATED CIRCUIT UTC LP2950 1 2 3 OUTPUT GND INPUT TO-92 Plastic Package Bottom View OUTPUT SENSE SHUTDOWN 1 2 8 7 6 5 INPUT FEEDBACK 5V TAP 3 4 UTC LP2951 GND ERROR SOP-8 OR DIP-8 PACKAGE FOR UTC LP2951 OUTPUT NC SHUTDOWN 1 2 8 7 6 5 INPUT NC NC 3 4 UTC LP2950 GND ERROR SOP-8 OR DIP-8 PACKAGE FOR UTC LP2950 Fig.1 UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R102-001,E UTC LP2950/2951 BLOCK DIAGRAM LINEAR INTEGRATED CIRCUIT UNRAGULATED DC FEEDBACK 7 INPUT 8 OUTPUT 1 5V 150mA MAX. SENSE 182k 2 6 1.5 F FROM CMOS OR TTL SHUT DOWN 3 ERROR AMPLIFIER 60mV 5V TAP 330K 60k ERROR DETECTION COMPARATOR ERROR 5 TO CMOS OR TTL 1.23 REF GND 4 FOR UTC LP2951 ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Feedback Voltage Shutdown Voltage Comparator Output Voltage Storage Temperature Operating Junction Temperature SYMBOL Vcc Vfeedback Vshutdown Vco Tstr Tj VALUE -0.3~+18 -1.5~+18 -0.3~+18 -0.3~+18 -65~+150 -40~+125 UNIT V V V V C C UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R102-001,E UTC LP2950/2951 LINEAR INTEGRATED CIRCUIT TYP. 2.5 3.0 3.3 3.6 5.0 2.5 3.0 3.3 3.6 5.0 2.5 3.0 3.3 3.6 5.0 MAX. 2.53 3.03 3.33 3.67 5.10 2.53 3.03 3.33 3.67 5.10 2.53 3.03 3.33 3.67 5.10 100 0.1 0.1 80 450 120 12 170 200 0.2 0.2 150 600 140 14 200 220 430 160 100 ELECTRICAL CHARACTERISTICS (Tested at Tj=25C,VIN=6V,IL=100A and CL=1F, unless otherwise specified) PARAMETER PART NUMBER TEST CONDITION MIN. TJ=25C Output Voltage UTC LP2950-2.5 2.47 UTC LP2950-3.0 2.97 UTC LP2950-3.3 3.27 UTC LP2950-3.6 3.53 UTC LP2950-5.0 4.90 UTC LP2951 (note 1) -25C<=TJ<=<=+85C UTC LP2950-2.5 2.47 UTC LP2950-3.0 2.97 UTC LP2950-3.3 3.27 UTC LP2950-3.6 3.53 UTC LP2950-5.0 4.90 (note 1) UTC LP2951 100A<=IL<=100 mA Output Voltage UTC LP2950-2.5 2.47 Tj<=Tj(max) UTC LP2950-3.0 2.97 UTC LP2950-3.3 3.27 UTC LP2950-3.6 3.53 UTC LP2950-5.0 4.90 (note 1) UTC LP2951 Output Voltage 20 Temperature Coefficient Line Regulation 6V<=VIN<=18V 0.03 100A<=IL<=100 mA Load Regulation 0.04 IL=100A Dropout Voltage 50 IL=100mA (note 2) IL=100A IL=100mA VIN=4.5V,IL=100A Vout=0 CL=1F CL=200F CL=3.3F (Bypass=0.01F pins 7 to (utc2951)) 380 75 8 110 160 UNIT V V V ppm/C % % mV Ground Current Dropout Ground Current Current Limit Output Noise 10Hz to 100KHz A mA A mA V For LP2951 8-Pin version only Reference Voltage Reference Voltage Feedback pin Bias Current Reference Voltage Temperature Coefficient Feedback Bias Current temperature Coefficient 1.22 1.19 1.235 20 50 0.1 1.25 1.27 40 V V nA ppm/C nA/C (Note 4) UTC UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R102-001,E UTC LP2950/2951 PARAMETER Error Comparator Output Leakage Current Output Low Voltage LINEAR INTEGRATED CIRCUIT TEST CONDITION MIN. TYP. MAX. PART NUMBER UNIT VOH=18V VIN=4.5V IOL=400A (Note 3) (Note 3) (Note 3) 15 3.2 1 250 A mV Upper Threshold Voltage Lower Threshold Voltage Hysteresis %VO 7.6 %VO mV Shutdown Input Input Logic Voltage Low(Regulator ON) High(Regulator OFF) Vshutdown=2.4V Vshutdown=18V Vshutdown>=2V,VIN<=18V, Vout=0, Feedback pin tied to 5V Tap. 2.0 30 450 3 50 600 10 A A A 1.3 0.70 V Shutdown Pin Input Current Regulator Output Current Shutdown Note 1: Additional conditions for 8-pin versions are feedback tied to 5V Tap an Output tied to Output Sense (Vout=5V) and Vshutdown<=0.8V. Note 2:Dropout Voltage is defined as the input to output differential at which the output voltage drops 100mV below its nominal value measured at 1V differential. Note 3:Comparator thresholds are expressed in terms of percentage value of voltage output. Note 4:VrefVout(Vin-1V), 2.3VVin30V, 100AIL100mA, TJTJMAX UTC UNISONIC TECHNOLOGIES CO., LTD. 5 QW-R102-001,E UTC LP2950/2951 CURRENT LIMIT SECTION LINEAR INTEGRATED CIRCUIT APPLICATION CIRCUIT (10 Ampere Low Dropout Regulator) +VIN=Vout+0.5V 680 0.05 2N3906 470 UTC D65H0 4.7M 8 +VIN ERROR 5 10k +VOUT 100m A UTC LP2951 3 220 20k SD FB GND 4 7 R1 1% R2 4.7F 100F Vout 1 47 0.033F Vout=1.23V*(1+R1/R2) For 5V output use internal resistors.Wire pin 6 to 7 and wire pin 2 to +Vout Fig.2 Vin UTC UTC UTC UTC UTC LP2950-2.5 LP2950-3.0 LP2950-3.3 LP2950-3.6 LP2950-5.0 Vout Fig.3 UTC UNISONIC TECHNOLOGIES CO., LTD. 6 QW-R102-001,E UTC LP2950/2951 Fig.4 Dropout Characteristics LINEAR INTEGRATED CIRCUIT Fig.5 Input Current 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 01 600 TYPICAL PERFORMANCE CHARACTERISTICS Fig. 6 Dropout Voltage 6 5 4 3 2 1 0 RL=50 500 400 300 IL=100mA INPUT CURRENT(mA) OUTPUT VOLTAGE(V) RL=50k RL=50 DROPOUT VOLTAGE(mV) 100 50 0 IL=100A 0 1 INPUT VOLTAGE(V) 2 3 4 5 6 2 INPUT VOLTAGE(V) 34 56 78 9 10 11 12 -75 -50 -25 0 25 50 75 100 125 150 TEMPERATURE(C)? Fig. 7 Ground Pin Current 8 120 110 7 Fig. 8 Ground Pin Current Fig. 9 Shutdown Threshold Voltage 1.8 1.6 m A) 100 90 Shutdown Threshold Voltage(V) 75 100 125 150 QUIESCENT CURRENT( VIN=6V IL=100A QUIESCENT CURRENT(mA) 6 V IN=6V IL=100mA 1.4 1.2 1.0 0.8 0.6 -75 -50 -25 0 25 50 75 100 125 150 80 70 60 50 -75 -50 -25 0 25 50 75 100 125 150 5 4 -75 -50 -25 0 25 50 TEMPERATURE(C)? TEMPERATURE(C)? TEMPERATURE(C) Fig. 10 Short Circuit Current 500 170 160 150 140 130 120 110 100 -75 -50 -25 0 25 50 75 100 125 150 400 Fig. 11 Dropout Voltage SHORT CIRCUIT CURRENT(mA) 300 Dropout Voltage(mV) 200 100 0 0.1 1 10 100 TEMPERATURE(C)? OUTPUT CURRENT(mA) UTC UNISONIC TECHNOLOGIES CO., LTD. 7 QW-R102-001,E |
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