UTC LP2950/2951 LINEAR INTEGRATED CIRCUIT 100 mA LOW-DROPOUT VOLTAGE REGULATOR 1 DESCRIPTION TO-92 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. SOP-8 FEATURES DIP-8 *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. 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 UTC TEMPERATURE RANGE -40 ~ +125°C -40 ~ +125°C -40 ~ +125°C -40 ~ +125°C -40 ~ +125°C -40 ~ +125°C -40 ~ +125°C -40 ~ +125°C -40 ~ +125°C -40 ~ +125°C PACKAGE ACCURACY 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 2.0% 1.0% 1.0% 2.0% 1.0% 2.0% 1.0% 1.0% 2.0% 2.0% UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R102-001,E UTC LP2950/2951 LINEAR INTEGRATED CIRCUIT PIN CONFIGURATIONS UTC LP2950 1 2 3 OUTPUT INPUT GND TO-92 Plastic Package Bottom View OUTPUT 1 SENSE 2 SHUTDOWN 3 GND UTC LP2951 4 8 INPUT 7 FEEDBACK 6 5V TAP 5 ERROR SOP-8 OR DIP-8 PACKAGE FOR UTC LP2951 OUTPUT 1 NC 2 SHUTDOWN 3 GND 4 8 UTC LP2950 INPUT 7 NC 6 NC 5 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 LINEAR INTEGRATED CIRCUIT BLOCK DIAGRAM FEEDBACK UNRAGULATED DC INPUT 7 8 OUTPUT 5V 150mA MAX. 1 SENSE FROM CMOS OR TTL SHUT DOWN 3 ERROR AMPLIFIER 60mV 182kΩ 60kΩ ERROR DETECTION COMPARATOR 1.23 REF 5V TAP 2 6 330KΩ 1.5 µF ERROR 5 TO CMOS OR TTL GND 4 FOR UTC LP2951 ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Feedback Voltage Shutdown Voltage Comparator Output Voltage Storage Temperature Operating Junction Temperature UTC 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 UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R102-001,E UTC LP2950/2951 LINEAR INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS (Tested at Tj=25°C,VIN=6V,IL=100µA and CL=1µF, unless otherwise specified) PARAMETER PART NUMBER TEST CONDITION MIN. TJ=25°C 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) -25°C<=TJ<=<=+85°C 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 100µA<=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 100µA<=IL<=100 mA Load Regulation 0.04 IL=100µA Dropout Voltage 50 TYP. 2.5 3.0 3.3 3.6 5.0 MAX. 2.53 3.03 3.33 3.67 5.10 UNIT 2.5 3.0 3.3 3.6 5.0 2.53 3.03 3.33 3.67 5.10 V 2.5 3.0 3.3 3.6 5.0 2.53 3.03 3.33 3.67 5.10 V 100 ppm/°C 0.1 0.1 80 0.2 0.2 150 % % 450 120 12 170 200 600 140 14 200 220 430 V mV Ground Current Dropout Ground Current Current Limit Output Noise 10Hz to 100KHz IL=100mA (note 2) IL=100µA IL=100mA VIN=4.5V,IL=100µA Vout=0 CL=1µF 380 75 8 110 160 CL=200µF CL=3.3µF (Bypass=0.01µF pins 7 to (utc2951)) µA mA µA mA µV 160 100 For LP2951 8-Pin version only Reference Voltage Reference Voltage Feedback pin Bias Current Reference Voltage Temperature Coefficient Feedback Bias Current temperature Coefficient UTC (Note 4) 1.22 1.19 1.235 20 1.25 1.27 40 V V nA 50 ppm/°C 0.1 nA/°C UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R102-001,E UTC LP2950/2951 PARAMETER Error Comparator LINEAR INTEGRATED CIRCUIT PART NUMBER TEST CONDITION Output Leakage Current Output Low Voltage VOH=18V VIN=4.5V IOL=400µA Upper Threshold Voltage Lower Threshold Voltage Hysteresis (Note 3) MIN. TYP. MAX. UNIT 1 250 µA mV 3.2 %VO (Note 3) 7.6 (Note 3) %VO 15 mV Shutdown Input Input Logic Voltage Shutdown Pin Input Current Regulator Output Current Shutdown 1.3 Low(Regulator ON) High(Regulator OFF) Vshutdown=2.4V Vshutdown=18V Vshutdown>=2V,VIN<=18V, Vout=0, Feedback pin tied to 5V Tap. V 0.70 2.0 30 50 µA 450 3 600 10 µA µA 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:Vref≤Vout≤(Vin-1V), 2.3V≤Vin≤30V, 100µA≤IL≤100mA, TJ≤TJMAX UTC UNISONIC TECHNOLOGIES CO., LTD. 5 QW-R102-001,E UTC LP2950/2951 LINEAR INTEGRATED CIRCUIT APPLICATION CIRCUIT (10 Ampere Low Dropout Regulator) CURRENT LIMIT SECTION +VIN=Vout+0.5V 0.05Ω 680Ω 2N3906 UTC D65H0 470Ω 8 +VIN 4.7MΩ 5 ERROR UTC LP2951 3 220Ω 20kΩ SD FB GND 4 +VOUT 100m A 10kΩ R1 7 Vout 100µF 4.7µF 1% R2 1 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 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 LINEAR INTEGRATED CIRCUIT TYPICAL PERFORMANCE CHARACTERISTICS RL=50Ω 3 2 1 0 0 1 3 2 4 5 6 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 0 1 600 RL=50Ω 2 INPUT VOLTAGE(V) Fig. 7 Ground Pin Current 3 4 5 6 7 8 INPUT VOLTAGE(V) Fig. 8 Ground Pin Current 60 50 -75 -50 -25 0 25 50 75 -25 0 25 50 75 100 125 150 1.6 V IN=6V IL=100mA 6 5 4 100 125 150 50 -75 -50 Shutdown Threshold Voltage(V) QUIESCENT CURRENT(mA) m A) QUIESCENT CURRENT( 70 IL=100µA 1.8 7 80 ＞ 100 Fig. 9 Shutdown Threshold Voltage 100 VIN=6V IL=100µA 300 TEMPERATURE(°C)? 8 90 400 0 9 10 11 12 120 110 IL=100mA 500 DROPOUT VOLTAGE(mV) RL=50kΩ INPUT CURRENT(mA) OUTPUT VOLTAGE(V) 5 4 Fig. 6 Dropout Voltage Fig.5 Input Current Fig.4 Dropout Characteristics 6 -75 -50 TEMPERATURE(°C)? -25 0 25 50 75 100 125 150 1.4 1.2 1.0 0.8 0.6 -75 -50 TEMPERATURE(°C)? -25 0 25 50 75 100 125 150 TEMPERATURE(°C) Fig. 11 Dropout Voltage Fig. 10 Short Circuit Current 500 400 160 150 300 Dropout Voltage(mV) SHORT CIRCUIT CURRENT(mA) 170 140 130 120 110 100 -75 -50 200 100 0 -25 0 25 50 75 TEMPERATURE(°C)? UTC 100 125 150 0.1 1 10 100 OUTPUT CURRENT(mA) UNISONIC TECHNOLOGIES CO., LTD. 7 QW-R102-001,E