UNISONIC TECHNOLOGIES CO., LTD LP2950/2951 LINEAR INTEGRATED CIRCUIT 100 mA LOW-DROPOUT VOLTAGE REGULATOR TO-92 The UTC LP2950/2951 are monolithic integrated voltage regulators with low dropout voltage, and low quiescent current. It includes many features that suitable for different applications. SOP-8 DIP-8 Lead-free: LP2950L-XX/LP2951L Halogen-free: LP2950G-XX/LP2951G ORDERING INFORMATION Ordering Number Normal Lead Free LP2950-xx-D08-T LP2950L-xx-D08-T LP2950-xx-S08-T LP2950L-xx-S08-T LP2950-xx-S08-R LP2950L-xx-S08-R LP2950-xx-T92-B LP2950L-xx-T92-B LP2950-xx-T92-K LP2950L-xx-T92-K LP2950-xx-TN3-T LP2950L-xx-TN3-T LP2950-xx-TN3-R LP2950L-xx-TN3-R LP2951-D08-T LP2951L-D08-T LP2951-S08-T LP2951L-S08-T LP2951-S08-R LP2951L-S08-R Note: Pin Assignment: I:VIN O:VOUT G:GND TO-252 FEATURES * Fixed output versions, 2.5V, 3V, 3.3V, 3.6V and 5V, are available. * High accuracy output voltage. * 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 err flog available for 8 pin package. * Output voltage programmable for LP2951. 1 1 DESCRIPTION Halogen Free LP2950G-xx-D08-T LP2950G-xx-S08-T LP2950G-xx-S08-R LP2950G-xx-T92-B LP2950G-xx-T92-K LP2950G-xx-TN3-T LP2950G-xx-TN3-R LP2951G-D08-T LP2951G-S08-T LP2951G-S08-R Package Packing DIP-8 SOP-8 SOP-8 TO-92 TO-92 TO-252 TO-252 DIP-8 SOP-8 SOP-8 Tube Tube Tape Reel Tape Box Bulk Tube Tape Reel Tube Tube Tape Reel OUTPUT VOLTAGE CODE(For LP2950) OUTPUT VOLTAGE 2.5V 3.0V 3.3V 3.6V 5.0V CODE 25 30 33 36 50 www.unisonic.com.tw Copyright © 2008 Unisonic Technologies Co., Ltd 1 of 7 QW-R102-001.L LP2950/2951 LINEAR INTEGRATED CIRCUIT PIN CONFIGURATIONS UTC LP2950 1 2 3 UTC LP2950 OUTPUT INPUT GND INPUT TO-92 Plastic Package Bottom View OUTPUT 1 SENSE 2 GND SOT-252 Package 8 INPUT 7 FEEDBACK OUTPUT 1 NC 2 8 SHUTDOWN 3 6 5V TAP 4 5 ERROR SHUTDOWN 3 GND SOP-8 OR DIP-8 PACKAGE FOR UTC LP2951 INPUT 7 NC 6 NC 5 ERROR UTC LP2950 UTC LP2951 GND OUTPUT 4 SOP-8 OR DIP-8 PACKAGE FOR UTC LP2950 BLOCK DIAGRAM UNREGULATED DC FEEDBACK INPUT 7 8 OUTPUT 5V 150mA MAX. 1 SENSE 2 182kΩ FROM CMOS OR TTL SHUT DOWN 3 ERROR AMPLIFIER 60mV 5V TAP 6 330KΩ 1.5 μF 60kΩ ERROR ERROR DETECTION COMPARATOR 1.23 REF 5 TO CMOS OR TTL GND 4 FOR UTC LP2951 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 7 QW-R102-001.L LP2950/2951 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC -0.3 ~ +30 V Feedback Voltage VFB -1.5 ~ +30 V Shutdown Voltage VSHDN -0.3 ~ +30 V Power Dissipation PD Internally Limited W Operation Junction Temperature TJ -40 ~ +125 °C Storage Temperature TSTG -65 ~ +150 °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. THERMAL DATA PARAMETER Junction-to-Ambient Junction-to-Case SYMBOL TO-92 TO-252 SOP-8 DIP-8 TO-92 TO-252 SOP-8 RATING 160 92 180 105 83 6 45 θJA θJC UNIT °C/W °C/W ELECTRICAL CHARACTERISTICS (TJ=25°C, VIN=6V, IL=100μA, CL=1μF, unless otherwise specified.) For All Version: PARAMETER SYMBOL Output Voltage VOUT Output Voltage Output Voltage Temperature Coefficient Line Regulation Load Regulation VOUT Dropout Voltage Ground Current Dropout Ground Current Current Limit Output Noise (10Hz ~ 100KHz) (Bypass=0.01μF pins 7 to 1 (LP2951)) TEST CONDITION MIN TJ=25°C (Note 1) VOUT×0.98 VOUT×0.98 -25°C≦TJ≦+85°C(Note 1) 100μA≦IL≦100mA, TJ≦TJ(max) VOUT×0.98 TcVo ΔVOUT 6V≦VIN≦30V ΔVOUT 100μA≦IL≦100 mA IL=100μA VD IL=100mA (Note 2) IL=100μA IG IL=100mA VIN=4.5V,IL=100μA ILIMIT VOUT=0 CL=1μF eN CL=200μF CL=3.3μF UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw TYP MAX UNIT VOUT VOUT×1.02 V VOUT VOUT×1.02 V VOUT VOUT×1.02 V 20 0.03 0.04 50 380 75 8 110 160 0.1 0.1 80 450 120 12 170 200 100 ppm/°C 0.2 0.2 150 600 140 14 200 220 430 160 100 % % mV μA mA μA mA μV 3 of 7 QW-R102-001.L LP2950/2951 LINEAR INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS(Cont.) For UTC LP2951 8-Pin Version Only PARAMETER SYMBOL VREF Reference Voltage VREF Reference Voltage Feedback pin Bias Current IFB Reference Voltage Temperature VREF(TC) Coefficient Feedback Bias Current IFB(TC) Temperature Coefficient Error Comparator Output Leakage Current IO(LEAK) Output Low Voltage VOL VTHU Upper Threshold Voltage VTHL Lower VHYS Hysteresis Shutdown Input Low VIL Input Logic Voltage High VIH TEST CONDITION Over temperature(Note 4) MIN 1.22 1.19 TYP 1.235 20 VOH=30V VIN=4.5V, IOL=400μA (Note 3) (Note 3) (Note 3) MAX 1.25 1.27 40 UNIT V V nA 50 ppm/°C 0.1 nA/°C 1 250 3.2 7.6 15 μA mV %VO %VO mV Regulator ON 1.3 0.70 V Regulator OFF 2.0 VSHDN=2.4V 30 50 μA Shutdown Pin Input Current ISHDN VSHDN=30V 450 600 μA VSHDN≧2V, VIN≦30V, VOUT=0 Regulator Output Current IDFF 3 10 μA Shutdown Feedback pin tied to 5V Tap. Note: 1. Additional conditions for 8-pin versions are FB pin tied to 5VTAP, Output tied to Sense (VOUT=5V) and VSHDN≤0.8V . 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. 3. Comparator thresholds are expressed in terms of percentage value of voltage output. 4. VREF≤VOUT≤(VIN-1V), 2.3V≤VIN≤30V, 100μA≤IL≤100mA, TJ≤TJ(MAX) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 7 QW-R102-001.L LP2950/2951 LINEAR INTEGRATED CIRCUIT TYPICAL APPLICATION CIRCUIT 10 Ampere Low Dropout Regulator CURRENT LIMIT SECTION +VIN=Vout+0.5V 0.05 680 2N3906 UTC D65H0 470 8 +VIN 4.7M ERROR 5 UTC LP2951 3 220 20k SD FB GND 4 +VOUT 100m A 10k R1 7 Vout 100 F 1% 4.7 F R2 1 47 0.033 F VOUT=1.23V*(1+R1/R2) For 5V output use internal resistors.Wire pin 6 to 7 and wire pin 2 to +VOUT Fig.1 V IN UTC UTC UTC UTC UTC LP2950-2.5 LP2950-3.0 LP2950-3.3 LP2950-3.6 LP2950-5.0 V OUT Fig.2 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 7 QW-R102-001.L LP2950/2951 LINEAR INTEGRATED CIRCUIT TYPICAL CHARACTERISTICS UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 7 QW-R102-001.L LP2950/2951 LINEAR INTEGRATED CIRCUIT TYPICAL CHARACTERISTICS(Cont.) UTC assum es no responsibility for equipm ent failures that result from using products at v alues that exceed, ev en m om entarily, rated v alues (such as m axim um ratings, operating condition ranges, or other param eters) 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 system s where m alfunction 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 inform ation presented in this docum ent does not form part of any quotation or contract, is believ ed to be accurate and reliable and m ay be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 of 7 QW-R102-001.L