UNISONIC TECHNOLOGIES CO., LTD LR478

Transcription

1 UNISONIC TECHNOLOGIES CO., LTD REGULATOR IC DESCRIPTION The UTC developed for use in CD-ROM drives, combines a 3V regulator adapted to low power consumption with a much-sought reset function (regulator input monitoring),with internal delay circuit, set to detect.v. FEATURES *Large Output Current: 3mA (max.) *High Ripple Rejection Rate: 8dB(typ.) *Internal Thermal Shutdown Circuit *Internal Current Limiting Circuit *Easy Set Delay Time from Voltage Detection to Reset Release ORDERING INFORMATION Order Number Lead Free Halogen Free Package Packing L-xx-S8-T G-xx-S8-T SOP-8 Tube L-xx-S8-R G-xx-S8-R SOP-8 Tape Reel Note: XX: Output Voltage, refer to Marking Information. OUTPUT DETECTION VOLTAGE RANK LIST PART NUMBER REGULATOR OUTPUT VOLTAGE (V) DETECTION VOLTAGE (V) -3.V 3.±..±.9-3.3V 3.3±..±.9 -.V.±..±.9 MARKING INFORMATION PACKAGE VOLTAGE CODE MARKING SOP-8 :.V 33: 3.3V 3: 3.V 1 of 8 Copyright 13 Unisonic Technologies Co., LTD

2 PIN CONFIGURATION N.C GND 3 6 N.C VIN VOUT PIN DESCRIPTION PIN NO. PIN NAME FUNCTIONS EQUIVALENT CIRCUIT DIAGRAM 1 N.C Input voltage detection output Input voltage detection output pin pin logic V IN <V S L V IN >V S H Output voltage on/off-control pin 3 V L H Output OFF ON Connect cont-terminal with V IN when it is not used. V IN Voltage supply input pin V OUT Regulator Output pin 6 N.C 7 GND GND pin 8 Delay time capacitor pin pin output delay time can be set by the capacitance connected to the pin. t PLH =1.C t PLH : transmission delay time[s] C: capacitor value [F] 3K K VOUT - UNISONIC TECHNOLOGIES CO., LTD of 8

3 BLACK DIAGRAM VIN VOUT - - Thermal Protect GND 8 UNISONIC TECHNOLOGIES CO., LTD 3 of 8

4 ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT Supply Voltage V IN -.3 ~ 1 V Output Current I OUT ma Power Dissipation(note3) P D 7 mw Junction Temperature T J 1 C Operating Temperature T OPR - ~ 8 C Storage Temperature T STG -~1 C Note 1. 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.. The device is guaranteed to meet performance specification within ~ 7 operating temperature range and assured by design from ~ 8. RECOMMENDED OPERATION CONDITIONS PARAMETER SYMBOL RATINGS UNIT Operating Voltage V OPR ~ 1 V Output Current I OUT ~ 3 ma ELECTRICAL CHARACTERISTICS(V =1.6V, Ta= C, unless otherwise specified ) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT No-load Input Current 1 I Q 1 V IN =V, I OUT =ma 3 8 ma No-load Input Current I Q V IN =V, I OUT =ma ma Input Current (OFF) I Q 3 V IN =V, V =.V μa Regulator Output Voltage V OUT V IN =V, I OUT =3mA V Input-Output Different Voltage V I/O(DIFF) V IN =3.V, I OUT =1mA.1.3 V Line Regulation V OUT V IN =.~.V, I OUT =3mA 1 mv Load Regulation V OUT V IN =V, I OUT =~3mA 1 mv V OUT Temperature Coefficient V OUT / T V IN =V, I OUT =3mA, T J = -~8 C 1 ppm/ C Ripple Rejection RR V IN =V, I OUT =3mA, f=1hz V RIPPLE =1V P-P 8 db Output Noise Voltage V IN V IN =V, I OUT =3mA, f=~8khz 1 μvrms Terminal Current I V =1.6V 1 μa High Threshold Voltage V THR(H) 1.6 V IN.3 V Low Threshold Voltage V THR(L) -.3. V Reset Detection Voltage VS V IN = V THR(H) V THR(L) V Vs Temperature Coefficient V S / T T J = -~8 C 1 ppm/ C Hysteresis Voltage V HYS V IN = V THR(H) V THR(L) V THR(H) 1 mv Low-Level Output Voltage V OL V IN =3.9V, R L =.7K 1 mv Output Leakage Current I LEAK V IN =V ±.1 μa Output Current 1 I OUT 1 V IN =3.9V, R L = ma Output Current I OUT V IN =3.9V, R L =, Ta= -~8 C 3 ma H Transmission Delay Time t PLH =.μf 3 9 μs Reset Delay Time t PLH 1 V IN =V V, =.1μF 1 ms L Transmission Delay Time t PLH 3 9 μs Threshold Operating Voltage V THR(OPR) V ol =.V.6.8 V UNISONIC TECHNOLOGIES CO., LTD of 8

5 TEST CIRCUIT A 1µF.7kO V IN UTC GND V OUT 8.1µF 7µF V A TYPICAL APPLICATION CIRCUIT V IN 1µF.7kO UTC 8 V OUT C OUT 7µF GND.1µF Note: External output-capacitor(c OUT ) for stability is necessary due to without internally compensated. UNISONIC TECHNOLOGIES CO., LTD of 8

6 TIMING CHART V IN V?Vs VS V H L V OUT V V t PLH1 V V UNISONIC TECHNOLOGIES CO., LTD 6 of 8

7 TYPICAL CHARACTERISTICS Output Voltage (V) 3 1 Detection Voltage IOUT =ma VOUT 1 3 Input Voltage (V) Output Voltage (V) Output Volttage vs Temperature Temperature ( C) Line Regulation 3 Load Regulation Line Regulation (mv) Load Regulation (mv) Input Voltage (V) Output Current (ma) Ripple Rejection Detecting Volttage vs Temperature Ripple Rejection (db) Output Voltage (V) Frequency (Hz) Temperature ( C) UNISONIC TECHNOLOGIES CO., LTD 7 of 8

8 TYPICAL CHARACTERISTICS(Cont.) Allowable loss (mv) Allowable Loss On board 1mm Temperature ( C) 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 8 of 8