S3515

UNISONIC TECHNOLOGIES CO., LTD S3515 PC POWER SUPPLY SUPERVISORS DESCRIPTION The UTC S3515 is specially designed for switching power supply system. It provides over-voltage protection, over-current protection, under-voltage protection, on/off control and power good signal generating. OVP/UVP (Over/Under-Voltage Protection) monitors 3.3V, 5V and double 12V to protect our power supply and PC, FPO goes to high when one of these supply voltages exceeds their normal operation voltage range. OCP (Over Current Protection) monitors IS33, IS5, IS12 input current. The voltage difference across external current shunt is used for OCP functions. An external resistor which is connected between the RI pin and the GND pin can be used to adjust protection threshold. To achieve better immunity for lighting surge glitch and to prevent accidental power shut down during dynamic loading condition, the de-bounce time for UVP/OCP is 73us respectively. The deglitch time for OVP is 73uS for better noise immunity. The power supply is turned on after 38mS de-bounce time when PSON signal is set from high to low. To turn off power supply, PSON signal is set from low to high and the de-bounce time is 115mS. When PGI input voltage level is lower than the internal 1.15V reference voltage, after 73uS de-bounce time, the PGO signal is pulled low. DIP-14 CMOS IC SOP-14 FEATURES * Over/Under-Voltage Protection for 3.3V, 5V, and Two 12V * Over-Current Protection for 3.3V, 5V, and Two 12V * PGO and FPO pins with Open Drain Output Stage * 300mS Power Good Delay from PGI to PGO * 75mS Delay for 3.3V, 5V and 12V Power Turn on * 2.8mS Delay for PSON Control to FPO Turn off * 38mS / 115mS PSON on/off De-Bounce Time * 73uS width Noise Deglitches * 73uS De-Bounce Time for UVP and OCP * Wide Supply Voltage Range ORDERING INFORMATION Ordering Number Lead Free Plating Halogen Free S3515L-D14-T S3515G-D14-T S3515L-S14-R S3515G-S14-R S3515L-S14-T S3515G-S14-T Package DIP-14 SOP-14 SOP-14 Packing Tube Tape Reel Tube www.unisonic.com.tw Copyright © 2010 Unisonic Technologies Co., Ltd 1 of 8 QW-R502-073,B S3515 PIN CONFIGURATION PGI GND FPO PSON IS12 RI VS12B 1 2 3 4 5 6 7 14 13 12 11 10 9 8 PGO VDD VS5 VS33 VS12 IS33 IS5 CMOS IC PIN DESCRIPTION PIN NO 1 3 4 8 9 PIN NAME PGI FPO PSON IS5 IS33 TYPE input output input input input DESCRIPTION Power good input. Fault protection output, open drain output stage. Power on/off control signal sends from CPU or main-board. The power supply will be turned on/off after 38mS/115mS respectively. 5V over current protection. 3.3V over current protection. 12V over current protection. Regarding typical application, this pin is connected to the positive end of a current shunt through one resistor. When the voltage on IS12 is higher than that of VS12 by 5mV, OCP will be enabled. One current sink, 8 x IREF, is used to determine the voltage drop between the positive end of the current shunt and VS12. Adjusting the value of the external resistor can adjust the threshold for OCP accordingly. The operation for IS5 or IS33 is the same. Current sense setting. An external resistor Ri is connected between RI pin and GND pin will adjust a reference current, IREF = 1.15/Ri, for OCP function. 5V over/under-voltage protection. Second 12V over/under-voltage protection. 12V over/under-voltage protection. 3.3V over/under-voltage protection. Supply voltage. 4V ~ 15V. Power good logic output, open drain output stage. The power good delay is 300mS from PGI to PGO. Ground. 5 IS12 input 6 12 7 10 11 13 14 2 RI VS5 VS12B VS12 VS33 VDD PGO GND input input input input input power output power UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 8 QW-R502-073,B S3515 BLOCK DIAGRAM PWR PSON 38ms /115ms debounce RST VS33 UN + OV + VS 5 UN + OV + VS12A UN + OV + VS12 B UN + OV + RST VREF PGI UN + V12A + I REF×8 V12A + I REF×8 V12A + V12A + I REF×8 73µs debounce clr 300ms delay Power On Reset 2.4 ms Clr delay Clr 75ms delay Bandgap Reference PWR CMOS IC VREF=1.15 V RST 73µs debounce R SQ FPO PGO IS 33 IS5 VREF=1.15 V + - I REF=VREF/RI RI IS12 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 8 QW-R502-073,B S3515 ABSOLUTE MAXIMUM RATING PARAMETER DC Supply Voltage Input Voltage (PSON, VS33, VS5, PGI) SYMBOL VDD VIN CMOS IC RATINGS UNIT -0.3 ~ 16 V -0.3 ~ 8 V -0.3 ~ 16 Output Voltage (FPO) VOUT V -0.3 ~ 8 Power Dissipation (PGO) PD 400 mW Operating Temperature TOPR -40 ~ +85 °C Storage Temperature TSTG -55 ~ +150 °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. 2. Stresses above those listed may cause permanent damage to the device. RECOMMENDED OPERATING CONDITIONS PARAMETER SYMBOL DC Supply Voltage VDD Input Voltage (PSON, VS33, VS5, IS33, IS5, PGI) VIN Input Voltage (VS12,VS12B, IS12) FPO Output Voltage VOUT PGO FPO Output Sink Current IO(SINK) PGO Supply Voltage Rising Time (Note) tR Output Current RI IRI Note VDD rising and falling slew rate must be less than 14V/mS. RATINGS 4 ~ 15 7 15 15 7 20 10 1 12.5 ~ 62.5 UNIT V V V mA mS µA ELECTRICAL CHARACTERISTICS (VDD=12V, TA=25°C) PARAMETER SYMBOL UNDER-VOLTAGE AND PGI, PGO Input Threshold Voltage PGI VPGI Under-voltage protect VS33 VUVp Under-voltage protect VS5 Under-voltage protect VS12, VS12B Low Level Output Voltage (PGO) VOL Leakage Current (PGO) ILEAK Under-voltage Enable Delay Time Timing PG Delay PGI to PGO tPG Noise Deglitch Time PGI to PGO Timing UVP to Protection (FPO) TUVP OVER-VOLTAGE AND OVER-CURRENT PROTECTION Over-Voltage Protection VS33 VOVP Over-Voltage Protection VS5 Over-Voltage Protection VS12, VS12B Ratio of Current Sense Sink Current to Current IREF Sense Setting Pin (RI) Source Current Current Source Reference Voltage VREF OCP Comparator Input Offset Voltage VI(OFF) Low Level Output Voltage (FPO) VOL Leakage Current (FPO) ILEAK Timing OVP to Protection TOVP Timing OCP to Protection TOCP TEST CONDITIONS MIN 1.1 2.6 4.0 9.4 VDD = 12V ISINK =10mA PGO = 5V 49 200 150 VS33,VS5, VS12,VS12B 3.7 5.7 13.2 RI = 30 ΚΩ, 0.1% Resistor 7.6 1.1 -5 ISINK =20mA V(FPO) = 5V 73 73 75 300 250 73 3.9 6.1 13.8 8 1.15 TYP 1.15 2.8 4.2 9.9 MAX 1.2 3.0 4.4 10.4 0.7 5 114 450 350 UNIT V V V μA mS mS μS μS 4.1 6.5 14.4 8.4 1.2 5 0.7 5 V V mV V µA μS μS UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 8 QW-R502-073,B S3515 ELECTRICAL CHARACTERISTICS(Cont.) PARAMETER PSON CONTROL High-Level Input Voltage Low-Level Input Voltage Timing PGO Low to FPO High Timing PSON to On/Off ON OFF SYMBOL VIH VIL TPSOFF TPSON IPSON IDD VTHD VMIN PSON = 0V PSON = 5V, VDD = 5V 3.65 TEST CONDITIONS MIN 1.9 1.6 24 24 2.8 38 38 120 1.0 TYP CMOS IC MAX UNIT V V mS mS mS μA mA V V 0.98 4.0 57 57 Input Pull-up Current TOTAL DEVICE Supply Current VDD Start Threshold Voltage VDD Min. Operation Voltage After Start-up 1.8 4.0 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 8 QW-R502-073,B S3515 TYPICAL APPLICATION CIRCUIT CMOS IC UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 8 QW-R502-073,B S3515 TIMING DIAGRAM PSON On/Off and 3.3V, 5V,12V OVP Function CMOS IC VDD PSON TPSON(ON) TPSON(OFF) FPO TOVP PGI TPG PGO T PSOFF 3.3V,5V,12V 3.3V,5 V,12V OVP UVP and OCP Function VDD PSON FPO PGI TOVP TUVP PGO 12V OCP TOCP UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 of 8 QW-R502-073,B S3515 CMOS IC 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 8 of 8 QW-R502-073,B