View 3512-S14-R_1118398.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

UNISONIC TECHNOLOGIES CO., LTD 3512
PC POWER SUPPLY SUPERVISORS
DESCRIPTION
The UTC 3512 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
*Pb-free plating product number: 3512L
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
Normal 3512-D14-T 3512-S14-R 3512-S14-T Order Number Lead Free Plating 3512L-D14-T 3512L-S14-R 3512L-S14-T Package DIP-14 SOP-14 SOP-14 Packing Tube Tape Reel Tube
www.unisonic.com.tw Copyright (c) 2005 Unisonic Technologies Co., Ltd
1 of 9
QW-R502-073,A
3512
ORDERING INFORMATION(Cont.)
3512L-D14-T (1)Packing Type (2)Package Type (3)Lead Plating (1) R: Tape Reel, T: Tube (2) D14: DIP-14, S14: SOP-14 (3) L: Lead Free Plating, Blank: Pb/Sn
CMOS IC
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 9
QW-R502-073,A
3512
PIN CONFIGURATION
CMOS IC
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
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
3 of 9
QW-R502-073,A
3512
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 REFx8 V12A + I REFx8 V12A IS12 + V12A + IREFx8 73s 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 73s debounce R SQ FPO
PGO
IS33
IS 5
VREF=1.15 V
+ -
I REF=VREF/RI RI
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 9
QW-R502-073,A
3512
ABSOLUTE MAXIMUM RATING
PARAMETER DC Supply Voltage Input Voltage SYMBOL VDD VIN
CMOS IC
RATINGS UNIT -0.3 ~ 16 V PSON, VS33, VS5, PGI -0.3 ~ 8 V FPO -0.3 ~ 16 Output Voltage VOUT V PGO -0.3 ~ 8 Power Dissipation PD 400 mW Operating Temperature TOPR -40 ~ +85 Storage Temperature TSTG -55 ~ +150 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 DC Supply Voltage Input Voltage Input Voltage Output Voltage Output Sink Current PSON, VS33, VS5, IS33, IS5, PGI VS12,VS12B, IS12 FPO PGO FPO PGO See Note SYMBOL VDD VIN VOUT IO(SINK) tR IRI 1 12.5 MIN 4 MAX 15 7 15 15 7 20 10 62.5 UNIT V V V mA mS A
Supply Voltage Rising Time Output Current RI Note VDD rising and falling slew rate must be less than 14V/mS.
ELECTRICAL CHARACTERISTICS (VDD=12V, TA=25 )
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 , 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 A mS mS S S
4.1 6.5 14.4 8.4 1.2 5 0.7 5
V
V mV V A S S
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 9
QW-R502-073,A
3512
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 A 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
6 of 9
QW-R502-073,A
3512
TYPICAL APPLICATION CIRCUIT
CMOS IC
Power Supply Output Side 12V 12V 12V 12V
5V
PGI
UTC 3512
1 PGI 2 GND 3 FPO 4 PSON 5I 6 S12 RI 7 VS12B PGO V DD VS5 V S33 V S12 IS33 IS5 14 13 12 11 10 9 8
5V
VSB
PSON
3.3V
System Side
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
7 of 9
QW-R502-073,A
3512
TIMING DIAGRAM
PSON On/Off and 3.3V, 5V,12V OVP Function
CMOS IC
VDD
PSON
TPSON(ON)
TPSON(OFF)
FPO T OVP PGI TPG PGO
T PSOFF
3.3V,5V,12V
3.3V,5 V,12V OVP UVP and OCP Function
VDD
PSON
FPO
PGI
TOVP
T UVP
PGO
12V
OCP TOCP
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
8 of 9
QW-R502-073,A
3512
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
9 of 9
QW-R502-073,A

▲Up To Search▲

Price & Availability of 3512-S14-R

	To Download 3512-S14-R Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .