S3525G-D14-T UTC [Unisonic Technologies], S3525G-D14-T Datasheet

S3525G-D14-T

Manufacturer Part Number

S3525G-D14-T

Description

PC POWER SUPPLY SUPERVISORS

Manufacturer

UTC [Unisonic Technologies]

Datasheet

1.S3525G-D14-T.pdf (9 pages)

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S3525

PC POWER SUPPLY

SUPERVISOR

system. it provides protection circuits, power good output (PGO)

indicator, fault protection output (FPOB) and a PSONB control.

under voltage protection (UVP) and over current protection (OCP)

monitoring for system voltages and currents.

9.9V respectively, the under voltage protection (UVP) function will be

enabled. FPOB will be set to high to turn off the PWM controller IC.

Toggling the PSONB from low to high will reset the fault protection

latch.

OCP functions. An external resistor can be used to adjust protection

threshold.

PSONB signal is set from high to low. To turn off power supply,

PSONB signal is set from low to high with the delay time 38mS. The

PGI circuitry provides a power-down warning signal for PGO. When

PGI input is lower than the internal 1.20V reference voltage, PGO

signal is pulled low.

* OVP/UVP monitors 3.3V, 5V, 12V input voltage level.

* OCP monitors I

* Fault protection output (FPOB) with Open Drain Output stage.

* Power good output (PGO) with Open Drain Output stage.

* 38ms de-bounce time for PSONB input signal.

* 300ms time delay from PGI to PGO.

* 2.4ms time delay for PSONB to turn off FPOB.

www.unisonic.com.tw

The UTC S3525 is specially designed for switching power supply

The protection circuits include over voltage protection (OVP),

When 3.3V, 5V or 12V voltage is decreasing to 2.68V, 4.3V and

The voltage difference across external current shunt is used for

The power supply is turned on after 38mS delay time when

ORDERING INFORMATION

DESCRIPTION

FEATURES

Lead Free Plating

S3525L-S14-R

S3525L-D14-T

S3525L-S14-T

S33

UNISONIC TECHNOLOGIES CO., LTD

, I

Ordering Number

, I

S12

input current sense.

S3525G-S14-R

S3525G-D14-T

S3525G-S14-T

Halogen Free

Package

SOP-14

DIP-14

Tape Reel

Packing

Tube

CMOS IC

QW-R502-105.B

1 of 9

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S3525G-D14-T Summary of contents

Page 1

... PSONB to turn off FPOB. ORDERING INFORMATION Ordering Number Lead Free Plating S3525L-D14-T S3525L-S14-R S3525L-S14-T www.unisonic.com.tw Copyright © 2010 Unisonic Technologies Co., Ltd Package Halogen Free S3525G-D14-T DIP-14 S3525G-S14-R SOP-14 S3525G-S14-T SOP-14 CMOS IC Packing Tube Tape Reel Tube ...

Page 2

S3525 PIN ASSIGNMENT FUNCTION DESCRIPTION PGI PSONB PGI<1.2V L PGI<1.2V L PGI<1.2V L PGI<1.2V L PGI>1.2V L PGI>1.2V L PGI>1.2V L PGI>1. Note: FPOB=L means: fault is not latched. FPOB=H means: fault is latched PGO=L means: fault. ...

Page 3

S3525 BLOCK DIAGRAM + PGI UN - Bandgap Reference V =1.2V REF V 12A + I S33 - I *8 REF V S33 + 12A I + S12AB - I *8 REF + V ...

Page 4

S3525 ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage 12A Input Voltage Output Voltage Operating Temperature Storage Temperature Note Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ...

Page 5

S3525 ELECTRICAL CHARACTERISTICS (Cont.) PARAMETER SWITCHING CHARACTERISTICS PSONB ON(PSONB Low to FPOB Low) PSONB OFF(PSONB Hi to PGO Low) PGI to PGO Delay Time Timing PGO Low to FPOB high UVD/OCD Turn on Delay Time Noise Deglitch Time Noise Deglitch ...

Page 6

S3525 APPLICATION INFORMATION UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw CMOS QW-R502-105.B ...

Page 7

S3525 APPLICATION INFORMATION UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw CMOS QW-R502-105.B ...

Page 8

S3525 TYPICAL TIMMING DIAGRAM 1) PGI (UNDER-VOLTAGE (UNDER-VOLTAGE 33, 5, 12A, 12B t PSONB UVP2 t UVP2 FPOB t (PSONB ON) PGO PGI S33 ...

Page 9

S3525 TYPICAL TIMMING DIAGRAM(Cont (OVER-VOLTAGE). 33, 5, 12A, 12B 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 ...

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