EST7502B Datasheet – PC Power Supply PWM ( PDF )

This is one of the pulse-width modulation types.

Part Number : EST7502B

Function : PC Power Supply PWM with Supervisor

Pinouts : DIP 16 Pin type

Manufacturers : EST

See the preview image and the PDF file for more information.



Description :

The EST7502B is a pulse–width modulation (PWM) control circuit with complete protection circuits for used in the SMPS (Switched Mode Power Supply). It contains various functions, which are Over Voltage Protection, Under Voltage Protection, Power Good Output (PGO), Remote On/Off control and etc. It can minimize external components of switching power supply systems in personal computer.

Over Voltage Protection (OVP) monitors 3.3V, 5V, 12V and PT input voltage level. Under Voltage Protection (UVP) monitors 3.3V, 5V and 12V input voltage level. Power Good Output monitors the voltage level of power supply.


EST7502B Pinout




1. Complete PWM Control and Protection Circuitry
2. Over Voltage Protection for 3.3V / 5V / 12V / PT
3. Under Voltage Protection for 3.3V / 5V / 12V
4. 280ms PG Time Delay
5. Power Good Output is Open Drain Output
6. PWM Control Output are Open Drain Output
7. 280 ms Time Delay for UVP
8. Remote ON/OFF function De–


EST7502B Datasheet

EST7502 pdf

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TPS386000 Datasheet PDF – Quad Supply Voltage Supervisor

Part Number : TPS386000

Function : Quad Supply Voltage Supervisor with Adjustable Delay and Watchdog Timer

Package : 4mm x 4mm, 20-pin QFN

Manufacturers : Texas Instruments

Pinouts :

TPS386000 datasheet


Description :

The TPS386000, TPS3860x0 family of supply voltage supervisors (SVSs) can monitor four power rails that  are greater than 0.4V and one power rail less than 0.4V (including negative voltage) with a 0.25% (typical) threshold accuracy.

SVS-4 monitors the threshold window using two comparators. The extra comparator can be
configured as a fifth SVS to monitor negative voltage with voltage reference output VREF.
The TPS3860x0 has a very low quiescent current of 11μA (typical) and is available in a small, 4mm x 4mm, QFN-20 package.


Features :

1. Adjustable Delay Time: 1.4 ms to 10 s

2. Threshold Accuracy: 0.25% Typical

3. Very Low Quiescent Current: 11 µA Typical

4. Watchdog Timer With Dedicated Output

5. Well-Controlled Output During Power Up



TPS386000 Datasheet PDF Download

TPS386000 pdf

Other data sheets within the file :

TPS386000RGPR, TPS386000RGPT, TPS386040RGPR, TPS386040RGPT