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PDF EST7502B Data sheet ( Hoja de datos )
| Número de pieza | EST7502B | |
| Descripción | PC Power Supply PWM | |
| Fabricantes | EST | |
| Logotipo |  |
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1. EST7502B  Hay una vista previa y un enlace de descarga de EST7502B (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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EST7502B PC Power Supply PWM with Supervisor
GENERAL 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.
FEATURES
• Complete PWM Control and Protection Circuitry
• Over Voltage Protection for 3.3V / 5V / 12V / PT
• Under Voltage Protection for 3.3V / 5V / 12V
• 280ms PG Time Delay
• Power Good Output is Open Drain Output
• PWM Control Output are Open Drain Output
• 280 ms Time Delay for UVP
• Remote ON/OFF function De–bounce Time
• Soft-Start function built-in
• 16–Pin Dual In–line Package
PIN CONFIGURATION
V33
V5
V12
PT
GND
RT
C1
C2
1 16
2 15
3 14
4 13
5 12
6 11
7 10
89
VADJ
OPNEGIN
OPOUT
VCC
DET
PG
SS
REM
ORDERING INFORMATION
ORDER NUMBER
Package
EST7502B
DIP 16
Shipping
Top Marking
www.esthome.com
1
2007-10-15 V2
1 page  
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EST7502B PC Power Supply PWM with Supervisor
APPLICATION NOTE
1.Input impedance:
Pin No.
1
2
3
4
Pin Name
V33
V5
V12
PT
Input impedance
52KΩ
81KΩ
52KΩ
24 KΩ+4.6 KΩ
2.Sawtooth OSC. Function:
3.REMOTE ON/OFF：
REM
REMONF
trem
REMON
toff
SS
trem
toff
www.esthome.com
5
2007-10-15 V2
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet EST7502B.PDF ] | |
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