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BD8629FS Datasheet(PDF) 3 Page - Rohm

Part # BD8629FS
Description  FET Controller Type 3ch System Power Supply ICs
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BD8629FS Datasheet(HTML) 3 Page - Rohm

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Technical Note
3/11
BD8629FS
www.rohm.com
2009.05 - Rev.A
© 2009 ROHM Co., Ltd. All rights reserved.
●
Block Diagram
Fig.2 Block diagram
●
Pin description
No.
Symbol
Description
Explanation
1
SGND
Signal GND terminal
Small signal system GND
2
FB
Feed back terminal
Output voltage detection
3
PDET
Off latch signal output
Reset output
4
SW
Output terminal
Switching output
5
PGND
Power GND terminal
GND for power MOSFET
6
PGND
7
SW
Output terminal
Power Mos output
8
SW
9
VIN
Power supply input terminal
Power supply input. The decoupling is done to
PGND
10
VIN
11
VIN
12
REG
Internal regulator
Internal regulator
13
EN
Enable input
ON/OFF control for device operation
14
SS/DELAY
Soft start adjustment capacity connection
terminal
The soft start time is adjusted with the connected
capacitor
15
FC
Error amplifier output
Error amplifier phase compensation point
16
RT
Frequency adjustment resistance connection
terminal
The switching frequency is set by the connected
resistance


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