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BD3021HFP-M 数据表(PDF) 8 Page - Rohm

部件名 BD3021HFP-M
功能描述  Regulator with Voltage Detector and Watchdog Timer
Download  15 Pages
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制造商  ROHM [Rohm]
网页  http://www.rohm.com
标志 ROHM - Rohm

BD3021HFP-M 数据表(HTML) 8 Page - Rohm

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Technical Note
8/14
BD3021HFP-M
www.rohm.com
2010.11 - Rev.A
© 2010 ROHM Co., Ltd. All rights reserved.
●
WDT timer ON/OFF switch INH (Resistance value is typical value)
BD3021HFP-M has a switch INH to turn the WDT ON/OFF
IC Internal Block Diagram
By using INH ON, CT potential can be pulled up to internal voltage VREF_R (invalid with power ON reset))
＜
Timing Chart＞
CT
CLK
RESET
CT pull up Voltgge
Upper switching threshold voltage
lower switching threshold voltage
WDT ON
Vcc
VOUT
13.5V
0V
5V
0V
1.15V
0.15V
0V
0V
0V
OUT voltage
1.25V
5V
0V
5V
INH
LOW
WDT
ON
WDT
OFF
HIGH
INH
CT
500kΩ
VREF_R
(TYP≒1.25V)
10kΩ
ON/OFF
Circuit
External Capacitor


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