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L4993D 数据表(PDF) 10 Page - STMicroelectronics

部件名 L4993D
功能描述  Low drop voltage regulator
PDF  30 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L4993D 数据表(HTML) 10 Page - STMicroelectronics

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Electrical specifications
L4993
10/30
Pin
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
Vcw
Icwd
Discharge current
Vs = 13.5V,
Vcw = 2.5V
1.02.134.5
µA
Vcw
Twop
Watchdog period
Vs = 13.5V,
Ctw = 47nF
25
50
90
ms
Res
twol
Watchdog output low time
Vs = 13.5V,
Ctw = 47nF
6
10.5
22
ms
Table 8.
Watchdog Enable
Pin
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
WEn
WEn_low
Enable input low voltage
1
V
WEn
WEn_high
Enable input high voltage
3
V
WEn
WEn_hyst
Enable input hysteresis
500
800
1100
mV
WEn
Ileak
Pull down current
WEn = 5V
2
8
20
µA
Table 7.
Watchdog (continued)



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