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L4995 датащи(PDF) 11 Page - STMicroelectronics

номер детали L4995
подробное описание детали  Automotive 5V, 500mA low drop voltage regulator
PDF  36 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L4995 датащи(HTML) 11 Page - STMicroelectronics

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Electrical specifications
L4995
12/37
DS5053 Rev 15
Table 7. Watchdog
Pin
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
Wi
Vih
Input high voltage
VS = 13.5V
3.5
V
Wi
Vil
Input low voltage
VS = 13.5V
1.5
V
Wi
Vih
Input hysteresis
VS = 13.5V
500
mV
Wi
Iwi
Pull down current
VS = 13.5V
Vwi = 3.5V
610
µA
Vcw
Vwlth
Low threshold
VS = 13.5V
10%
13%
16%
Vo_ref
Vcw
Vwhth
High threshold
VS = 13.5V
44%
47%
50%
Vo_ref
Vcw
Icwc
Charge current
VS = 13.5V,
Vcw = 0.1V
510
20
µA
Vcw
Icwd
Discharge current
VS = 13.5V,
Vcw = 2.5V
1.25
2.5
5
µA
Vcw
Twop
Watchdog period
VS = 13.5V,
Ctw = 47nF
20
40
80
ms
Res
twol
Watchdog output low time
VS = 13.5V,
Ctw = 47nF
48
16
ms
Table 8. Enable
Pin
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
En
VEn_low
En input low voltage
1
V
En
VEn_high
En input high voltage
3
V
En
VEn_hyst
En input hysteresis
830
mV
En
IEn
Pull down current
VS = 13.5V
10
18
µA



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