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L4993DTR датащи(PDF) 6 Page - STMicroelectronics

номер детали L4993DTR
подробное описание детали  Automotive low drop voltage regulator
PDF  31 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L4993DTR датащи(HTML) 6 Page - STMicroelectronics

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Block diagram and pins description
L4993
6/31
DS5285 Rev 10
Figure 2. Pins configuration
Table 2. Pins description
Pin
name
SO-8 (D)
SO-20 (MD)
Function
WEn
1
1
Watchdog Enable input
If high watchdog functionality is active
Gnd
2
4
Ground reference
Gnd
5, 6, 15, 16
Ground
Connected these pins to a heat spreader ground
Res
3
7
Reset output.
It is pulled down when output voltage goes below Vo_th
or frequency at Wi is too low.
Leave floating if not used.
Vcr
4
10
Reset timing adjust.
A capacitor between Vcr pin and gnd, sets the reset
delay time (trd)
Vcw
5
11
Watchdog timer adjust
A capacitor between Vcw pin and gnd, sets the time
response of the watchdog monitor.
Wi
6
14
Watchdog input.
If the frequency at this input pin is too low, the Reset
output is activated.
Connect to ground if not used
Vos
717
Voltage regulator output
Block to ground with a capacitor >100 nF (needed for
regulator stability)
Vs
8
20
Supply voltage
Block to ground directly at IC pin with a capacitor
N.C.
2, 3, 8, 9, 12,
13, 18, 19
Not connected



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