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L9777B Datasheet(PDF) 8 Page - STMicroelectronics

Part # L9777B
Description  Low power voltage regulator
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9777B Datasheet(HTML) 8 Page - STMicroelectronics

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Block diagrams and pins configuration
L9777
8/25
Doc ID 13496 Rev 2
8I
TIMING
OPTION A & B: RESET filter time
External cap on this pin sets the delay time between NMI and
RESET output
OPTION C: not used and should be left floating or shorted to
ground.
9O
VCC
Voltage regulator output
External cap CVCC
≥ 220 nF is needed to stabilize the regulator
10
O
VDD
VDD
Output regulated voltage switched on/off by VDD_EN pin.
External cap CVDD=100 nF is needed to stabilize the regulator
11
GND
Ground
12
I
RADJ
VCC under voltage Threshold Adjustment
By connecting this pin to an external resistor divider vs. VCC, is
possible to set the VCC under voltage threshold.
If this pin is connected to GND the under voltage threshold is set
by internal circuit.
Table 2.
Pin description (continued)
Pin#
I/O
Name
Function


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