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L9777B13TR Datasheet(PDF) 2 Page - STMicroelectronics

Part # L9777B13TR
Description  Low power voltage regulator
Download  25 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9777B13TR Datasheet(HTML) 2 Page - STMicroelectronics

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Contents
L9777
2/25
Doc ID 13496 Rev 2
Contents
1
Block diagrams and pins configuration . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1
Block diagram (option A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2
Option B features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3
Option C features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1
Voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3
NMI and RESET driver delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.4
RESET adjustable threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.5
Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4
VDD regulated voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5
VDD_LOW (option C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6
Device options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.1
Option A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.2
Option B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.3
Option C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7
Electrical and thermal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 19
8
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
9
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24


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