L4938ED 데이터 시트보기 (PDF) - STMicroelectronics

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L4938ED

Advanced voltage regulator

STMicroelectronics 

Block diagram and pin description

L4938ED, L4938EPD

Table 2. Pin definitions and functions

PIn number

SO-20

PowerSO-20

Name

Function

18

19

20

1

2

3

4, 5, 6, 7, 14, 15,

16, 17

8

9

10

11

12

13

3

4

5

6

7

8

1, 10, 11, 20

14

15

16

17

18

2, 9, 19

VS2

VS1

SI

PR

CT

EN

GND

RES

SO

OUT1

ADJ

OUT2

NC

Supply voltage (400 mA regulator)

Supply voltage (100 mA regulator, reset, sense)

Sense input

Reset threshold programming

Reset delay capacitor

Enable (low activates the 400 mA regulator)

Ground

Reset output

Sense output

100 mA regulator output

Feedback of 400 mA regulator

400 mA regulator output

Not connected

6/20

Doc ID 17243 Rev 2

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