NN31001A datasheet(10/36 Pages) PANASONIC

Part #	NN31001A

Description	7 A Synchronous DC-DC Step down Regulator,

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Manufacturer	PANASONIC [Panasonic Semiconductor]

Direct Link	http://www.panasonic.com/industrial/

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NN31001A

Page 10 of 33

Product Standards

Pin No.

Pin name

Type

Description

4

PGND

Ground

Ground pin for Power MOSFET

* Pin No. 47 : recommended settings – no connection

5

6

7

47

8

PVIN

Power

supply

Power supply pin for Power MOSFET

Recommended rise time ( time to reach 90 % of set value ) setting is

greater than or equal to 10 µs and less than or equal to 1 s.

9

10

11

12

13

14

15

16

17

18

19

LX

Output

Power MOSFET output pin

An inductor is connected and switching operation is carried out

between VIN and GND.

* Pin No. 19 to 25 : recommended settings – no connection

20

21

22

23

24

25

26

LX_S

Output

Power MOSFET output sense pin

* Pin No. 26 to 27 : recommended settings – no connection

27

28

BST

Output

High side Power MOSFET gate driver pin

Bootstrap operation is carried out in order to drive the gate voltage of High

side Power MOSFET.

* Pin No. 28 to 30 : recommended settings – no connection

29

30

31

NC

-

Non Connection pin

32

AGND

Ground

Ground pin

39

45

33

AVIN

Power supply

Power supply pin

Recommended rise time ( time to reach 90 % of set value ) setting is

greater than or equal to 10 µs and less than or equal to 1 s.

34

EN

Input

ON / OFF control pin

DC-DC is stopped at Low level input, and it is started at High level input.

PIN FUNCTIONS (Continued)

Note : Detailed pin descriptions are provided in the OPERATION and APPLICATION INFORMATION section.

Doc No. TA4-EA-06262

Revision. 2

Established : 2014-07-03

Revised

: 2014-07-08

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