SC2446AEVB 查看數據表（PDF） - Semtech Corporation

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SC2446AEVB

Dual-Phase, Single or Dual Output Synchronous Step-Down Controller

Semtech Corporation 

SC2446A

POWER MANAGEMENT

Pin Descriptions

Pin

Pin Name Pin Function

21

GDL2

Logic Enable gate drive signal for Output 2.

22

PGND

No connection.

23

PVCC

No connection.

24

GDL1

Logic Enable gate drive signal for Output 1.

25

GDH1

PWM Output for the High-side N-channel MOSFET of Output 1.

26

BST1

No connection.

27

VPN1

No connection.

28

SS1/EN1

An external capacitor tied to this pin sets (i) the soft-start time (ii) output overload latch off time

for buck converter 1. Pulling this pin below 0.7V shuts off the gate drivers for the first controller.

 2005 Semtech Corp.

7

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