SC4614 查看數據表（PDF） - Semtech Corporation

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SC4614

500kHz Voltage Mode PWM Controller

Semtech Corporation 

SC4614

POWER MANAGEMENT

Pin Configuration

TOP VIEW

BST

1

10

DH

OCS

2

9

PN

COMP

3

8

DL

FB

4

7

VCC

GND

5

6

DRV

(MSOP-10)

Ordering Information

Part Numbers

SC4614MSTRT(1)(2)

SC4614EVB

Package

MSOP-10

Note:

(1) Only available in tape and reel packaging. A reel

contains 2500 devices.

(2) Lead free product. This product is fully WEEE and

RoHS compliant.

Pin Descriptions

Pin #

Pin Name

1

BST

2

OCS

3

COMP

4

FB

5

GND

6

DRV

7

VCC

8

DL

9

PN

10

DH

Pin Function

Boost input for top gate drive bias.

Current limit setting. Connect resistors from this pin to DRV pin and to ground to program

the trip point of load current. Refer to Applications Information Section for details.

Error amplifier output for compensation.

Voltage feed back of sychronous buck converter.

Chip ground.

Internal LDO output. Connect a 1uF ceramic capasitor from this pin to ground for

decoupling. This voltage is used for chip bias, including gate drivers.

Chip input power supply.

Gate drive for bottom MOSFET.

Phase node. Connect this pin to bottom N-MOSFET drain.

Gate drive for top MOSFET.

 2005 Semtech Corp.

4

www.semtech.com

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