SC1205H Просмотр технического описания (PDF) - Semtech Corporation

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SC1205H

High Speed Synchronous Power MOSFET Driver

Semtech Corporation 

POWER MANAGEMENT

Pin Configuration

Top View

SC1205H

Ordering Information

PRELIMINARY

Device (1)

SC1205HSTR

Package

SO-8

Temp Range (TJ)

0° to 125°C

Note:

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

contains 2500 devices.

(SO-8)

Pin Descriptions

Pin #

1

2

3

4

5

6

7

8

Pin Name

DRN

TG

BST

CO

EN

VS

BG

PGND

Pin Function

This pin connects to the junction of the switching and synchronous MOSFETs . This pin

can be subjected to a -2V minimum relative to PGND without effecting operation.

Output gate drive for the switching (high-side) MOSFET.

Bootstrap pin. A capacitor is connected between BST and DRN pins to develop the

floating bootstrap voltage for the high-side MOSFET. The capacitor value is typically

between 0.1µF and 1µF (ceramic).

TTL-level input signal to the MOSFET drivers.

When high, this pin enables the internal circuitry of the device. When low, TG and BG

are forced low and the supply current (5V) is less than 10µA.

5V-9.0V supply. A .22-1µF ceramic capacitor should be connected from 5V to PGND

very close to this pin.

Output drive for the synchronous (bottom) MOSFET.

Ground. Keep this pin close to the synchronous MOSFETs source.

Note:

(1) All logic level inputs and outputs are open collector TTL compatible.

 2002 Semtech Corp.

5

www.semtech.com

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