RT9701B Просмотр технического описания (PDF) - Richtek Technology

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RT9701B

100mΩ Power Distribution Switches

Richtek Technology 

RT9701B

Preliminary

z If the package is with dual VOUT or VIN pins, short both the same function pins as Figure 1 or Figure 2 to reduce the

internal turn-on resistance. If the output power will be delivered to two individual ports, it is specially necessary to

short both VOUT pin at the switch output side in order to protect the switch when each port are plug-in separately.

z Under normal operating conditions, the package can dissipate the channel heat away. Wide power-bus planes connected

to VIN and VOUT and a ground plane in contact with the device will help dissipate additional heat.

VIN

CIN

1uF

RT9701BCBL

VIN

VOUT

VIN

VOUT

GND

VOUT1

COUT

VOUT2

COUT

CIN = 1uF, COUT = 470uF (Low ESR) on M/B

CIN = 1uF, COUT = 330uF (Low ESR) on Notebook

CIN = 10uF, COUT = 1uF on USB device

Figure 1. High Side Power Switch

VIN

CIN

Chip Enable

RT9701BCB

VIN

VOUT

EN

VOUT

GND

VOUT1

COUT

VOUT2

COUT

Figure 2. High Side Power Switch with Chip Enable Control

www.richtek.com

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DS9701B-04 March 2007

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