rt9701b Richtek Technology Corporation, rt9701b Datasheet - Page 10

• Manufacturer Part Number: rt9701b
• Description: 100m Power Distribution Switches
• Manufacturer: Richtek Technology Corporation

RT9701B
www.richtek.com
10
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.
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.
Figure 2. High Side Power Switch with Chip Enable Control
V
IN
Chip Enable
V
1uF
C
IN
IN
CIN = 1uF, COUT = 470uF (Low ESR) on M/B
CIN = 1uF, COUT = 330uF (Low ESR) on Notebook
CIN = 10uF, COUT = 1uF on USB device
C
Figure 1. High Side Power Switch
IN
VIN
VIN
RT9701BCBL
VIN
EN
Preliminary
RT9701BCB
GND
GND
VOUT
VOUT
VOUT
VOUT
C
V
OUT
OUT1
V
C
OUT1
OUT
C
OUT
C
V
OUT
OUT2
V
OUT2
DS9701B-04 March 2007