RT9745A Datasheet, PDF (1/16 Pages) Richtek Technology Corporation – Low Resistance Load Switch

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RT9745A
Dual Channel, Low Resistance Load Switch
General Description
The RT9745A is a small, low R_ON, dual channel load switch
with EN controlled pin. The product contains two N-
MOSFETs that can operate between an input voltage range
of 0.8V to 5.5V. Also, it supports a maximum continuous
current of 6A each channel. Each switch is independently
controlled by EN pins (EN1 and EN2), which can directly
interface with low-voltage control signals.
The RT9745A is available in the WDFN-14TL 3x2 package
with exposed pad for high power and heat dissipation.
Ordering Information
RT9745A
Package Type
QW : WDFN-14TL 3x2 (W-Type)
Note :
Lead Plating System
G : Green (Halogen Free and Pb Free)
Richtek products are :
 RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
 Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
0P : Product Code
0PW
W : Date Code
Features
 Integrated Dual Channel Load Switch
 Input Voltage Range : 0.8V to 5.5V
 Low R_ON Resistance
 R_ON = 27mΩ at V_IN = 5V (V_DD = 5V)
 R_ON = 27mΩ at V_IN = 3.6V (V_DD = 5V)
 R_ON = 27mΩ at V_IN = 1.8V (V_DD = 5V)
 6A Maximum Continuous Switch Current Per
Channel
 Low Quiescent Current
 75μA (Both Channels)
 55μA (Single Channel)
 Low Control Input Threshold Enables Use of 1.4V/
1.8V/2.5V/3.3V Logics
 Configurable Rise Time
 Quick Output Discharge (QOD)
 Adaptive Discharge Current
 14T-Lead WDFN Package with Thermal Pad
Applications
 Ultrabook^TM
 Notebooks/Netbooks
 Tablet PC
 Consumer Electronics
 Set-Top Boxes/Residential Gateways
 Telecom Systems
 Solid State Drives (SSD)
Simplified Application Circuit
C_IN1
Dual Power
Supply
or
Dual DC/DC
Converter
Enable
Enable
C_IN2
VIN1
VOUT1
RT9745A
EN1
VDD
EN2
VIN2
SS1
SS2
VOUT2
GND
C_OUT1
V_OUT1
R_L1
C_SS1
C_SS2
C_OUT2
V_OUT2
R_L2
Copyright ©2014 Richtek Technology Corporation. All rights reserved.
DS9745A-00 August 2014
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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