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RT9740A の電気的特性と機能

RT9740AのメーカーはRichtekです、この部品の機能は「Ultra-Low Resistance Load Switch」です。


製品の詳細 ( Datasheet PDF )

部品番号 RT9740A
部品説明 Ultra-Low Resistance Load Switch
メーカ Richtek
ロゴ Richtek ロゴ 




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RT9740A Datasheet, RT9740A PDF,ピン配置, 機能
®
RT9740A
Dual Channel, Ultra-Low Resistance Load Switch
General Description
The RT9740A is a small, ultra-low RON, 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 RT9740A is available in the WDFN-14TL 3x2 package
with exposed pad for high power and heat dissipation.
Ordering Information
RT9740A
Package Type
QW : WDFN-14TL 3x2 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Note :
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
0M : Product Code
0MW
W : Date Code
Features
Integrated Dual Channel Load Switch
Input Voltage Range : 0.8V to 5.5V
Ultra-Low RON Resistance
RON = 18mΩ at VIN = 5V (VDD = 5V)
RON = 18mΩ at VIN = 3.6V (VDD = 5V)
RON = 18mΩ at VIN = 1.8V (VDD = 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
RoHS Compliant and Halogen Free
Applications
UltrabookTM
Notebooks/Netbooks
Tablet PC
Consumer Electronics
Set-Top Boxes/Residential Gateways
Telecom Systems
Solid State Drives (SSD)
Simplified Application Circuit
CIN1
Dual Power
Supply
or
Dual DC/DC
Converter
Enable
Enable
CIN2
VIN1
VOUT1
RT9740A
EN1
VDD
EN2
VIN2
SS1
SS2
VOUT2
GND
COUT1
VOUT1
RL1
CSS1
CSS2
COUT2
VOUT2
RL2
Copyright ©2014 Richtek Technology Corporation. All rights reserved.
DS9740A-01 July 2014
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1

1 Page





RT9740A pdf, ピン配列
Function Block Diagram
VIN1
SS1
EN1
Control Logic
RT9740A
VOUT1
VDD
Charge Pump
GND
EN2
SS2
VIN2
Control Logic
VOUT2
Operation
The RT9740A contains two N-MOSFETs which controlled
by EN pin independently.
Enable Control
Asserting ENx pin high enables the switch. Switch will
turn on as the EN signal is higher than VENH, and turn off
when the EN signal is lower than VENL. Thus, it can operate
under low voltage logic, please refer to the electrical
characteristics. This pin cannot be left floating and must
be tied either high or low voltage for proper functionality.
Charge Pump
Provides sufficient bias voltage to both N-MOSFETs.
Adjustable Rise Time
Connecting a capacitor to GND on the SSx pin sets the
slew rate for each channel. It could also be used to prevent
in-rush current.
Copyright ©2014 Richtek Technology Corporation. All rights reserved.
DS9740A-01 July 2014
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
3


3Pages


RT9740A 電子部品, 半導体
RT9740A
Typical Application Circuit
VIN1
0.8V to 5.5V
CIN1
1, 2 VIN1
VOUT1 13, 14
CIN2
RT9740A
Enable
VDD
2.5V to 5.5V
Enable
VIN2
0.8V to 5.5V
CIN3
3 EN1
4 VDD
5 EN2
6, 7 VIN2
CIN4
11, 15 (Exposed Pad) GND
SS1 12
SS2 10
VOUT2 8, 9
COUT1
VOUT1
RL1
CSS1
CSS2
COUT2
VOUT2
RL2
Timing Diagram
VIN VOUT
VOUT
+
-
CIN RT9740A
COUT RL
Enable
EN
VDD
GND
Single Channel Shown for Clarity
TEST CIRCUIT
VEN
VOUT
50%
tON
tD
50%
tOFF
50%
50%
VOUT
tr
90%
10%
tf
90%
10%
Figure 1. Test Circuit and tON/tOFF Waveforms
Copyright ©2014 Richtek Technology Corporation. All rights reserved.
www.richtek.com
6
is a registered trademark of Richtek Technology Corporation.
DS9740A-01 July 2014

6 Page



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部品番号部品説明メーカ
RT9740A

Ultra-Low Resistance Load Switch

Richtek
Richtek


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