Power Switches. RT9742 Datasheet

RT9742 Switches. Datasheet pdf. Equivalent

RT9742 Datasheet
Recommendation RT9742 Datasheet
Part RT9742
Description 3A/2A/1.5A/1A High-Side Power Switches
Feature RT9742; ® RT9742 70mΩ/55mΩ, 3A/2A/1.5A/1A High-Side Power Switches with Flag General Description The RT974.
Manufacture Richtek
Datasheet
Download RT9742 Datasheet




Richtek RT9742
®
RT9742
70mΩ/55mΩ, 3A/2.5A/2A/1.5A/1A/0.5A High-Side Power
Switches with Flag
General Description
The RT9742 is a cost-effective, low-voltage, single
N-MOSFET high-side Power Switch IC for USB application.
Low switch-on resistance and low supply current are
realized in this IC.
The RT9742 integrates an over-current protection circuit,
a short fold back circuit, a thermal shutdown circuit and
an under-voltage lockout circuit for overall protection.
Besides, a flag output is available to indicate fault
conditions to the local USB controller. Furthermore, the
chip also integrates an embedded delay function to prevent
miss-operation from happening due to inrush-current. The
RT9742 is an ideal solution for USB power supply and
can support flexible applications since it is available in
TSOT-23-5, TSOT-23-5 (FC) and SOT-23-3 package.
Features
70mΩ/55mΩ (typ.) N-MOSFET Switch
Operating Range : 2.7V to 6V
Reverse Blocking Current
Under Voltage Lockout
Deglitched Fault Report (FLG)
Thermal Protection with Fold-back
Over Current Protection
Short Circuit Protection
UL ApprovedE219878
Nemko Approved-NO87949
Applications
USB Peripherals
Notebook PCs
Pin Configuration
VIN EN/EN
54
23
VOUT GND FLG
TSOT-23-5 / TSOT-23-5 (FC)
(TOP VIEW)
VOUT
EN
54
23
VOUT GND VIN
TSOT-23-5
(For RT9742M Only)
GND
3
2
VIN VOUT
SOT-23-3
Simplified Application Circuit
Supply Voltage
2.7V to 6V
Chip Enable
VIN FLG
CIN RT9742
EN/EN VOUT
GND
USB Controller
Over-Current
COUT
VBUS
D+
D-
GND
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
DS9742-05 June 2016
Data
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1



Richtek RT9742
RT9742
Ordering and Marking Information
Version
Product
Code
Current
Discharge
Function
EN Function
Active Active Internal
High Low Pull High
TSOT-23-5
(FC)
Package
TSOT-23-5
SOT-23-3
RT9742AGJ5F 07=
3A
Yes
V
V
RT9742BGJ5F 06=
3A
Yes
V
V
RT9742ANGJ5F 0F=
3A
No
V
V
RT9742BNGJ5F 0E=
3A
No
V
V
RT9742CGJ5F 05=
2A
Yes
V
V
RT9742DGJ5F 04=
2A
Yes
V
V
RT9742CNGJ5F 0D=
2A
No
V
V
RT9742DNGJ5F 0C=
2A
No
V
V
RT9742CGJ5 0K= 2A Yes V
V
RT9742DGJ5 0J= 2A
Yes
V
V
RT9742CNGJ5 11=
2A
No
V
V
RT9742DNGJ5 10=
2A
No
V
V
RT9742JNGV 6A= 2A
No
V
V
RT9742EGJ5F 03= 1.5A
Yes
V
V
RT9742FGJ5F 02= 1.5A
Yes
V
V
RT9742ENGJ5F 0B= 1.5A
No
V
V
RT9742FNGJ5F 0A= 1.5A
No
V
V
RT9742EGJ5
0H= 1.5A
Yes
V
V
RT9742FGJ5
0G= 1.5A
Yes
V
V
RT9742ENGJ5 0Z= 1.5A
No
V
V
RT9742FNGJ5 0Y= 1.5A
No
V
V
RT9742KNGV 69= 1.5A
No
V
V
RT9742GGJ5F 01=
1A
Yes
V
V
RT9742HGJ5F 00=
1A
Yes
V
V
RT9742GNGJ5F 09=
1A
No
V
V
RT9742HNGJ5F 08=
1A
No
V
V
RT9742GGJ5 0F= 1A Yes V
V
RT9742HGJ5 0E= 1A
Yes
V
V
RT9742GNGJ5 0X=
1A
No
V
V
RT9742HNGJ5 0W=
1A
No
V
V
RT9742LNGV
68=
1A
No
V
V
RT9742MGJ5
14= 1.5A
Yes
V
V
RT9742MNGJ5 15= 1.5A
No
V
V
RT9742NGJ5F 43= 2.5A
Yes
V
V
RT9742PGJ5F DD= 2.5A
Yes
V
V
RT9742NNGJ5F 42= 2.5A
No
V
V
RT9742PNGJ5F CC= 2.5A
No
V
V
RT9742QGJ5
47= 0.5A
Yes
V
V
RT9742RGJ5
45= 0.5A
Yes
V
V
RT9742QNGJ5 46= 0.5A
No
V
V
RT9742RNGJ5 44= 0.5A
No
V
V
RT9742SNGV 6V= 0.5A
No
V
V
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
is a registered trademark of Richtek Technology Corporation.
DS9742-05 June 2016



Richtek RT9742
Note :
Richtek products are :
RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Functional Pin Description
Pin Name
VOUT
Output Voltage
GND
Ground.
FLG Fault FLAG Output.
EN/EN
Chip Enable (Active High/Low).
VIN Power Input Voltage.
Pin Function
Functional Block Diagram
TSOT-23-5 / TSOT-23-5 (FC) Package
EN/EN
Bias UVLO
Oscillator
Charge
Pump
Thermal
Protection
Current
Limiting
Gate
Control
Output Voltage
Detection
Auto Discharge
Delay
RT9742
VIN
VOUT
FLG
GND
SOT-23-3 Package
Bias
Oscillator
UVLO
Charge
Pump
Thermal
Protection
Current
Limiting
Gate
Control
Output Voltage
Detection
Auto
Discharge
VIN
VOUT
GND
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
DS9742-05 June 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
3







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