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TX4138

Description
Output current: 4A Switching frequency: 200kHz Output type: Adjustable Number of output voltage paths: 1 Function type: Step-Down Output configuration: Positive
CategoryPower/power management    DC - DC chip   
File Size978KB,7 Pages
ManufacturerShenzhen Xindingsheng Technology Co., Ltd.
Websitehttp://www.xdssemi.com/
Shenzhen Xindingsheng Technology Co., Ltd. is a design company specializing in the development of analog integrated circuits for power management. The company's main investors are overseas multinational companies with backgrounds in the semiconductor industry. Shenzhen Xindingsheng Technology Co., Ltd.'s R&D core and management team are composed of a group of top engineers and senior experts from the industry. Shenzhen Xindingsheng Technology Co., Ltd. combines the industry's advanced design technology with an advantageous industrial chain to serve the global market. Provide customers with a full range of fast, efficient, cost-effective power management solutions and sincere services.
Download Datasheet Parametric View All

TX4138 Overview

Output current: 4A Switching frequency: 200kHz Output type: Adjustable Number of output voltage paths: 1 Function type: Step-Down Output configuration: Positive

TX4138 Parametric

Parameter NameAttribute value
Output voltage (minimum/fixed)0.8V
Output voltage (maximum)40V
Can output current4A
Switching operating frequency200kHz
Output typeAdjustable
Number of output voltage channels1
Minimum input voltage4.5V
Maximum input voltage60V
Power topologyBuck
Synchronous rectification or notNo
Function typeStep-Down
Output configurationPositive

TX4138 Preview

Download Datasheet
TX4138
4A, 60V, 200KHz Step-Down Converter
DESCRIPTION
The TX4138 is a monolithic step-down
switch mode converter. It achieves 4A
continuous output current over a wide input
supply range with excellent load and line
regulation.
The maximum peak current can be
programmed by sensing current through an
accurate sense resistor.
Fault
condition
protection
includes
cycle-by-cycle current limiting and thermal
shutdown.
The TX4138 requires a minimum number of
readily available standard external components.
The
TX4138
is
available
in
8-pin
ESOIC8 packages.
Maximum output current and input voltage:
FEATURES
Wide 4.5V to 60V Operating Input Range
Output Adjustable from 0.8V to 40V
Standby Current 400uA
Power Save Mode at light load
Programmable maximum peak current
32mΩ
Internal Power MOSFET Switch
93% Efficiency at Vin=60V,Vout=12V@2A
84.5% Efficiency at Vin=60V,Vout=5V@2A
Fixed 200KHz Frequency
Thermal Shutdown
Cycle-by-Cycle Over Current Protection
Available in 8-Pin ESOIC8 Packages
APPLICATIONS
Balance Bike
Ebike
USB Power Supplies
TYPICAL APPLICATION
3
C1A
100µF
100V
VIN
ILIM
BS
8
R3
5.1Ω
C3
100nF
C1B
2
SW
1
D1
SS510
L1
33µΗ
C4
12pF
5V/3A
C2
470µF
16V
R4
0.1µF
20mΩ
100V
6
TX4138
EN
POK
7
GND
4
FB 5
R1
300K
1%
R2
57.1K
1%
www.xdssemi.com
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