Guangdong, China
Business Type:
Trading Company
Year of Establishment:
Plant Area:
58 square meters
Management System Certification:
Average Lead Time:
Peak season lead time: within 15 workdays
Off season lead time: within 15 workdays
OEM/ODM Service
Sample Available

TPS54540, electronic component distributor, Singapore IC manufacturer / supplier in China, offering TPS54540DDAR TPS54540 DC-DC IC, I7-4790 Intel corei7 4790 I7 4790 LGA 1150 CPU, G120B-SM-373 G120B-SM System-On-Modules - SOM G120 Module and so on.

Gold Member Since 2018


Min. Order / Reference FOB Price
100 Pieces US $0.072-15/ Piece
Port: Shenzhen, China
Production Capacity: 1000000PCS
Payment Terms: T/T, Western Union, Paypal
shape: SMD
Application: Standard Generalized Integrated Circuit
Conductive Type: Unipolar Integrated Circuit
Integration: ULSIC
Technics: Thin Film IC
Type: Analog IC

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Basic Info.

Model NO.
Genuine New Original
Transport Package
HS Code


TPS54540DDAR: Conv DC-DC Single Step Down 4.5V to 42V 8-Pin SOIC-PowerPad T/R 

Package: SOIC-8

Mfr. Part#: TPS54540DDAR

Mfr.: TI
Datasheet: TPS54540DDAR TPS54540 DC-DC IC(e-mail or chat us for PDF file)

ROHS Status: TPS54540DDAR TPS54540 DC-DC IC

Quality: 100% Original

Warranty: 180 days

The TPS54540 is a 42 V, 5 A, step down regulator with an integrated high side MOSFET. The device survives load dump pulses up to 45V per ISO 7637. Current mode control provides simple external compensation and flexible component selection. A low ripple pulse skip mode reduces the no load supply current to 146 µA. Shutdown supply current is reduced to 2 µA when the enable pin is pulled low.

Undervoltage lockout is internally set at 4.3 V but can be increased using the enable pin. The output voltage start up ramp is internally controlled to provide a controlled start up and eliminate overshoot.

A wide switching frequency range allows either efficiency or external component size to be optimized. Output current is limited cycle-by-cycle. Frequency foldback and thermal shutdown protects internal and external components during an overload condition.

The TPS54540 is available in an 8-terminal thermally enhanced HSOIC PowerPAD package.


Key Features

  • High Efficiency at Light Loads with Pulse Skipping 
  • 92-mO High-Side MOSFET
  • 146 µA Operating Quiescent Current and 
    2 µA Shutdown Current
  • 100 kHz to 2.5 MHz Fixed Switching Frequency
  • Synchronizes to External Clock
  • Low Dropout at Light Loads with Integrated BOOT 
    Recharge FET
  • Adjustable UVLO Voltage and Hysteresis
  • 0.8 V 1% Internal Voltage Reference
  • 8-Terminal HSOIC with PowerPAD Package
  • -40°C to 150°C TJ Operating Range
  • Supported by WEBENCH Software Tool

Output ConfigurationPositive
TopologyBuck, Split Rail
Output TypeAdjustable
Number of Outputs1
Voltage - Input (Min)4.5V
Voltage - Input (Max)42V
Voltage - Output (Min/Fixed)0.8V
Voltage - Output (Max)41.1V
Current - Output5A
Frequency - Switching100kHz ~ 2.5MHz
Synchronous RectifierNo
Operating Temperature-40°C ~ 150°C (TJ)
Mounting TypeSurface Mount
Package / Case8-PowerSOIC (0.154", 3.90mm Width)
Supplier Device Package8-SO PowerPad

Why choosing us
  • Located in Shenzhen, the electronic market center of China.
  • 100% guarantee components quality: Genuine Original.
  • Sufficient stock on your urgent demand.
  • Sophisticated colleagues help you solve problems to reduce your risk with on-demand manufacturing
  • Faster shipment: In stock components can ship the same day .
  • 24 Hours service 



  1. Product images are for reference only.
  2. You can contact sales person to apply for a better price.
  3.  For more products, Pls do not hesitate to contact our Sales team.   

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