Name: TPS54540DDAR - Buck, Split Rail Switching Regulator IC 5A SOIC-8
Brand: Texas Instruments
SKU: 035-TPS54540DDAR
Price: 309.86 INR
Availability: InStock

Technical Specifications

Brand:

Texas Instruments

Case/Package:

SOIC-8

Mount:

Surface Mount

Number of Pins:

Max Input Voltage:

42 V

Max Junction Temperature (Tj):

150 C

Max Operating Temperature:

125 C

Max Output Current:

5 A

Max Output Voltage:

41.1 V

Max Supply Voltage:

42 V

Min Input Voltage:

4.5 V

Min Operating Temperature:

-40 C

Min Output Voltage:

800 mV

Min Supply Voltage:

4.5 V

Nominal Supply Current:

146 uA

Operating Supply Voltage:

42 V

Output Current:

5 A

Output Voltage:

41.1 V

Switching Frequency:

2.5 MHz

Full Reel Quantity:

2500

Warranty Information

All the products supplied by Evelta are genuine and original. We offer 14 days replacement warranty in case of manufacturing defects. For more details, please visit our cancellation and returns page.

Description

Resources:

Datasheet

TPS54540DDAR – 5A, 42V High-Efficiency Buck Switching Regulator IC

The TPS54540DDAR is a high-performance 5A step-down (buck) DC-DC converter designed for industrial and automotive power systems requiring efficiency, flexibility, and reliability. Featuring an integrated high-side MOSFET and supporting a wide input voltage range up to 42V, the device efficiently steps down higher supply voltages to regulated lower outputs. Built to survive load dump pulses up to 45V (ISO 7637 compliant), it is ideal for automotive and rugged industrial environments. With current-mode control, the TPS54540 offers simple external compensation and flexible component selection, making it adaptable to a variety of design requirements. The device operates with a low ripple pulse-skip mode, reducing no-load supply current to just 146uA, and supports ultra-low shutdown current (2uA) for power-sensitive applications. The internally controlled startup ramp ensures smooth and reliable power-up without output overshoot. A wide switching frequency range allows designers to optimize between efficiency and solution size. Built-in cycle-by-cycle current limiting, frequency foldback, and thermal shutdown provide comprehensive protection against overload and fault conditions. Packaged in an 8-pin thermally enhanced SOIC PowerPAD, the TPS54540DDAR offers outstanding thermal performance, compact design, and reliable operation under demanding conditions.

Key Features

Wide Input Voltage Range: Operates up to 42V and withstands load dump pulses to 45V (ISO 7637).
High Output Current: Delivers up to 5A continuous current with integrated high-side MOSFET.
Current Mode Control: Simplifies compensation and provides excellent line and load regulation.
Low Ripple Pulse-Skip Mode: Minimizes no-load current consumption (146uA typical).
Ultra-Low Shutdown Current: Only 2uA when disabled via the EN pin.
Internally Controlled Soft-Start: Provides smooth output voltage ramp and prevents overshoot.
Flexible Switching Frequency: Adjustable to optimize between efficiency and compactness.
Comprehensive Protection: Includes cycle-by-cycle current limit, frequency foldback, and thermal shutdown.
Integrated UVLO Function: 4.3V internal threshold, adjustable via the enable pin.
Compact PowerPAD SOIC-8 Package: Ensures excellent thermal dissipation and easy PCB layout.