Manufacturer Texas Instruments
Manufacturer Part Number TPS5450DDA
Description 5A Wide Input Step Down SWIFT Conv
Stock Code W004184
Download Technical Datasheet

The TPS5450DDARG4 is a 5A 500kHz Step-down Converter that integrates a low-resistance, high-side N-channel MOSFET. Included on the substrate with the listed features are a high-performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions, an under-voltage-lockout circuit to prevent start-up until the input voltage reaches 5.5V, an internally set slow-start circuit to limit inrush currents and a voltage feed-forward circuit to improve the transient response. Using the ENA pin, shutdown supply current is reduced to 18µA typically. Other features include an active-high enable, over-current limiting, over-voltage protection and thermal shutdown. To reduce design complexity and external component count, the TPS5450 feedback loop is internally compensated.

  • Up to 5A continuous (6A peak) output current
  • High efficiency greater than 90% enabled by 110mΩ integrated MOSFET switch
  • Wide output voltage range (adjustable down to 1.22V with 1.5% initial accuracy)
  • Internal compensation minimizes external parts count
  • 18µA Shutdown supply current
  • Improved line regulation and transient response by input voltage feed-forward
  • System protected by over-current limiting, overvoltage protection and thermal shutdown
  • Green product and no Sb/Br

Packaging

Cut Tape (CT)

Lifecycle Status

Active

Number of Outputs

1

Number of Regulated Outputs

1

Mounting Style

Surface Mount

Frequency

500 kHz

Lead-Free Status

Lead Free

Operating Temperature

-40.0 °C to 125 °C

Output Voltage

1.23 V (min), 31.0 V, 31.0 V (max)

Output Current

5.00 A

RoHS

Compliant

Switching Frequency

500 kHz (max)

Number of Pins

8

Topology

Buck

REACH SVHC Compliance

No SVHC

Quiescent Current

3.00 mA

Case/Package

HSOP