TI TPS54202HDDCR

Step-DownБак4.5V28V2A

Overview

The TPS54202HDDCR is a 4.5-V to 28-V input voltage range, 2-A synchronous buck converter. The device includes two integrated switching FETs, internal loop compensation and 5-ms internal soft start to reduce component count.

Cycle-by-cycle current limit in both high-side MOSFET protects the converter in an overload condition and is enhanced by a low-side MOSFET freewheeling current limit which prevents current runaway. Hiccup mode protection is triggered if the overcurrent condition has persisted for longer than the present time.

Features

? 4.5-V to 28-V wide input voltage range

? Integrated 148-mΩ and 78-mΩ MOSFETs for 2-A,

continuous output current

? Low 2-μA shutdown, 45-μA quiescent current

? Internal 5-mS soft start

? Fixed 500-kHz switching frequency

? Frequency spread spectrum to reduce EMI

? Advanced Eco-mode? pulse skip

? Peak current mode control

? Internal loop compensation

? Overcurrent protection for both MOSFETs with

hiccup mode protection

? Overvoltage protection

? Thermal shutdown

? SOT-23 (6) package

Applications

? 12-V, 24-V distributed power-bus supply

? Industry application

– White goods

? Consumer application