TI TPS54202DDCR

降压降压4.5V28V2A

Overview

The TPS54202DDCR 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

• 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

• Consumer application