TPS54202DDCT Description

The TPS54202 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. By integrating the MOSFETs and employing the SOT-23 package, the TPS54202 achieves the high power density and offers a small footprint on the PCB. Advanced Eco-mode implementation maximizes the light load efficiency and reduces the power loss. The frequency spread spectrum operation is introduced for EMI reduction. 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.

TPS54202DDCT 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

TPS54202DDCT Applications

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

• Industry application: White goods

• Consumer application: Audio, STB, DTV, Printer

• 5G Communication

• Electrification of automobile

• Industrial 4.0