TPS54202DDCR Integrated Circuits (ICs)

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1. Description

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. 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

2. Features

    1. 4.5-V to 28-V wide input voltage range

    2. Integrated 148-mΩ and 78-mΩ MOSFETs for 2-A,continuous output current

    3. Low 2-μA shutdown, 45-μA quiescent current

    4. Internal 5-mS soft start

    5. Fixed 500-kHz switching frequency

    6. Frequency spread spectrum to reduce EMI

    7. Advanced Eco-mode™ pulse skip

    8. Peak current mode control  

    9. Internal loop compensation

  10. Overcurrent protection for both MOSFETs with hiccup mode protection

  11. Overvoltage protection

  12. Thermal shutdown

  13. SOT-23 (6) package

3. Applications

    1. 12-V, 24-V distributed power-bus supply

    2. Industry application

        – White goods

    3. Consumer application

        – Audio

        – STB, DTV

        – Printer

4. Pin Configuration

5. Pin Functions