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MP1477

17V, 3A, 800kHz, High-Efficiency, Synchronous, Step-Down Converter with COT Control in SOT563 Package

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Description

The MP1477 is a fully integrated, high-frequency, synchronous, rectified, step-down, switch-mode converter with internal power MOSFETs. The MP1477 offers a very compact solution that achieves 3A of continuous output current, with excellent load and line regulation over a wide input range. The MP1477 uses synchronous mode operation for higher efficiency over the output current-load range.
Constant-on-time (COT) control operation provides very fast transient response, easy loop design, and very tight output regulation.

Full protection features include short-circuit protection (SCP), over-current protection (OCP), under-voltage protection (UVP), and thermal shutdown. The MP1477 requires a minimal number of readily available, standard external components, and is available in a space-saving SOT563 (1.6mmх1.6mm) package.

Features & Benefits

Wide 4.2V to 17V Operating Input Range
58mΩ/27mΩ Low R_DS(ON) Internal Power MOSFETs
200µA Low I_Q
High-Efficiency Synchronous Mode Operation
Power Save Mode (PSM) at Light-Load
Fast Load Transient Response
800kHz Switching Frequency
Internal Soft Start (SS)
Over-Current Protection (OCP) and Hiccup Mode
Thermal Shutdown
Output Adjustable from 0.8V
Available in a SOT563 (1.6mmх1.6mm) Package

Evaluation Tools

EV1477-TF-00B Evaluation Kit High-Efficiency, 800kHz, 3A, 17V, Step-Down Converter Evaluation Board

The EV1477-TF-00B evaluation board is designed to demonstrate the capabilities of the MP1477, a fully integrated, high-frequency, synchronous, rectified, step-down, switch-mode converter with internal power MOSFETs. It offers a very compact solution to achieve a 3A of continuous output current over a wide input range, with excellent load and line regulation. The MP1477 has synchronous mode operation for higher efficiency over the output current load range.

Constant-on-time control operation provides very fast transient response and easy loop design, as well as very tight output regulation. Full protection features include SCP, OCP, UVP, and thermal shutdown.

The MP1477 requires a minimal number of readily available, standard external components, and is available in a space-saving SOT563 (1.6mmx1.6mm) package.

$25.00
+ tax