Mp2234 - Hitachi 55HK6T64U Service Manual

MP2234

General Description
The MP2234 is a high frequency synchronous rectified step-down switch mode converter with built in
internal power MOSFETs. It offers a very compact solution to achieve 3A continuous output current over a
wide input supply range with excellent load and line regulation. The MP2234 has synchronous mode operation
for higher efficiency over output current load range. Current mode operation provides fast transient response
and eases loop stabilization. Full protection features include OCP and thermal shut down. The MP2234 requires
a minimum number of readily available standard external components and is available in a space saving 8-pin
TSOT23 package.
Features

Wide 4.5V to 16V Operating Input Range

2A Load Current

100mΩ/40mΩ Low Rds(on) Internal Power MOSFETs

High Efficiency Synchronous Mode Operation

Fixed 800kHz Switching Frequency

Frequency Sync from 300kHz to 2MHz External Clock

Power Save Mode at Light Load

External Soft Start

OCP Protection and Hiccup
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Table: Pin functions