Datasheet Microchip MIC23451 — 数据表

MIC23451
3MHz, 2A Triple Synchronous
Buck Regulator with
HyperLight LoadВ® and Power Good General Description Features The MIC23451 is a high-efficiency, 3MHz, triple 2A,
В®
synchronous buck regulator with HyperLight Load mode.
HyperLight Load provides very-high efficiency at light
loads and ultra-fast transient response, which is ideal for
supplying processor core voltages. An additional benefit of
this proprietary architecture is very low output ripple
voltage throughout the entire load range with the use of
small output capacitors. The 4mm x 4mm QFN package
saves board space and requires only five external
components for each channel. The MIC23451 is designed for use with a very small
inductor, down to 0.47ВµH, and an output capacitor as small
as 2.2ВµF that enables a total solution size that is less than
1mm height.
The MIC23451 has a very-low quiescent current of 24ВµA
each channel and achieves as high as 81% efficiency at
1mA. At higher loads, the MIC23451 provides a constant
switching frequency around 3MHz while achieving peak
efficiencies up to 93%.
The MIC23451 is available in a 26-pin 4mm x 4mm QFN …