AAT4900_06 datasheet(7/13 Pages) ANALOGICTECH

部品番号	AAT4900

部品情報	Buffered Power Half-Bridge

PDF	13 Pages

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メーカー	ANALOGICTECH [Advanced Analogic Technologies]

ホームページ	http://www.analogictech.com

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Functional Block Diagram

Control Logic

and

Shoot-Through

Protection

CLK

GND

AAT4900

Buffered Power Half-Bridge

4900.2006.05.1.3

Typical Applications

DC/DC Converter

The most common AAT4900 applications include a

DC/DC converter output power stage and a MOS-

FET gate drive buffer.

Figure 1 shows a common configuration when used

as a DC/DC converter power stage with synchro-

nous rectification. The enable pin can be used to

force the LX output to a high impedance state under

light load conditions. This enables the output induc-

tor to operate in discontinuous conduction mode

(DCM), improving efficiency under light load condi-

tions. The body diode associated with the low side

switching device gives the AAT4900 inductive

switching capability, clamping the LX node at a

diode drop below GND during the break-before-

make time.

Figure 1: AAT4900 DC/DC Converter Power Stage.

DC/ DC

Controller

CLK

GND

AAT4900

VIN = 2.0 to 5.5V

VOUT = 0 to VIN

IOUT = 0 to 1A

GND

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