ams Datasheet

Page 1

[v1-03] 2015-Sep-28

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AS3729B

8A Power Stage

The AS3729B is a companion power stage, intended to be used

with AS372x products.

It cannot be used without a DC/DC controller. It contains the

power FETs for 2 phases and is capable to handle output

currents of 4A per phase.

Ordering Information and Content Guide appear at end of

datasheet.

Key Benefits & Features

The benefits and features of AS3729B, 8A Power Stage are listed

below:

Figure 1:

Added Value of Using AS3729B

Applications

This device is a high current dual-phase DC/DC and ideal for:

• Mobile phones

• Tablets

• Notebooks

Benefits

Features

• Support for single or dual phase operation

• 2 phases with separate control input

• 2 x 4A output stages are running up to

2.7MHz

• Separate power NMOS & PMOS for 4A per phase

• Separate coil current feedback per phase

• Stand-Alone zero-crossing operation

• Over-temperature protection

• Integrated temperature monitoring

• Cost effective, small package

• WL-CSP16: 1.615mm x 1.615mm, 0.4mm pitch

General Description