AS3729B Datasheet, PDF (1/18 Pages) ams AG – Support for single or dual phase operation

AS3729B
8A Power Stage
General Description
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.
Figure 1:
Added Value of Using AS3729B
Key Benefits & Features
The benefits and features of AS3729B, 8A Power Stage are listed
below:
Benefits
• Support for single or dual phase operation
• 2 x 4A output stages are running up to
2.7MHz
• Over-temperature protection
• Cost effective, small package
Features
• 2 phases with separate control input
• Separate power NMOS & PMOS for 4A per phase
• Separate coil current feedback per phase
• Stand-Alone zero-crossing operation
• Integrated temperature monitoring
• WL-CSP16: 1.615mm x 1.615mm, 0.4mm pitch
Applications
This device is a high current dual-phase DC/DC and ideal for:
• Mobile phones
• Tablets
• Notebooks
ams Datasheet
[v1-03] 2015-Sep-28
Page 1
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