5A Power Stage
General Description
AS3729
5A Power Stage
The AS3729 is a companion power stage, intended to be used with AS372x produc...
Description
General Description
AS3729
5A Power Stage
The AS3729 is a companion power stage, intended to be used with AS372x products. It cannot be used without a DCDC controller. It contains the power FETs for 2 phases and is capable to handle output currents of 2.5A per phase. Ordering Information and Content Guide appear at end of datasheet.
Figure 1: Added Value of Using AS3729
Key Benefits & Features
The benefits and features of AS3729, 5A Power Stage are listed below:
Benefits
Support for single or dual phase operation
2 x 2.5A output stages are running on 3MHz
Over-temperature protection Cost effective, small package
Features
2 phases with separate control input
Separate power NMOS & PMOS for 2.5A per phase Separate coil current feedback per phase Stand-alone zero-crossing operation
Integrated temperature monitoring
16-pin WL-CSP: 1.615mm x 1.615mm, 0.4mm pitch
Applications
The device is a high current dual-phase DCDC and ideal for: Mobile phones Tablets Notebooks
ams Datasheet [v1-24] 2015-Aug-13
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Figure 2: AS3729 Block Diagram
Block Diagram
The functional blocks of this device for reference are shown below:
AS3729 Block Diagram: This figure shows the block diagram of the DCDC controller inside the Main PMIC and the AS3729 Power Stage with all relevant system components.
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ams Datasheet [v1-24] 2015-Aug-13
AS3729 − Pin Assignment
Pin Assignment
Figure 3: Pin Diagram
Figure 4: Pin Description
Pin Numb...
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