FEATURES 

Quad Output Step-Down µModule® Regulator with 4A per Output

Wide Input Voltage Range: 4V to 14V 

2.375V to 14V with External Bias 

0.6V to 5.5V Output Voltage 

4A DC, 5A Peak Output Current Each Channel

Up to 5.5W Power Dissipation (TA = 60°C, 200 LFM, No Heat Sink)

±1.5% Total Output Voltage Regulation

Current Mode Control, Fast Transient Response

Parallelable for Higher Output Current

Output Voltage Tracking

Internal Temperature Sensing Diode Output

External Frequency Synchronization

Overvoltage, Current and Temperature Protection

9mm × 15mm × 5.01mm BGA Package

APPLICATIONS

Multirail Point of Load Regulation

FPGAs, DSPs and ASICs Applications

 DESCRIPTION

The LTM®4644/LTM4644-1 is a quad DC/DC step-down µModule (micromodule) regulator with 4A per output. Outputs can be paralleled in an array for up to 16A capabil ity. Included in the package are the switching controllers, power FETs, inductors and support components. Operating over an input voltage range of 4V to 14V or 2.375V to 14V with an external bias supply, the LTM4644/LTM4644-1 supports an output voltage range of 0.6V to 5.5V. Its high efficiency design delivers 4A continuous (5A peak) output current per channel. Only bulk input and output capacitors are needed.