LTM4702 μModule® Regulator

ADI's LTM4702 is a complete 8 A step-down Silent Switcher μModule regulator in a tiny 6.25 mm × 6.25 mm × 5.07 mm BGA package. The package includes are the switching controller, the power MOSFETs, an inductor, and support components. Operating over an input voltage range of 3 V to 16 V, the LTM4702 supports an output range of 0.3 V to 5.7 V. A single resistor sets the output voltage, providing unity gain operation over the output range and resulting in virtually constant output noise independent of the output voltage. Only bulk input and output capacitors are needed to finish the design.

The LTM4702 employs Silent Switcher architecture with internal hot loop bypass capacitors to achieve low EMI and high efficiency. Also, the LTM4702 has an ultralow noise architecture to obtain exceptional low-frequency (<100 kHz) output noise. These low EMI and low noise features make the LTM4702 ideal for high current and noise-sensitive applications, which benefit from the high efficiency of a synchronous switching regulator.

The LTM4702 is available with RoHS compliant terminal finish.

Evaluation board EVAL-LTM4702-AZ is a step-down DC/DC switching converter featuring the LTM4702 μModule regulator. The evaluation board is designed to deliver 8 A maximum output current from a 4 V to 16 V input. The LTM4702 contains a current mode regulator IC, power inductor, and a modest amount of input and output capacitance. A single resistor (R3) sets the output voltage, providing unity gain operation over the output range, resulting in virtually constant output noise independent of output voltage.