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Step-Down µModule® Regulator: LTM4624

August 19, 2013
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4624HotShotLinear Technology launches the LTM4624, a 14 V, 4A step-down µModule® (micromodule) regulator in a 6.25 x 6.25 x 5.01 mm BGA package which, including a few passive components, fits within 1 cm² on a single-sided PCB or 0.5 cm² double-sided.

Like other µModule regulators, the LTM4624 includes the DC/DC controller, power switches, inductor and compensation in a single package. Only two external ceramic capacitors (1206 case size) and a resistor (0603 or smaller case size) are required for operation.

The LTM4624 operates from a 4V to 14V input supply, delivering a regulated output adjustable between 0.6V to 5.5V, ideal for applications in communications, storage, industrial, and medical systems.

The LTM4624 operates at a 1MHz typical switching frequency with a very low 5mV output ripple at full load during a 12VIN to 1.5VOUT conversion. With the addition of an external bias supply above 4V, the LTM4624 can operate from an input voltage as low as 2.375V. Overcurrent and overtemperature fault protection are included in the regulator.

Summary of Features: LTM4624

  • 4A DC/DC Step-Down Solution in Less Than 1cm²
  • Only Two Capacitors & One Resistor Required for a Complete Solution
  • 6.25 x 6.25 x 5.01mm BGA
  • 4V to 14V VIN Range ...  (As Low as 2.375 VIN with External Bias Supply)
  • Low 5mV Output Ripple at 1.5VOUT, 4A
  • User Adjustable VOUT Between 0.6V to 5.5V

The LTM4624 is available with guaranteed operation over the -40°C to +125°C internal temperature range. The µModule regulator is available for immediate delivery from stock. Pricing starts at $5.95 each for 1,000 piece quantities. For more information, visit

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