Power Supplies Linear introduces tiny military spec 4A power supply

Power Supplies Linear introduces tiny military spec 4A power supply

2013/08/19

Linear Technology has squeezed a 14V, 4A step-down DC-DC controller  design to a PCB area of just 1 square cm, including a few passive components.

On a doubled-sided board the design can be as small as 0.5cm square, said the company.

The LTM4624 includes the DC/DC controller, power switches, inductor and compensation in a single package.

According to the supplier, only two external ceramic capacitors (1206 case size) and a resistor (0603 or smaller case size) are required for operation.

The device operates from a 4V to 14V input supply, delivering a regulated output adjustable between 0.6V to 5.5V.

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.

The LTM4624, which comes in a BGA package size of 6.25 x 6.25 x 5.01mm, has a military high-rel operating range of -40°C to +125°C internal temperature range.

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