DC1367A

Eval Board, Ltm4615 4A, 1.5A Step-Down Regulator

The demonstration circuit features LTM4615EV triple output µModule regulator consisting of two switch mode outputs and one LDO output. The LTM4615EV is a complete 4A dual output switching mode DC to DC power supply plus an additional 1.5A VLDO very low dropout linear regulator. Included in the IC package are the switching controllers, power FETs, inductors, a 1.5A regulator and all support components. The low profile package 2.82mm enables utilization of unused space on the bottom of PC boards for high density point of load regulation. Each LTM4615EV DC to DC converter has a separate input and enable pin. Its maximum load current is 4A for each switch mode channel and 1.5A for the VLDO channel. However the DC1367A is configured with the LDO input supply connected to he VOUT2 whose maximum output current decreases accordingly. Derating is necessary for certain VIN, VOUT and thermal conditions.

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Input voltage range from 2.5V to 5.5V

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Output voltage VOUT1 is 1.8V ±2%

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Output voltage VOUT2 is 1.2V ±2%

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Output voltage VO3LDO is 1.0V ±2%

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Maximum continuous output current of 4A DC at VOUT1, 4A DC at VOUT2 and 1.5A DC at VO3

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Default operating frequency of 1.25MHz

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82.8% channel efficiency

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81.7% channel 2 efficiency

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Output voltage tracking

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Programmable soft start