Dual 25A or Single 50A DC/DC μModule Regulator with 1% DC Accuracy

The LTM4650A-1 is a dual 25A or single 50A output switching mode step-down DC/DC μModule® (micromodule) regulator with ±1% total DC output error. Included in the package are the switching controllers, power FETs, inductors and all supporting components. Operating from an input voltage range of 4.5V to 16V, the LTM4650A-1 supports two outputs with an output voltage range of 0.6V to 5.5V, each set by a single external resistor. Its high efficiency design delivers up to 25A continuous current for each output. Only a few input and output capacitors are needed. Adjustable control loop compensation allows for fast transient response to minimize output capacitance when powering FPGAs, ASICs, and processors.

Fault protection features include overvoltage and overcurrent protection. The LTM4650A-1 is offered in 16mm × 16mm × 5.01mm BGA package.

VIN Range

VOUT Range

IOUT

Compensation

DC Vout Accuracy

LTM4650

4.5V to 15V

0.6V to 1.8V

25A × 2

Internal

1.5%

LTM4650-1B

4.5V to 15V

0.6V to 1.8V

25A × 2

External

1.5%

LTM4650-1A

4.5V to 15V

0.6V to 1.8V

25A × 2

External

0.8%

LTM4650A

4.5V to 16V

0.6V to 5.5V

25A × 2

Internal

1%

LTM4650A-1

4.5V to 16V

0.6V to 5.5V

25A × 2

External

1%

Applications

* Telecom and Networking Equipment

* Storage and ATCA Cards

* Industrial Equipment

* Dual 25A or Single 50A Output

* Input Voltage Range: 4.5V to 16V

* Output Voltage Range: 0.6V to 5.5V

* ±1% Maximum Total DC Output Error Over Line, Load and Temperature

* Higher Light Load Efficiency and Wider VOUT Range Than LTM4650-1

* Adjustable Control Loop Compensation

* Differential Remote Sense Amplifier

* Current Mode Control/Fast Transient Response

* Multiphase Parallel Current Sharing Up to 300A