LTM4643

RECOMMENDED FOR NEW DESIGNS

Ultrathin Quad μModule Regulator with Configurable 3A Output Array

Analog Devices LTM4643 Product Info

10 February 2026 5

Features

Quad Output Step-Down µModule^® Regulator with 3A per Output
Wide Input Voltage Range: 4V to 20V
- 2.375V to 20V with External Bias
0.6V to 3.3V Output Voltage
3A DC Output Current Each Channel
±1.5% Total Output Voltage Regulation
Current Mode Control, Fast Transient Response

Parallelable for Higher Output Current
Output Voltage Tracking
Internal Temperature Sensing Diode Output
External Frequency Synchronization
Overvoltage, Current and Temperature Protection
9mm × 15mm × 1.82mm LGA and 9mm × 15mm × 2.42mm BGA Packages

Part details & applications

The LTM4643 is a quad DC/DC step-down µModule (power module) regulator with 3A per output. Outputs can be paralleled in an array for up to 12A capability. Included in the package are the switching controllers, power FETs, inductors and support components. Operating over an input voltage range of 4V to 20V or 2.375V to 20V with an external bias supply, the LTM4643 supports an output voltage range of 0.6V to 3.3V each set by a single external resistor. Its high efficiency design delivers 3A continuous output current per channel. Only bulk input and output capacitors are needed.

Fault protection features include overvoltage, overcurrent and overtemperature protection. The LTM4643 is offered in a 9mm ×15mm × 1.82mm LGA and 9mm × 15mm × 2.42mm BGA packages with SnPb (BGA) or RoHS compliant terminal finish.

Applications

FPGAs, GPUs and ASICs Applications
PCIe and Backside PCB Mounting

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