LTM4676A

RECOMMENDED FOR NEW DESIGNS

Dual 13A or Single 26A μModule Regulator with Digital Power System Management

Analog Devices LTM4676A Product Info

10 February 2026 6

Features

Dual, Fast, Analog Loops with Digital Interface for Control and Monitoring
Wide Input Voltage Range: 4.5V to 26.5V
Output Voltage Range: 0.5V to 5.5V
±0.5% Maximum DC Output Error Over Temperature
±2.5% Current Readback Accuracy at 10A Load
400kHz PMBus-Compliant I²C Serial Interface
Integrated 16-Bit ΔΣ ADC
Supports Telemetry Polling Rates Up to 125Hz
Constant Frequency Current Mode Control
Parallel and Current Share Multiple Modules
All 7-Bit Slave Addresses Supported
Pin-Compatible to Dual 18A LTM4677
16mm × 16mm × 5.01mm BGA Package

Readable Data:

Input and Output Voltages, Currents, and Temperatures
Running Peak Values, Uptime, Faults and Warnings
Onboard EEPROM Fault Log Record with ECC

Writable Data and Configurable Parameters:

Output Voltage, Voltage Sequencing and Margining
Digital Soft-Start/Stop Ramp
OV/UV/OT, UVLO, Frequency and Phasing

Part details & applications

The LTM4676A is a dual 13A or single 26A step-down µModule^® (micromodule) DC/DC regulator with 40ms turn-on time. It features remote configurability and telemetry-monitoring of power management parameters over PMBus— an open standard I²C-based digital interface protocol . The LTM4676A is comprised of fast analog control loops, precision mixed-signal circuitry, EEPROM, power MOSFETs, inductors and supporting components.

The LTM4676A’s 2-wire serial interface allows outputs to be margined, tuned and ramped up and down at programmable slew rates with sequencing delay times. Input and output currents and voltages, output power, temperatures, uptime and peak values are readable. At start-up, output voltages, switching frequency, and channel phase angle assignments can be set by pin-strapping resistors. The LTpowerPlay^™ GUI and DC1613 USB-to-PMBus converter and demo kits are available.

The LTM4676A is pin-compatible and the improved performance version of the LTM4676.

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Part Number	Turn-on Start-up Time (MAX) (ms)	V_IN Range (V)	V_OUT Range (V)	Pin-compatible
LTM4676	170	4.5 to 26.5