LTM4686-1

RECOMMENDED FOR NEW DESIGNS

Ultrathin Dual 10A or Single 20A μModule Regulator with Digital Power System Management

Analog Devices LTM4686-1 Product Info

10 February 2026 5

Features

Dual, Fast, Analog Loops with Digital Interface for Control and Monitoring
Wide Input Voltage Range: 4.5V to 17V Standalone, 2.375V to 17V with Aux 5V Bias
Output Voltage Range: 0.5V to 3.6V
±0.5% Maximum DC Output Error Over Temperature
10A DC Typical, 12A Peak Output Current, per Channel
±5% Current Readback Accuracy at 10A Load
400kHz PMBus-Compliant I²C Serial Interface
Integrated 16-Bit ∆Σ 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
Drop-In Pin-Compatible to Dual 9A LTM4675 and Dual 13A LTM4676A and Dual 18A LTM4677
16mm × 11.9mm × 1.82mm LGA 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 LTM4686 is a dual 10A (12A Peak) or single 20A (24A Peak) step-down µModule^® (micromodule) DC/DC regulator with 39ms 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 LTM4686 is comprised of fast analog control loops, precision mixed-signal circuitry, EEPROM, power MOSFETs, inductors and supporting components.

The LTM4686’s 2-wire serial interface enables voltage margining and sequencing, and telemetry readback of currents, voltages, power, temperature, uptime and peak values. Pin-strap resistors configure start-up settings. The LTpowerPlay^™ GUI, DC1613 USB-to-PMBus converter, DC2086 programming adapter and demo kits are available. Applications running from 5V_IN or supplying 5V_AUX to SV_IN should use LTM4686-1. Otherwise, use LTM4686.

Pb-free and RoHS compliant, the LTM4686 is available in a 16mm × 11.9mm × 1.82mm LGA package.

Applications

System Optimization in Prototype and Production

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