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

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 5VIN or supplying 5VAUX to SVIN 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

* Dual, Fast, Analog Loops with Digital Interface for Control and Monitoring

* 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