The LTM®4676A 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.
