Analog Devices Inc. LTM4683 μModule® DC-DC Regulator

Analog Devices Inc. LTM4683 μModule® DC-DC Regulator is a quad 31.25A or single 125A step-down μModule® (power micromodule) DC-DC regulator featuring remote configurability and telemetry monitoring of power management parameters over PMBus.

The LTM4683’s 2-wire serial interface allows outputs to be margined, tuned and ramped up and down at programmable slew rates with sequencing delay times. True input current sense, output power, output currents and voltages, temperatures, uptime, and peak values are readable. Custom configuration of the EEPROM contents is not required. At start-up, switching frequency, output voltages, and channel phase angle assignments can be set by pin-strapping resistors.

The Analog Devices Inc. LTM4683 is offered in a 15mm × 22mm × 5.71mm BGA package with a RoHS-compliant terminal finish.

Features

Quad digitally adjustable analog loops with digital interface for control and monitoring
4.5V to 14V wide input voltage range
0.3V to 0.7V output voltage range
±0.5% DC output accuracy at 0.7V
±4.5% current readback accuracy at 0°C to 125°C
Optimized for low output voltage ranges
400kHz PMBus-compliant I²C serial interface
Supports telemetry polling rates up to 125Hz
Integrated 16-bit ΔΣ ADC

Parallel and current share multiple modules
15mm × 22mm × 5.71mm BGA package
Readable data
- Input and output voltages, currents, and temperatures
- Running peak values, uptime, faults, and warnings
- Onboard EEPROM fault log record
Writable data and configurable parameters
- Output voltage, voltage sequencing, and margining
- Digital soft-start/soft-stop ramp, program analog loop
- OV/UV/OT, UVLO, frequency and phasing

Applications

Multi-rail processor power
Configurable core power

Analog Devices Inc. LTM4683 μModule® DC-DC Regulator

Features

Applications

Typical Application

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