Analog Devices Inc

LTM4673 Quad Output μModule® Regulator

Analog Devices' quad output μModule regulator with digital power system management

Image of Analog Devices' LTM4673 Quad Output μModule® RegulatorADI's LTM4673 is a quad output, dual 12 A and dual 5 A, switching mode DC/DC step-down μModule (power module) regulator integrated with 4-channel power system manager used to sequence, trim (servo), margin, supervise, manage faults, provide telemetry, and create fault logs. Operating over an input voltage range of 4.5 V to 15 V, the LTM4673 supports an output voltage range of 0.6 V to 3.3 V for 12 A channels and 0.6 V to 5.5 V for 5 A channels. Only bulk input and output capacitors are needed.

The LTM4673’s 2-wire serial interface allows outputs to be precisely margined, tuned, and programmable sequenced up and down. An internal 16-bit ADC monitors and supervises input and all four output voltages, currents, and temperatures. Faults can be programmed for overcurrent and undercurrent, voltage and temperature threshold limits for four output channels, and over and undervoltage for the input.

Demonstration circuit DC2810A features the LTM4673: the wide input and output voltage range, high efficiency and power density, quad output DC/DC step-down μModule regulator with digital interface for control and monitoring.

Features
  • Quad outputs, dual 12 A and dual 5 A, step-down μModule regulator with digital interface
  • Wide input voltage range: 4.5 V to 15 V
  • Dual 12 ADC output from 0.6 V to 3.3 V
  • Dual 5 ADC output from 0.6 V to 5.5 V
  • ±0.5% total output voltage regulation with servo
  • ±5% current readback accuracy in 12 A channels
  • 400 kHz PMBus-compliant I2C serial interface
  • Integrated 16-Bit ΔΣ ADC
  • 16 mm × 16 mm × 4.72 mm BGA package
  • Accurate monitoring input and four output voltages, currents, and temperatures
  • Digital programmable output voltage trim, sequencing, and margining for each channel
  • Manage faults and warnings
  • Onboard EEPROM fault log record
  • Dual true differential sensing amplifier
  • Parallelable output for higher output current
  • Drop-in pin compatible with quad output LTM4671 non-PSM μModule regulator
Applications
  • Telecom, networking, and industrial equipment
  • Multi-rail point-of-load regulation
  • FPGAs, DSPs, and ASICs application

ICs

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
HIGH DENSITY QUAD OUTPUT MODULELTM4673EY#PBFHIGH DENSITY QUAD OUTPUT MODULE67 - Immediate$487.09View Details
HIGH DENSITY QUAD OUTPUT MODULELTM4673IY#PBFHIGH DENSITY QUAD OUTPUT MODULE90 - Immediate$526.68View Details

Evaluation Boards

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
INTERFACE MOD FOR LTPOWERPLAYDC1613AINTERFACE MOD FOR LTPOWERPLAY439 - Immediate$560.19View Details
EVAL BOARD FOR LTM4673DC2810AEVAL BOARD FOR LTM46732 - Immediate$582.00View Details
Published: 2022-06-17

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