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The LTM4676AEY is a single/dual-channel DC/DC step-down (μModule®) micro-module launched by Analog Devices (ADI), supporting digital power management system management. The following are its core features:

Dual-channel, fast, analog loop, controlled and monitored through a digital interface

Wide input voltage range: 4.5V to 26.5V

Output voltage range: 0.5V to 5.5V

Maximum DC output error across the full temperature range: ±0.5%

Current readback accuracy: ±2.5% (under 10A load)

The 400kHz PMBus is compatible with the I2C serial interface

Integrated 16-bit ΔΣ ADC

Supports telemetry polling rates up to 125Hz

Constant frequency current mode control

Multiple modules can be connected in parallel and share the current

Supports all 7-bit slave addresses

Compatible with dual-channel 18A LTM4677 pins

16mm x 16mm x 5.01mm BGA package

Readable data

Input and output voltage, current and temperature

Peak operating hours, uptime, faults and warnings

On-board EEPROM fault log recording with ECC function

Writable data and configurable parameters

Output voltage, voltage timing control and margin regulation

Digital soft start-stop ramp

OV/UV/OT, UVLO, frequency and phase determination

Details of LTM4676A

The LTM4676AEY is a dual-channel 13A or single-channel 26A step-down µModule® DC/DC regulator with a conduction time of 40ms. The LTM4676AEY can remotely configure and remotely monitor power management parameters via PMBus (an Open Standard Digital interface protocol based on I2C). The LTM4676AEY includes a fast analog control loop, a precision mixed-signal circuit, an EEPROM, a power MOSFET, inductors and matching components.

By using the dual-wire serial interface of the LTM4676AEY, margin adjustment, fine-tuning, and oblique rise and oblique fall of the output can be performed with programmable slew rate and timing monitoring delay time. Input and output current and voltage, output power, temperature, operating time and peak value are readable. At startup, the output voltage, switching frequency and channel phase Angle distribution of the LTM4676AEY can be set through the pin connection resistor.

The LTM4676AEY is pin-compatible with the LTM4676 and is an improved performance version of the latter.

Application scenarios

The LTM4676AEY is suitable for high-precision power distribution systems, supporting multi-module parallel current sharing. It can be configured with voltage timing and margin regulation to achieve soft start/stop ramp control. ‌

Technical parameters

Product: LTM4676AEY

Type: Non-isolated PoL module

Output number: 2

Voltage - Input (minimum value) : 4.5V

Voltage - Input (maximum value) : 26.5V

Voltage-output ratio: 0.5 to 5.4V

Voltage - Output 2:0.5-5.4V

Voltage - Output 3: -

Current - Output (maximum) : 13A, 13A

Application: ITE (Business)

Features: OCP, OTP, OVP, SCP, UVLO

Operating temperature: -40°C to 125°C

Efficiency: -

Installation type: Surface mount type

Packaging/Housing: 144-BGA

Contact Mingjiada electronics (www.hkmjd.com) immediately for the LTM4676AEY exclusive quotation plan.