LTC3884

RECOMMENDED FOR NEW DESIGNS

Dual Output PolyPhase Step-Down Controller with Sub-Milliohm DCR Sensing and Digital Power System Management

Analog Devices LTC3884 Product Info

10 February 2026 4

Features

PMBus/I²C Compliant Serial Interface
- Telemetry Read-Back Includes V_IN, I_IN, V_OUT, I_OUT, Temperature and Faults
- Programmable Voltage, Current Limit, Digital Soft-Start/Stop, Sequencing, Margining, OV/UV/OC
Sub-Milliohm DCR Current Sensing
Digitally Adjustable Loop Compensation Parameters
±0.5% Output Voltage Accuracy Over Temperature
Integrated Input Current Sense Amplifier
Internal EEPROM with ECC and Fault Logging
Integrated N-Channel MOSFET Gate Drivers (LTC3884)

Power Conversion

Wide V_IN Range: 4.5V to 38V
V_OUT Range: 0.5V to 3.5V (with Low DCR Setting); 0.5V to 5.5V (without Low DCR Setting)
Accurate PolyPhase^® Current Sharing for Up to 6 Phases
AEC-Q100 Qualified for Automotive Applications

Part details & applications

The LTC3884/LTC3884-1 are dual output PolyPhase DC/DC synchronous step-down switching regulator controllers with an I²C-based PMBus compliant serial interface. The controllers employ a constant-frequency current mode architecture, together with a unique scheme to provide excellent performance for sub-milliohm DCR applications. The LTC3884/LTC3884-1 are supported by the LTpowerPlay^® software development tool with graphical user interface (GUI).

Programmable loop compensation allows the controller to be compensated digitally. Switching frequency, channel phasing, output voltage, and device address can be programmed both by the digital interface as well as external configuration resistors. Additionally, parameters can be set via the digital interface or stored in EEPROM. Both outputs have independent power good indicators and FAULT function. The LTC3884 has integrated gate drivers.
The LTC3884-1 has three-state PWM pins to drive power blocks or DrMOS power stages.

APPLICATIONS

Telecom, Datacom, and Storage Systems
Industrial and Point-of-Load Applications

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