LTC7822-1

RECOMMENDED FOR NEW DESIGNS

Automotive Dual-Phase Hybrid Step-Down Synchronous Controller with Load Current Monitor

Analog Devices LTC7822-1 Product Info

10 February 2026 8

Features

98.4% Peak Efficiency in 48V to 12V Application
97.7% Full Load Efficiency at 1kW Output Power
Wide V_IN Range: 19V to 90V (100V ABS Max)
Output Voltage Up to 35V
10V Gate Drive for Optimal Efficiency
Output Current Monitor
EXTV_CC Input for Improved Die Temperature
±1.25% Output Voltage Accuracy

R_SENSE or Inductor DCR Current Sensing
Phase-Lockable Fixed Frequency 150kHz to 1.5MHz
CLKOUT Pin for Multi-ICs Parallel Operation
Soft Switching and Low EMI Performance
Overtemperature and OC/OV Protection
46-Lead (48-Lead Body) 7mm x 7mm Plastic Side-Solderable QFN
AEC-Q100 Qualified for Automotive Applications

Part details & applications

The LTC7822-1 uses an ADI-proprietary architecture that merges a soft switching charge pump topology with a dual-phase interleaved synchronous step-down converter to provide superior efficiency and low EMI performance compared to traditional switching architectures. In a typical 48V to 12V application, up to 98.4% efficiency is attainable with the LTC7822-1.

With reduced switching losses, the hybrid converter allows higher switching frequency without sacrificing much efficiency. The proprietary dual-phase topology greatly reduces the capacitor number in the charge pump stage compared to the single-phase hybrid converters. LTC7822-1 supports both standard discrete inductors and coupled inductors.

The LTC7822-1 can be easily paralleled to provide higher output current with its accurate current sharing capability and frequency synchronization function. Current monitor provides an analog voltage reflecting the load current.

APPLICATIONS

Automotive
Intermediate Bus Converters
High Current Distributed Power Systems
Telecom, Datacom, and Storage Systems

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