LT8337

RECOMMENDED FOR NEW DESIGNS

28V, 5A Low IQ Synchronous Step-Up Silent Switcher with PassThru

Analog Devices LT8337 Product Info

10 February 2026 6

Features

Silent Switcher^® Architecture
Ultralow EMI Emissions
Optional Spread Spectrum Frequency Modulation
Integrated 28V, 5A Power Switches
Wide Input Voltage Range: 2.7V to 28V
Output Voltage Programmable Up to 26V
Low V_IN Pin Quiescent Current
0.3μA in Shutdown
4μA in Burst Mode^® Operation (LT8337)
15μA in PassThru^™ (LT8337)

100% Duty Cycle Capability for Synchronous MOSFET
External Compensation: Fast Transient Response (LT8337-1)
Power Good Monitor (LT8337)
Adjustable and Synchronizable: 300kHz to 3MHz
Pulse-Skipping or Burst Mode Operation at Light Load
Small 16-Lead (3mm × 3mm) LQFN Package

Part details & applications

The LT8337/LT8337-1 is a low I_Q, synchronous step-up DC/DC converter. It features Silent Switcher architecture and optional spread spectrum frequency modulation (SSFM) to minimize EMI emissions while delivering high efficiencies at high switching frequencies.

The wide input/output voltage range, low V_IN pin quiescent current in Burst Mode operation, and 100% duty-cycle capability for the synchronous MOSFET in PassThru operation (V_IN > V_OUT) makes the LT8337/LT8337-1 ideally suited for battery-powered systems and general purpose step-up applications.

The LT8337/LT8337-1 integrates 28V, 5A power switches, operating at a fixed switching frequency programmable between 300kHz and 3MHz and synchronizable to an external clock. The LT8337/LT8337-1 features output soft-start and output overvoltage lockout.

The LT8337-1 allows external compensation via the V_C pin for fast transient response. The LT8337 offers an output power good flag via the PG pin.

Applications

Battery-Powered Systems
General Purpose Step-Up

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