LTC3526L

RECOMMENDED FOR NEW DESIGNS

550mA 1MHz Synchronous Step-Up DC/DC Converters in 2mm × 2mm DFN

Analog Devices LTC3526L Product Info

10 February 2026 8

Features

Delivers 3.3V at 100mA from a Single Alkaline/NiMH Cell or 3.3V at 200mA from Two Cells
V_IN Start-Up Voltage: 680mV
1.5V to 5.25V V_OUT Range
Up to 94% Efficiency
Output Disconnect
1MHz Fixed Frequency Operation
V_IN > V_OUT Operation
Integrated Soft-Start

Current Mode Control with Internal Compensation
Burst Mode^® Operation with 9μA I_Q (LTC3526L)
Low Noise PWM Operation (LT3526LB)
Internal Synchronous Rectifier
Logic Controlled Shutdown (I_Q < 1μA)
Anti-Ring Control
Low Profile (2mm × 2mm × 0.75mm) DFN-6 Package

Part details & applications

The LTC3526L/LTC3526LB are synchronous, fixed frequency step-up DC/DC converters with output disconnect. Synchronous rectification enables high efficiency in the low profile 2mm × 2mm DFN package. Battery life in single AA/AAA powered products is extended further with a 680mV start-up voltage and operation down to 500mV once started.

A switching frequency of 1MHz minimizes solution footprint by allowing the use of tiny, low profile inductors and ceramic capacitors. The current mode PWM design is internally compensated, reducing external parts count. The LTC3526L features Burst Mode operation at light load conditions allowing it to maintain high efficiency over a wide range of load. The LTC3526LB features fixed frequency operation for low noise applications. Anti-ring circuitry reduces EMI by damping the inductor in discontinuous mode. Additional features include a low shutdown current of under 1μA and thermal shutdown.

The LTC3526L/LTC3526LB are housed in a 2mm × 2mm × 0.75mm DFN package.


	Startup Voltage	Frequency	Burst Mode	Notes
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