LTC3528B-2

RECOMMENDED FOR NEW DESIGNS

1A, 2MHz Synchronous Step-Up DC/DC Converter in 2mm × 3mm DFN

Part Models: 2
1ku List Price: Starting From $2.35

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Part Details

Delivers 3.3V at 200mA from a Single Alkaline/NiMH Cell or 3.3V at 400mA from Two Cells
V_IN Start-Up Voltage: 700mV
0.50V to 5.5V Input Range
1.6V to 5.25V V_OUT Range
Up to 94% Efﬁciency
Output Disconnect
2MHz Fixed Frequency Operation
V_IN > V_OUT Operation
Integrated Soft-Start
Current Mode Control with Internal Compensation
Low Noise PWM Operation
Internal Synchronous Rectiﬁer
Logic Controlled Shutdown: <1μA
Anti-Ringing Control
Low Proﬁle (2mm × 3mm × 0.75mm) DFN Package

The LTC3528B-2 is a synchronous, ﬁxed frequency step-up DC/DC converter with output disconnect. High efficiency synchronous rectification, in addition to a 700mV start-up voltage and operation down to 500mV once started, provides longer run-time for single or multiple cell battery-powered products.

A switching frequency of 2MHz minimizes solution foot- print by allowing the use of tiny, low proﬁle inductors and ceramic capacitors. The current mode PWM is internally compensated, simplifying the design process. The LTC3528B-2 features continuous switching at light loads. Anti-ringing circuitry reduces EMI by damping the inductor in discontinuous mode. Additional features include a low shutdown current, open-drain power good output, short- circuit protection and thermal overload protection.

The LTC3528B-2 is offered in an 8-lead 2mm × 3mm × 0.75mm DFN package.


	Frequency	Features
LTC3528	1MHz	Yes
LTC3528B	1MHz	No
LTC3528-2	2MHz	Yes
LTC3528B-2	2MHz	No

Applications

Medical Instruments
Flash-Based MP3 Players
Noise Canceling Headphones
Wireless Mice
Bluetooth Headsets

Part Models: 2
1ku List Price: Starting From $2.35

Documentation

Data Sheet 1

LTC3528B-2: 1A, 2MHz Synchronous Step-Up DC/DC Converter in 2mm × 3mm DFN Data Sheet 01/04/2011

Reliability Data 1

R457 Reliability Data 03/26/2018

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC3528BEDDB-2#TRMPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3528BEDDB-2#TRPBF	8-Lead DFN (3mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Tools & Simulations

LTspice 1

LTC3528B-2 - Step-Up (Boost) Regulators

Models for the following parts are available in LTspice:

LTC3528
LTC3528-2
LTC3528B
LTC3528B-2

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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