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LTC3528B-2

Linear
Part Number LTC3528B-2
Manufacturer Linear
Description 2MHz Synchronous Step-Up DC/DC Converter
Published Apr 16, 2016
Detailed Description FEATURES n Delivers 3.3V at 200mA from a Single Alkaline/ NiMH Cell or 3.3V at 400mA from Two Cells n VIN Start-Up Vol...
Datasheet PDF File LTC3528B-2 PDF File

LTC3528B-2
LTC3528B-2

Overview
FEATURES n Delivers 3.
3V at 200mA from a Single Alkaline/ NiMH Cell or 3.
3V at 400mA from Two Cells n VIN Start-Up Voltage: 700mV n 0.
50V to 5.
5V Input Range n 1.
6V to 5.
25V VOUT Range n Up to 94% Efficiency n Output Disconnect n 2MHz Fixed Frequency Operation n VIN > VOUT Operation n Integrated Soft-Start n Current Mode Control with Internal Compensation n Low Noise PWM Operation n Internal Synchronous Rectifier n Logic Controlled Shutdown: <1µA n Anti-Ringing Control n Low Profile (2mm × 3mm × 0.
75mm) DFN Package APPLICATIONS n Medical Instruments n Flash-Based MP3 Players n Noise Canceling Headphones n Wireless Mice n Bluetooth Headsets LTC3528B-2 1A, 2MHz Synchronous Step-Up DC/DC Converter in 2mm × 3mm DFN DESCRIPTION The LTC®3528B-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 footprint 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.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION 2.
2µH VIN 1.
8V TO 3.
2V 4.
7µF OFF ON SW VIN VOUT LTC3528B-2 PGOOD SHDN GND FB 499k 287k 68pF VOUT 3.
3V 400mA 10µF 35282 TA01a EFFICIENCY...


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