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LTC3528

Features: Delivers 3.3V at 200mA from a Single Alkaline/NiMH Cell or 3.3V at 400mA from Two Cells VIN Start-Up Voltage: 700mV 1.6V to 5.25V VOUT Range Up to 94% Effi ciency Output Disconnect 1MHz Fixed Frequency Operation VIN > VOUT Operation Integrated Soft-Start Current Mode Control with Int...

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SeekIC No. : 004402266 Detail

LTC3528: Features: Delivers 3.3V at 200mA from a Single Alkaline/NiMH Cell or 3.3V at 400mA from Two Cells VIN Start-Up Voltage: 700mV 1.6V to 5.25V VOUT Range Up to 94% Effi ciency Output Disconnect 1MHz F...

LTC3528 Data Sheet

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Part Number:
LTC3528
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

Delivers 3.3V at 200mA from a Single Alkaline/NiMH Cell or 3.3V at 400mA from Two Cells
VIN Start-Up Voltage: 700mV
1.6V to 5.25V VOUT Range
Up to 94% Effi ciency
Output Disconnect
1MHz Fixed Frequency Operation
VIN > VOUT Operation
Integrated Soft-Start
Current Mode Control with Internal Compensation
Burst Mode® Operation with 12A Quiescent Current (LTC3528)
Low Noise PWM Operation (LTC3528B)
Internal Synchronous Rectifi er
Logic Controlled Shutdown: <1A
Anti-Ringing Control
Low Profi le (3mm * 2mm * 0.75mm) DFN Package


Application

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


Pinout

Connection Diagram


Specifications

VIN Voltage .............................................. 0.3V to 6V
SW Voltage
DC ............................................................ 0.3V to 6V
Pulsed < 100ns ........................................ 0.3V to 7V
SHDN, FB Voltage ..................................... 0.3V to 6V
VOUT ........................................................ 0.3V to 6V
PGOOD ..................................................... 0.3V to 6V
Operating Temperature Range
(Notes 2, 5) ........................................... 40 to 85
Storage Temperature Range ................ 65to 125


Description

The LTC®3528/LTC3528B are synchronous, fi xed frequency step-up DC/DC converters with output disconnect. High effi ciency synchronous rectifi cation, 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 1MHz minimizes solution footprint by allowing the use of tiny, low profi le inductors and ceramic capacitors. The current mode PWM is internally compensated, simplifying the design process. The LTC3528 enters Burst Mode operation at light loads, while the LTC3528B 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, shortcircuit protection and thermal overload protection.

The LTC3528/LTC3528B are offered in an 8-lead 3mm × 2mm × 0.75mm DFN package.




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