Power Management Switching Regulator Step-Up (Boost) Regulators Micropower Boost
Power Management Switching Regulator Step-Up (Boost) Regulators Internal Power Switch Boost

For New Designs

LTC3526L/LTC3526LB - 550mA 1MHz Synchronous Step-Up DC/DC Converters in 2mm × 2mm DFN

Also_Recommend

LTC2935 - Ultra-Low Power Supervisor with Power-Fail Output, Selectable Thresholds

LTC3526 - 500mA 1MHz Synchronous Step-Up DC/DC Converters in 2mm x 2mm DFN

Features

  • Delivers 3.3V at 100mA from a Single Alkaline/
  • NiMH Cell or 3.3V at 200mA from Two Cells
  • VIN Start-Up Voltage: 850mV
  • 1.6V to 5.25V VOUT Range
  • Up to 94% Efficiency
  • Output Disconnect
  • 1MHz Fixed Frequency Operation
  • VIN > VOUT Operation
  • Integrated Soft-Start
  • Current Mode Control with Internal Compensation
  • Automatic Burst Mode® Operation with 9μA Quiescent Current (LTC3526)
  • Low Noise PWM Operation (LTC3526B)
  • Internal Synchronous Rectifier
  • Logic Controlled Shutdown (IQ < 1μA)
  • Anti-Ringing Control
  • Low Profile (2mm × 2mm × 0.75mm) DFN Package

Typical Application

LTC3526 Typical Application
LTC3526 Typical Application

Description

The LTC®3526/LTC3526B 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 an 850mV 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 LTC3526 features automatic Burst Mode operation at light load conditions, while the LTC3526B features continuous switching at light loads. Anti-ringing control circuitry also reduces EMI concerns by damping the inductor in discontinuous mode. Additional features include a low shutdown current of under 1μA and thermal shutdown.

The LTC3526/LTC3526B are housed in a 2mm × 2mm × 0.75mm DFN package.

For new designs, we recommend the LTC3526L/LTC3526LB.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

DFN-6

LTC3526 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC3526BEDC DFN 6 E $2.50 View
LTC3526BEDC#PBF DFN 6 E $2.50 View
LTC3526BEDC#TR DFN 6 E $2.50 $1.75 View
LTC3526BEDC#TRM DFN 6 E $2.50 $1.80 View
LTC3526BEDC#TRMPBF DFN 6 E $2.50 $1.80 View
LTC3526BEDC#TRPBF DFN 6 E $2.50 $1.75 View
LTC3526BEDC-2 DFN 6 E $2.50 View
LTC3526BEDC-2#PBF DFN 6 E $2.50 View
LTC3526BEDC-2#TR DFN 6 E $2.50 $1.75 View
LTC3526BEDC-2#TRM DFN 6 E $2.50 $1.80 View
LTC3526BEDC-2#TRMPBF DFN 6 E $2.50 $1.80 View
LTC3526BEDC-2#TRPBF DFN 6 E $2.50 $1.75 View
LTC3526EDC DFN 6 E $2.50 View
LTC3526EDC#PBF DFN 6 E $2.50 View
LTC3526EDC#TR DFN 6 E $2.50 $1.75 View
LTC3526EDC#TRM DFN 6 E $2.50 $1.80 View
LTC3526EDC#TRMPBF DFN 6 E $2.50 $1.80 View
LTC3526EDC#TRPBF DFN 6 E $2.50 $1.75 View
LTC3526EDC-2 DFN 6 E $2.50 View
LTC3526EDC-2#PBF DFN 6 E $2.50 View
LTC3526EDC-2#TR DFN 6 E $2.50 $1.75 View
LTC3526EDC-2#TRM DFN 6 E $2.50 $1.80 View
LTC3526EDC-2#TRMPBF DFN 6 E $2.50 $1.80 View
LTC3526EDC-2#TRPBF DFN 6 E $2.50 $1.75 View
LTC3526LBEDC#PBF DFN 6 E $2.64 View
LTC3526LBEDC#TRMPBF DFN 6 E $2.64 $1.90 View
LTC3526LBEDC#TRPBF DFN 6 E $2.64 $1.85 View
LTC3526LBEDC-2#PBF DFN 6 E $2.64 View
LTC3526LBEDC-2#TRMPBF DFN 6 E $2.64 $1.90 View
LTC3526LBEDC-2#TRPBF DFN 6 E $2.64 $1.85 View
LTC3526LEDC#PBF DFN 6 E $2.64 View
LTC3526LEDC#TRMPBF DFN 6 E $2.64 $1.90 View
LTC3526LEDC#TRPBF DFN 6 E $2.64 $1.85 View
Buy Now • Request Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology demo boards are offered free of charge to qualified customers. Contact your local sales office or distributor to request a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Click here to view our complete list of demo boards

Applications

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

Simulate

LTspice IV is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. To download LTspice IV and other FREE simulation tools, please visit our Design Simulation page.

To launch a ready to run LTspice demonstration circuit for this part:

To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.

Related models available in LTspice IV
LTC3526-2
LTC3526
LTC3526B-2
LTC3526B
LTC3526L-2
LTC3526L
LTC3526LB-2
LTC3526LB

Technical Support