Alternative Parts
Overview
Features and Benefits
- 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
Product Details
The LTC3526/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.
| Startup Voltage | Frequency | Burst Mode | Notes | |
| LTC3526 | 1V | 1MHz | Yes | Not Recommended For New Designs |
| LTC3526B | 1V | 1MHz | No | Not Recommended For New Designs |
| LTC3526-2 | 1V | 2MHz | Yes | Not Recommended For New Designs |
| LTC3526B-2 | 1V | 2MHz | No | Not Recommended For New Designs |
| LTC3526L | 0.85V | 1MHz | Yes | |
| LTC3526LB | 0.85V | 1MHz | No | |
| LTC3526L-2 | 0.85V | 2MHz | Yes | |
| LTC3526LB-2 | 0.85V | 2MHz | No |
APPLICATIONS
- Medical Instruments
- Flash-Based MP3 Players
- Noise Canceling Headphones
- Wireless Mice
- Bluetooth Headsets
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
-
R415 Reliability Data3/23/2018
Tools & Simulations
LTspice
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.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.
Models for the following parts are available in LTspice:
LTC3526
LTC3526-2
LTC3526B
LTC3526B-2
LTC3526L
LTC3526L-2
LTC3526LB
LTC3526LB-2
Design Resources
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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| LTC3526BEDC#TRMPBF | Material Declaration | Reliability Data | 6-Lead DFN (2mm x 2mm w/ EP) | |
| LTC3526BEDC#TRPBF | Material Declaration | Reliability Data | 6-Lead DFN (2mm x 2mm w/ EP) | |
| LTC3526EDC#TRMPBF | Material Declaration | Reliability Data | 6-Lead DFN (2mm x 2mm w/ EP) | |
| LTC3526EDC#TRPBF | Material Declaration | Reliability Data | 6-Lead DFN (2mm x 2mm w/ EP) | |
| Wafer Fabrication Data | R415 Reliability Data |
Support & Discussions
LTC3526 Discussions
Sample & Buy
Ordering FAQs
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Buy Now Pricing
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List Pricing
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Lead Times
Please see the latest communication from our CCO regarding lead times.
Sampling
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