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LTC3526L-2
550mA 2MHz Synchronous Step-Up DC/DC Converters in 2mm × 2mm DFN
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: 680mV
- 1.5V to 5.25V VOUT Range
- Up to 94% Efficiency
- Output Disconnect
- 2MHz Fixed Frequency Operation
- VIN > VOUT Operation
- Integrated Soft-Start
- Current Mode Control with Internal Compensation
- Burst Mode® Operation with 9μA IQ (LTC3526L-2)
- Low Noise PWM Operation (LTC3526LB-2)
- Internal Synchronous Rectifier
- Logic Controlled Shutdown (IQ < 1μA)
- Anti-Ring Control
- Low Profile (2mm × 2mm × 0.75mm) 6-Lead DFN Package
Product Details
The LTC3526L-2/LTC3526LB-2 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 a 680mV start-up voltage and operation down to 500mV once started.
A switching frequency of 2MHz 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 LTC3526L-2 features Burst Mode operation at light load conditions allowing it to maintain high efficiency over a wide range of load. The LTC3526LB-2 features fixed frequency operation for low noise applications. Anti-ring circuitry reduces EMI by damping the inductor in discontinuous mode. Additional features include a low shutdown current of under 1μA and thermal shutdown.
The LTC3526L-2/LTC3526LB-2 are housed in a 2mm × 2mm × 0.75mm DFN package.
| 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
- Noise Canceling Headphones
- Wireless Mice
- Bluetooth Headsets
Product Categories
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (2)
Documentation
Reliability Data (1)
User Guides (1)
Tools & Simulations
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Design Resources
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Support & Discussions
LTC3526L-2 Discussions
Sample & Buy
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 Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
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Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.