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LTC3525L-3
400mA Micropower Synchronous Step-Up DC/DC Converter with Output Disconnect
Overview
Features and Benefits
- Start-Up at 0.7V Typical, 0.88V Guaranteed
- Up to 95% Efficiency
- Output Disconnect and Inrush Current Limit
- 3V Fixed Output Voltage
- Delivers 65mA at 3V from a 1V Input or 160mA from a 1.8V Input
- Burst Mode® Operation: IQ = 7μA
- VIN: 0.5V to 4.5V
- Only Three External Components
- VIN > VOUT Operation
- <1μA Shutdown Current
- Anti-Ringing Control
- Short-Circuit and Overtemperature Protection
- Tiny 6-Pin SC70 Package
Product Details
The LTC3525L-3 is a high efficiency synchronous step-up DC/DC converter with output disconnect that can start up with an input as low as 0.7V. It offers a compact, high efficiency alternative to charge pumps in single cell or dual cell alkaline applications. Only three small external components are required. The LTC3525L-3 generates a fixed 3V output voltage.
The device includes a 0.5Ω N-channel MOSFET switch and a 0.85Ω P-channel synchronous rectifier. Peak switch current ranges from 150mA to 400mA, depending on load, providing enhanced efficiency. Quiescent current is an ultralow 7μA, maximizing battery life in portable applications.
Other features include <1μA shutdown current, anti-ringing control and thermal shutdown. The LTC3525L-3 is available in a tiny 6-pin SC70 package.
| Vout | Min Startup Voltage | Features | |
| LTC3525-3/3.3/5 | 3V/3.3V/5V | 1V | Output Disconnect |
| LTC3525D-3.3 | 3.3V | 0.85V | Pass Through Mode |
| LTC3525L-3 | 3V | 0.85V | Output Disconnect |
Applications
- MP3 Players
- Portable Instruments
- Glucose Meters
- Digital Cameras
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.
Documentation
Reliability Data (1)
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.
Models for the following parts are available in LTspice:
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.
Support & Discussions
LTC3525L-3 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.