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LT1304
Micropower DC/DC Converters with Low-Battery Detector Active in Shutdown
Overview
Features and Benefits
- 5V at 200mA from Two Cells
- 10µA Quiescent Current in Shutdown
- Operates with VIN as Low as 1.5V
- Low-Battery Detector Active in Shutdown
- Low Switch VCESAT: 370mV at 1A Typical
- 120µA Quiescent Current in Active Mode
- Switching Frequency Up to 300kHz
- Programmable Peak Current with One Resistor
- 8-Lead SO Package
Product Details
The LT1304 is a micropower step-up DC/DC converter ideal for use in small, low voltage, battery-operated systems. The devices operate from a wide input supply range of 1.5V to 8V. The LT1304-3.3 and LT1304-5 generate regulated outputs of 3.3V and 5V and the adjustable LT1304 can deliver output voltages up to 25V. Quiescent current, 120µA in active mode, decreases to just 10µA in shutdown with the low-battery detector still active. Peak switch current, internally set at 1A, can be reduced by adding a single resistor from the ILIM pin to ground. The high speed operation of the LT1304 allows the use of small, surface-mountable inductors and capacitors. The LT1304 is available in an 8-lead SO package.
Applications
- 2-, 3-, or 4-Cell to 5V or 3.3V Step-Up
- Portable Instruments
- Bar Code Scanners
- Palmtop Computers
- Diagnostic Medical Instrumentation
- Personal Data Communicators/Computers
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.
Evaluation Kits (1)
Documentation
Reliability Data (1)
Application Notes (1)
Evaluation Kit Manuals (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
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.
