LINEAR TECHNOLOGY - LT1303 LT1303-5 Data Sheet manual specifications guide User's Manual
Summary
These micropower DC/DC converters are engineered for ultra-low power applications requiring efficient voltage boosting from low-voltage batteries (as low as 1.8V up to 5V). Featuring exceptionally low quiescent current and integrated low-battery detection, the LT1303 series maintains stable performance while significantly extending battery life in portable electronics. The accompanying manual provides comprehensive technical specifications, typical application data, and electrical characteristics necessary for integrating this highly efficient component into designs such as panel drivers, PDAs, and miniature instruments that demand reliable operation in constrained spaces.
Page 1 Text Content
LT1303/LT1303-5
Micropower High Efficiency DC/DC Converters with Low-Battery Detector Adjustable and Fixed 5V
FEATURES DESCRIPTION
5V at 200m A from a 2V Input The LT®1303/LT1303-5 are micropower step-up high Supply Voltage As Low As 1.8V efficiency DC/DC converters using Burst Mode TM opera- Up to 88% Efficiency tion. They are ideal for use in small, low-voltage battery- 120µA Quiescent Current operated systems. The LT1303-5 accepts an input voltage Low-Battery Detector between 1.8V and 5V and converts it to a regulated 5V. The Low VCESAT Switch: 170m V at 1A Typ LT1303 is an adjustable version that can supply an output Uses Inexpensive Surface Mount Inductors voltage up to 25V. Quiescent current is only 120µA from 8-Lead PDIP or SO Package the battery and the shutdown pin further reduces current
to 10µA. The low-battery detector provides an open- collector output that goes low when the input voltage
APPLICATIONS
drops below a preset level. The on-chip NPN power switch EL Panel Drivers has a low 170m V saturation voltage at a switch current
2-Cell and 3-Cell to 5V Conversion EF FI CI EN CY of 1A. The LT1303/LT1303-5 are available in 8-lead PDIP
Palmtop Computers or SO packages, easing board space requirements.
Portable Instruments
For higher output current, please see the LT1305 or
Bar-Code Scanners
LT1302.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Wireless Systems Burst Mode is a trademark of Linear Technology Corporation.
TYPICAL APPLICATION
L1 5V Output Efficiency
VIN = 4V
316k 1% VIN SW
VIN = 2V
VOUT, 5V VIN = 2.5V
SENSELBI
VIN = 3V
412k LT1303-5
100µF2 CELLS 100k
LOW BATTERY
SHUTDOWN LBOSHDN GOES LOW AT
VBAT = 2.2V
GND PGND
L1 = SUMDIA CD54-220
LT1303 TA02
Figure 1. 2-Cell to 5V DC/DC Converter with Low-Battery Detect
LOAD CURRENT (m A)
LT1303 TA01
Page Summary Contents For LINEAR TECHNOLOGY - LT1303 LT1303-5 Data Sheet manual specifications guide User's Manual
Manual Details
| Brand | Linear |
|---|---|
| Pages | 12 |
| File Size | 248.43 KB |
| Published | May 25, 2026 |
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