LT1304CS85PBF Linear Technology Corporation, LT1304CS85PBF Datasheet

LT1304CS85PBF

Manufacturer Part Number

LT1304CS85PBF

Description

SOP8

Manufacturer

Linear Technology Corporation

Datasheet

1.LT1304CS85PBF.pdf (16 pages)

Specifications of LT1304CS85PBF

Date_code

06+

Current page: 1 of 16
Download datasheet (299Kb)

FEATURES

APPLICATIONS

TYPICAL

5V at 200mA from Two Cells

10 A Quiescent Current in Shutdown

Operates with V

Low-Battery Detector Active in Shutdown

Low Switch V

120 A Quiescent Current in Active Mode

Switching Frequency Up to 300kHz

Programmable Peak Current with One Resistor

8-Lead SO Package

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

SUMIDA CD54-220

1N5817

2 CELLS

2-Cell to 5V Step-Up Converter with Low-Battery Detect

APPLICATION

100 F

CESAT

as Low as 1.5V

: 370mV at 1A Typical

499k

604k

SHUTDOWN

LBI

LIM

SHDN

LT1304-5

22 H*

SENSE

GND

LBO

D1**

100k

100 F

200mA

LBO

LOW WHEN

BAT

DESCRIPTION

The LT

ideal for use in small, low voltage, battery-operated sys-

tems. 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, 120 A in active mode, decreases to just 10 A 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 I

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.

1304 TA01

< 2.2V

, LTC and LT are registered trademarks of Linear Technology Corporation.

LT1304/LT1304-3.3/LT1304-5

1304 is a micropower step-up DC/DC converter

DC/DC Converters with

Low-Battery Detector

Active in Shutdown

0.1

LOAD CURRENT (mA)

Efficiency

Micropower

LIM

pin to ground. The

100

= 3.3V

= 2.5V

= 1.8V

1304 TA02

500

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