Datasheet > LT1073_1

LT1073_1

更新时间： 2024-11-27 05:43:19

品牌	Logo	应用领域
凌特 - Linear		转换器
页数	文件大小	规格书
16页	254K
描述
Micropower DC/DC Converter Adjustable and Fixed 5V, 12V

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LT1073_1 数据手册

LT1073

Micropower

DC/DC Converter

Adjustable and Fixed 5V, 12V

FEATURES

DESCRIPTIO

The LT^®1073 is a versatile micropower DC/DC converter.

The device requires only three external components to

deliver a fixed output of 5V or 12V. The very low minimum

supply voltage of 1V allows the use of the LT1073 in

applications where the primary power source is a single

cell. An on-chip auxiliary gain block can function as a low-

battery detector or linear post-regulator.

■

No Design Required

■

Operates at Supply Voltages from 1V to 30V

■

Consumes Only 95µA Supply Current

Works in Step-Up or Step-Down Mode

■

Only Three External Off-the-Shelf Components

Required

■

Low-Battery Detector Comparator On-Chip

■

User-Adjustable Current Limit

Internal 1A Power Switch

Average current drain of the LT1073-5 used as shown in

the Typical Application circuit below is just 135µA un-

loaded, making it ideal for applications where long battery

life is important. The circuit shown can deliver 5V at 40mA

from an input as low as 1.25V and 5V at 10mA from a 1V

input.

■

Fixed or Adjustable Output Voltage Versions

■

Space-Saving 8-Pin PDIP or SO-8 Package

APPLICATIO S

■

Pagers

Cameras

Single-Cell to 5V Converters

Battery Backup Supplies

Laptop and Palmtop Computers

Cellular Telephones

Portable Instruments

The device can easily be configured as a step-up or step-

down converter, although for most step-down applica-

tions or input sources greater than 3V, the LT1173 is

recommended. Switch current limiting is user-adjustable

by adding a single external resistor. Unique reverse-

battery protection circuitry limits reverse current to safe,

nondestructive levels at reverse supply voltages up to

1.6V.

■

4mA to 20mA Loop Powered Instruments

■

Hand-Held Inventory Computers

■

Battery-Powered α, β, and γ Particle Detectors

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

TYPICAL APPLICATION

Single Alkaline “AA” Cell Operating

Hours vs DC Load Current

1000

Single-Cell to 5V Converter

CADDELL-BURNS

7300-12

1N5818

82µH

40mA

100

LIM

SW1

LT1073-5

L = 180µH

1.5V

AA CELL*

SENSE

100µF

SANYO

0S-CON

GND

SW2

L = 82µH

100

OPERATES WITH CELL VOLTAGE ≥1V

ADD 10µF DECOUPLING CAPACITOR IF

LOAD CURRENT (mA)

LT1073 TA02

BATTERY IS MORE THAN 2" AWAY FROM LT1073

1073 TA01

12 3 4 5 6 7...16

中文翻译

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与LT1073_1相关器件

型号	品牌	获取价格	描述	数据表
LT1073-12	Linear	获取价格	Micropower DC-DC Converter Ajustable and Fixed 5V, 12V
LT1073-5	Linear	获取价格	Micropower DC-DC Converter Ajustable and Fixed 5V, 12V
LT1073C	Linear	获取价格	Micropower DC-DC Converter Ajustable and Fixed 5V, 12V
LT1073CN8	Linear	获取价格	Micropower DC-DC Converter Ajustable and Fixed 5V, 12V
LT1073CN8-12	Linear	获取价格	Micropower DC-DC Converter Ajustable and Fixed 5V, 12V
LT1073CN8-5	Linear	获取价格	Micropower DC-DC Converter Ajustable and Fixed 5V, 12V
LT1073CN8-5#PBF	Linear	获取价格	LT1073 - Micropower DC-DC Converter Adjustable and Fixed 5V, 12V; Package: PDIP; Pins: 8;
LT1073CS8	Linear	获取价格	Micropower DC-DC Converter Ajustable and Fixed 5V, 12V
LT1073CS8#PBF	Linear	获取价格	暂无描述
LT1073CS8#TR	Linear	获取价格	LT1073 - Micropower DC-DC Converter Adjustable and Fixed 5V, 12V; Package: SO; Pins: 8; Te

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