Datasheet > LTC1514IS8-5

LTC1514IS8-5

更新时间： 2024-11-04 22:34:35

品牌	Logo	应用领域
凌特 - Linear		转换器电池比较器开关
页数	文件大小	规格书
8页	239K
描述
Step-Up/Step-Down Switched Capacitor DC/DC Converters with Low-Battery Comparator

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中文翻译

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数据手册

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LTC1514IS8-5 数据手册

LTC1514-3.3/LTC1514-5

Step-Up/Step-Down Switched

Capacitor DC/DC Converters

with Low-Battery Comparator

FEATURES

DESCRIPTION

TheLTC^®1514-3.3/LTC1514-5aremicropowerswitched

capacitor DC/DC converters that produce a regulated

output voltage by either stepping up or stepping down

the input voltage. Output voltage is fixed at either 3.3V

(LTC1514-3.3) or 5V (LTC1514-5) by an internal resistor

divider.

■

3.3V or 5V Output Voltages

■

2V to 10V Input Voltage Range

■

Up to 50mA Output Current

■

Only Three External Capacitors Required

Soft Start Limits Inrush Current at Turn-On

Low Operating Current: 60µA

Low Shutdown Current: 10µA

A unique architecture allows the parts to accommodate

a wide input voltage range (2V to 10V) while maintaining

±4% regulation. Additional circuitry prevents excessive

inrush current and output voltage ripple when large V_IN

to V_OUTdifferentials are present.

Shutdown Disconnects Load from V_IN

Short-Circuit and Overtemperature Protected

650kHz Switching Frequency

Low-Battery Comparator Active in Shutdown

Available in SO-8 Package

An internal uncommitted comparator is kept active in

shutdown. The comparator has an open-drain output for

flexible interfacing.

APPLICATIONS

■

Battery-Operated Equipment

The parts are short-circuit and overtemperature pro-

tected. Battery life is maximized by very low operating

currents (I_CC= 60µA typ, 10µA in shutdown). Both parts

are available in an SO-8 package.

■

Smart Card Readers

■

Local Power Supplies

■

Handheld Instruments

■

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

Battery Backup Supplies

TYPICAL APPLICATION

LTC1514-5 Output Voltage

vs Input Voltage

5V Step-Up/Step-Down Power Supply with Low-Battery Detect

5.2

= 10mA

100k

OUT

1.33M

LTC1514-5

SHDN

5.1

5.0

4.9

4.8

= 5V

OUT

ON OFF

LOW BAT

OUT

= 50mA

LBO

LBI

10µF

0.22µF

4-CELL

NiCd

499k

–

GND

10µF

1514 TA01

INPUT VOLTAGE (V)

LT1514 • TA02

12 3 4 5 6 7 8

中文翻译

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与LTC1514IS8-5相关器件

型号	品牌	获取价格	描述	数据表
LTC1514IS8-5#TRPBF	Linear	获取价格	LTC1514 - Step-Up/Step-Down Switched Capacitor DC/DC Converters with Low-Battery Comparato
LTC1514-X	Linear Systems	获取价格	Micropower, Regulated 3.3V Charge Pump in a 5-Pin SOT-23 Package
LTC1515	Linear	获取价格	Step-Up/Step-Down Switched Capacitor DC/DC Converters with Reset
LTC1515	Linear Systems	获取价格	High Voltage, Low Quiescent Current Inverting Charge Pump
LTC1515	ADI	获取价格	具复位功能的升压 / 降压型开关电容器 DC/DC 转换器
LTC1515CS8	Linear	获取价格	Step-Up/Step-Down Switched Capacitor DC/DC Converters with Reset
LTC1515CS8#PBF	Linear	获取价格	LTC1515 - Step-Up/Step-Down Switched Capacitor DC/DC Converters with RESET; Package: SO; P
LTC1515CS8-3.3/5	Linear	获取价格	Step-Up/Step-Down Switched Capacitor DC/DC Converters with Reset
LTC1515CS8-3.3/5#PBF	Linear	获取价格	LTC1515 - Step-Up/Step-Down Switched Capacitor DC/DC Converters with RESET; Package: SO; P
LTC1515CS8-3.3/5#TR	Linear	获取价格	LTC1515 - Step-Up/Step-Down Switched Capacitor DC/DC Converters with RESET; Package: SO; P

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