LTC1473LCGN

更新时间： 2024-09-24 22:31:31

品牌	Logo	应用领域
凌特 - Linear		驱动器开关光电二极管
页数	文件大小	规格书
16页	215K
描述
Dual Low Voltage PowerPathTM Switch Driver

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中文翻译

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数据手册

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LTC1473LCGN 数据手册

LTC1473L

Dua l Lo w Vo lta g e

Po we rPa th^TMSwitc h Drive r

FEATURES

DESCRIPTIO

Power Path Management for Systems

with Multiple DC Sources

Switches and Isolates Sources from 3.3V to 10V

All N-Channel Switching to Reduce Power Losses

and System Cost

Built-In Step-Up Regulator for N-Channel Gate Drive

Capacitor Inrush and Short-Circuit Current Limited

User-Programmable Timer Prevents Overdissipation

The LTC^®1473L provides reliable and efficient switching

between two DC power sources. This device drives two

externalsets ofback-to-backN-channelMOSFETswitches

to route power to the input of a low voltage system. An

internal boost regulator provides the voltage to fully en-

hance the logic-level N-channel MOSFET switches while

an internal undervoltage lock-out circuit keeps the system

alive down to 2.8V.

■

During Current Limiting

Undervoltage Lockout Prevents Operation with Low

Inputs

The LTC1473L senses current to limit inrush between the

batteries and the system supply capacitor during switch-

over transitions or during fault conditions. A user-pro-

grammable timer monitors the time the MOSFET switches

are in current limit and latches them off when the pro-

grammed time is exceeded.

■

Small Footprint: 16-Pin Narrow SSOP

APPLICATIO S

A unique “2-diode” logic mode ensures system start-up

regardless of which input receives power first.

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

PowerPath is a trademark of Linear Technology Corporation.

■

Portable Computers

Portable Instruments

Fault Tolerant Computers

Battery-Backup Systems

■

3.3V/5V Power Management

TYPICAL APPLICATIO

3.3V to 4-Cell NiMH Backup Switch

Si9926DY

DCIN

3.3V

LTC1473L

BAT54C

IN1

IN2

GA1

SAB1

GB1

LOGIC

DRIVEN

BAT1

SENSE

DIODE

TIMER

0.04Ω

4× NiMH

3.3V OR

SENSE

BAT1

–

SENSE

OUT

GA2

SAB2

GB2

1mH*

TIMER

1µF

2000pF

GND

1473 TA01

* COILCRAFT 1812LS-105XKBC

Si9926DY

12 3 4 5 6 7...16

中文翻译

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与LTC1473LCGN相关器件

型号	品牌	获取价格	描述	数据表
LTC1473LCGN#PBF	Linear	获取价格	暂无描述
LTC1473LCGN#TR	Linear	获取价格	LTC1473L - Dual Low Voltage PowerPath Switch Driver; Package: SSOP; Pins: 16; Temperature
LTC1473LCGN#TRPBF	Linear	获取价格	LTC1473L - Dual Low Voltage PowerPath Switch Driver; Package: SSOP; Pins: 16; Temperature
LTC1474	Linear	获取价格	Low Quiescent Current High Efficiency Step-Down Converters
LTC1474_15	Linear	获取价格	Low Quiescent Current High Efficiency Step-Down Converters
LTC1474CMS8	Linear	获取价格	Low Quiescent Current High Efficiency Step-Down Converters
LTC1474CMS8-3.3	Linear	获取价格	Low Quiescent Current High Efficiency Step-Down Converters
LTC1474CMS8-3.3#PBF	Linear	获取价格	LTC1474 - Low Quiescent Current High Efficiency Step-Down Converters; Package: MSOP; Pins:
LTC1474CMS8-3.3#TR	Linear	获取价格	LTC1474 - Low Quiescent Current High Efficiency Step-Down Converters; Package: MSOP; Pins:
LTC1474CMS8-5	Linear	获取价格	Low Quiescent Current High Efficiency Step-Down Converters

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