LTC1473IGN Datasheet

IC型號(hào)：
LTC1473IGN
PDF描述：
Dual PowerPathTM Switch Driver
文件大?。?/label>
219.59KB
PDF頁(yè)數(shù)：
16頁(yè)
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LTC1473

Dual PowerPath

Switch Driver

FEATURES

DESCRIPTIO

Power Path Management for Systems with Multiple

DC Sources

All N-Channel Switching to Reduce Power Losses and

System Cost

Switches and Isolates Sources Up to 30V

Adaptive High Voltage Step-Up Regulator for N-Channel

Gate Drive

Capacitor Inrush and Short-Circuit Current Limited

User-Programmable Timer to Limit Switch Dissipation

Small Footprint: 16-Pin Narrow SSOP

The LTC

廬

1473 provides a power management solution for

single and dual battery notebook computers and other

portable equipment. The LTC1473 drives two sets of back-

to-back N-channel MOSFET switches to route power to the

input of the main system switching regulator. An internal

boost regulator provides the voltage to fully enhance the

logic level N-channel MOSFET switches.

The LTC1473 senses current to limit surge currents both

into and out of the batteries and the system supply

capacitor during switch-over transitions or during fault

conditions. A user-programmable timer monitors the time

the MOSFET switches are in current limit and latches them

off when the programmed time is exceeded.

A unique 鈥?-diode mode鈥?logic 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.

APPLICATIO S

Notebook Computers

Portable Instruments

Handi-Terminals

Portable Medical Equipment

Portable Industrial Control Equipment

TYPICAL APPLICATION

MBRD340

Si9926DY

BAT1

MMBD2838LTI

DCIN

FROM POWER

MANAGEMENT

碌P

TIMER

4700pF

1碌F

1mH*

MMBD914LTI

LTC1473

IN1

IN2

DIODE

TIMER

GND

GA1

SAB1

GB1

SENSE

0.04鈩?/div>

INPUT OF SYSTEM

HIGH EFFICIENCY DC/DC

SWITCHING REGULATOR

(LTC1735, ETC)

SENSE

鈥?/div>

GA2

SAB2

GB2

OUT

BAT2

*COILCRAFT 1812LS-105XKBC

Si9926DY

1473 TA01

數(shù)據(jù)列表
LTC1473
標(biāo)準(zhǔn)包裝
100
類別
集成電路 (IC)
家庭
PMIC - O 圈控制器
系列
PowerPath™
應(yīng)用
手持/移動(dòng)設(shè)備
FET 型
N 溝道
輸出數(shù)
2
內(nèi)部開關(guān)
無
延遲時(shí)間 - 開啟
22µs
延遲時(shí)間 - 關(guān)閉
1µs
電源電壓
4.75 V ~ 30 V
電流 - 電源
100µA
工作溫度
-40°C ~ 85°C
安裝類型
表面貼裝
封裝/外殼
16-SSOP（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝
16-SSOP
包裝
管件

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LTC1473IGN Datasheet

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