Datasheet > LTC1645

LTC1645

更新时间： 2023-12-20 18:46:07

品牌	Logo	应用领域
亚德诺 - ADI		控制器
页数	文件大小	规格书
24页	329K
描述
双路热插拔控制器 / 电源序列发生器

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LTC1645 数据手册

LTC1645

Dual-Channel Hot Swap

Controller/Power Sequencer

FEATURES

DESCRIPTIO

The LTC^®1645 is a 2-channel Hot Swap^TMcontroller that

allows a board to be safely inserted and removed from a

livebackplane. UsingexternalN-channelpasstransistors,

the supply voltages can be ramped at a programmable

rate. Two high side switch drivers control the N-channel

gates for supply voltages ranging from 1.2V to 12V. The

two channels can be set to ramp up and down separately,

ortheycanbeprogrammedtoriseandfallsimultaneously,

ensuring power supply tracking at the two outputs.

■

Allows Safe Board Insertion and Removal from a

Live Backplane

■

Programmable Power Supply Sequencing

■

Programmable Electronic Circuit Breaker

■

User-Programmable Supply Voltage Power-Up and

Power-Down Rate

■

High Side Drivers for External N-Channel FETs

■

Controls Supply Voltages from 1.2V to 12V

■

Ensures Proper Power-Up Behavior

Undervoltage Lockout

■

Programmable electronic circuit breakers protect against

shorts at either output. The RESET output can be used to

generate a system reset when a supply voltage falls below

a user-programmed voltage. An additional spare com-

parator is available for monitoring a second supply

voltage.

■

Glitch Filter Protects Against Spurious RESET Signals

8- and 14-Pin SO Packages

■

APPLICATIO S

■

Hot Board Insertion

■

TheLTC1645isavailableinthe8-and14-pinSOpackages.

Power Supply Sequencing

■

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

Electronic Circuit Breaker

Hot Swap is a trademark of Linear Technology Corporation.

TYPICAL APPLICATIO

5V and 3.3V Hot Swap

5V and 3.3V Hot Swap Waveforms

3.3V

0.005Ω*

IRF7413

OUT2

IN2

IN1

LOAD2

5V/DIV

0.005Ω*

IRF7413

OUT1

10Ω

LOAD1

GATEn

10V/DIV

10Ω

0.01µF

25V

0.01µF

25V

V_OUT2

5V/DIV

SENSE1 GATE1

SENSE2 GATE2

CC2

CC1

V_OUT1

5V/DIV

LTC1645

(8-LEAD)

10k

GND

1645 TA01

GND

*LRF1206-01-R005-J (IRC)

BACKPLANE PLUG-IN CARD

1645fa

12 3 4 5 6 7...24

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