LTC4221I 데이터 시트보기 (PDF) - Linear Technology

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LTC4221I

Dual Hot Swap Controller/Power Sequencer with Dual Speed, Dual Level Fault Protection

Linear Technology 

LTC4221

TYPICAL APPLICATIO

Sequenced Up/Down, Channel 2 Up First, Down Last

VCC1

3.3V

VCC2

2.5V

ON

0V TO 3.3V

OR

3.3V TO 0V

BACKPLANE

CONNECTOR

(FEMALE)

PCB EDGE

CONNECTOR

(MALE)

LONG

RX1

LONG

10Ω

Z1

SHORT

R3

12.1k

CX1

100nF

Z2

R6

10k

R2

20.5k

R4

23.2k

R1

23.7k

D1

RSENSE1

0.004Ω

RX2

10Ω

CX2

100nF

Q1

IRF7413

RSENSE2

0.004Ω

Q2

IRF7413

RF3

14.3k

VCC1

ON1

SENSE1 GATE1 VCC2

SENSE2 GATE2

FB2

RF4

5.11k

VOUT1

3.3V

5A

VOUT2

2.5V

5A

FAULT

GND

SHORT

LONG

D1: 1N4148

Z1, Z2: SMAJ10

CTIMER

470nF

R5

9.53k

CFILTER

1nF

ON2

FAULT

GND

TIMER

FILTER

LTC4221

PWRGD2

PWRGD1

FB1

RF1

20k

RF2

5.11k

4221 TA06

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DESCRIPTION

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COMMENTS

24-Pin, Operates from 3V to 12V and Supports –12V

Operates from 2.7V to 12V, System Reset Output

Operates up to 16.5V, Overvoltage Protection to 33V

3.3V, 5V and ±12V Supplies

Operates from 1.2V to 12V, Power Sequencing

Operates from 2.7V to 16.5V

Operates from 2.7V to 16.5V, Multifunction Current Control

2.5V to 16.5V, Multifunction Current Control

1.7V to 16.5V, Multifunction Current Control

–48V Hot Swap Controller, Active Current Limiting

Active Current Limiting With Drain Acceleration

Active Current Limiting With Drain Acceleration and Three

Sequenced Power Good Outputs

28 Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408)432-1900● FAX:(408)434-0507 ● www.linear-tech.com

4221fa

LT 0707 REV A • PRINTED IN THE USA

© LINEAR TECHNOLOGY CORPORATION 2004

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