LT1640LCS8 Просмотр технического описания (PDF) - Linear Technology

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LT1640LCS8

Negative Voltage Hot Swap Controller

Linear Technology 

LT1640L/LT1640H

TYPICAL APPLICATION

Using an EMI Filter Module

Many applications place an EMI filter module in the power

path to prevent switching noise of the module from being

injected back onto the power supply. A typical application

using the Lucent FLTR100V10 filter module is shown in

Figure 14. When using a filter, an optoisolator is required

to prevent common mode transients from destroying the

PWRGD and ON/OFF pins.

(SHORT PIN)

GND

GND

R4

562k

1%

R5

9.09k

1%

8

1

VDD

3

UV

PWRGD

DRAIN

LT1640L

2

OV

GATE

R6

10k

VEE

SENSE

1%

4

5

*

– 48V

R1

0.02Ω

3

5%

4

1

2

* DIODES INC. SMAT70A

7 1N4148

C2

3.3nF

6 100V

C1

150nF

25V

1N4003

R3

18k

5%

R2

10Ω

5%

Q1

IRF530

R7

51k

5%

MOC207

C3

0.1µF

100V

VIN+ VOUT+

LUCENT

FLTR100V10

VIN– VOUT–

CASE

C4 +

0.1µF

100V

C5

100µF

100V

Figure 14. Typical Application Using a Filter Module

LUCENT

JW050A1-E

1 VIN+

2

VOUT+

SENSE +

9

8

7

+

ON/OFF TRIM

C6

0.1µF

100V

4 VIN–

6

SENSE –

VOUT– 5

CASE

3

1640 F14

5V

C7

100µF

16V

RELATED PARTS

PART NUMBER

DESCRIPTION

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Dual Channel, Hot Swap Controller

LTC1422

High Side Drive, Hot Swap Controller in SO-8

LT1640A

–48V Hot Swap Controller in SO-8

LT1641

48V Hot Swap Controller

LTC1642

Fault Protected Hot Swap Controller

LTC1643

PCI Hot Swap Controller

LTC1645

Dual Hot Swap Controller

LTC1646

CompactPCITM Hot Swap Controller

LTC1647

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LTC4211

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LT4250

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CompactPCI is a trademark of the PCI Industrial Computer Manufacturers Group

COMMENTS

Operates from 3V to 12V

System Reset Output with Programmable Delay

LT1640 Pin Compatible, Improved Drain Pin Ruggedness

Foldback Analog Current Limit

Operates Up to 16.5V, Protected to 33V

3.3V, 5V, 12V, – 12V Supplies for PCI Bus

Operates from 1.2V to 12V, Power Sequencing

3.3V, 5V Supplies, 1V Precharge, Local PCI Reset Logic

Dual ON Pins for Supplies from 3V to 15V

2.5V to 16.5V, Dual Level Circuit Breaker, Active Inrush Limiting

LT1640 Pin Compatible, Active Current Limiting

Active Current Limiting, Fast Circuit Breaker for Short-Circuit Faults

16 Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

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

1640lhfb

LT/TP 1101 1.5K REV B • PRINTED IN USA

© LINEAR TECHNOLOGY CORPORATION 1998

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