LTC4220 View Datasheet(PDF) - Linear Technology

Part Name

Description

Manufacturer

LTC4220

Negative Voltage Hot Swap Controllers

Linear Technology 

LTC4252-1/LTC4252-2

LTC4252A-1/LTC4252A-2

APPLICATIONS INFORMATION

–48RTN

Hot Swap SECTION

R1

402k

C1

10nF

R2

32.4k

RIN1

3 × 1.8k IN SERIES

1/4W EACH

1

DDIDNZ11†3B**

7 UV/OV VIN DRAIN 6

8

TIMER

5

GATE

CT

0.33μF

LTC4252-1

2

SS

CSS

68nF

3

VEE SENSE

4

CIN

1μF

RD

1M

LOAD

MODULE

RC1

10Ω

CC1

22nF

Q1

IRF530S

RS

0.02Ω

–48V A

DIODE-OR CIRCUIT FOR CHANNEL A

RIN2

3 × 1.8k IN SERIES

1/4W EACH

DDDINZ21†3B**

CIN2

1μF

Q6

FDV301N

1

9

VIN

7

UV

DRAIN

2 PWRGD

10

LTC4252-2

4

TIMER SENSE

3 SS

8 OV

6

GATE

VEE

5

Q5

FDV301N

R3

12k

R4

150Ω

Q4

BSS131

R5

560Ω

RC2

10μ

CC2

22nF

Q2

IRF530S

–48V B

DIODE-OR CIRCUIT FOR CHANNEL B

RIN3

3 × 1.8k IN SERIES

1/4W EACH

DDDINZ31†3B**

CIN3

1μF

Q9

FDV301N

1

9

UV

VIN DRAIN 7

2 PWRGD

10

LTC4252-2

4

TIMER SENSE

3 SS

8 OV

6

GATE

VEE

5

Q8

FDV301N

R6

12k

R7

150Ω

Q7

BSS131

R8

560Ω

RC3

10Ω

CC3

22nF

**DIODES, INC †RECOMMENDED FOR HARSH ENVIRONMENTS

Figure 22. –48V/2.5A Diode-OR Application

Q3

IRF530S

425212 F22

32

425212fd

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