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

SWITCH RESETS LATCHED TIMER

SWITCH RELEASES SS

1

5.8μA

TIMER

2 34 5 67 8 9

VTMRH

˜"


t
*DRN

VTMRL

5.8μA

GATE

58μA

VGATEL


t
7ACL + VOS)

SS 
t
7CB + VOS)


t
7OS

58μA

VIN – VGATEH

SENSE

VACL

VCB

DRAIN

VDRNCL

VDRNL

5.8μA

PWRGD

GATE START-UP

MOMENTARY DPST SWITCH RESET

425212 F15

Figure 15. Pushbutton Reset of LTC4252-1’s Latched Fault

(All Waveforms Are Referenced to VEE)

CIRCUIT BREAKER TIMES OUT

RETRY

12

˜"


t
*DRN

TIMER

5.8μA

5.8μA

VTMRL

GATE

SS

SENSE

5.8μA

5.8μA

5.8μA

5.8μA

3 4 5 6 78 9 10

VTMRH

5.8μA ˜"


t
*DRN

5.8μA

58μA

VGATEL


t
7ACL + VOS)


t
7CB + VOS)


t
7OS

58μA

VIN – VGATEH

VACL

VCB

5.8μA

VOUT

DRAIN

VDRNCL

VDRNL

PWRGD

CB FAULT

SHUTDOWN COOLING

GATE

START-UP

425212 F16

Figure 16. Shutdown Cooling Timing Behavior of LTC4252-2 (All Waveforms Are Referenced to VEE)

425212fd

27

Share Link: