LT4250 LINER [Linear Technology], LT4250 Datasheet - Page 21

• Manufacturer Part Number: LT4250
• Description: Negative Voltage Hot Swap Controllers in SOT-23
• Manufacturer: LINER [Linear Technology]

applicaTions inForMaTion
TIMER
SENSE
GATE
SENSE
TIMER
GATE
V
OUT
V
5.8µA
TMRL
Figure 14. Latched Fault Reset Timing
(All Waveforms are Referenced to V
58µA
230µA
1
1
(13a) Analog Current Limit Fault
2
230µA
2
RESET LATCHED TIMER FAULT BY EXTERNAL LOW PULSE.
3
3
4
4
5 6
V
TMRH
58µA
58µA
V
TMRH
V
V
ACL
CB
V
V
ACL
CB
Figure 13. Current Limit Behavior (All Waveforms are Referenced to V
5.8µA
5.8µA
EE
5.8µA
)
425112 F14
5.8µA
425112 F13a
SOFT-START
REFERENCE
SENSE
TIMER
INTERNAL
GATE
V
OUT
TIMER
SENSE
GATE
5.8µA
Figure 15. Internal Soft-Start Timing
(All Waveforms are Referenced to V
V
TMRL
1
230µA
V
LTC4251/LTC4251-1/
FCL
(13b) Fast Current Limit Fault
1
V
TMRH
58µA
END OF INITIAL TIMING CYCLE
2
3
2
4
10mV
V
V
V
TIMER LATCHES OFF
ACL
CB
TMRH
EE
5
V
ACL
)
~V
V
230µA
+ 10mV
CB
GS(th)
V
5.8µA
ACL
LTC4251-2
6
EE
)
425112 F13b
425112 F15
21
425112fc