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LTC4251-1IS6#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
19
425112fd
LTC4251/LTC4251-1/
LTC4251-2
For more information www.linear.com/4251
APPLICATIONS INFORMATION
Figure 10. Undervoltage Timing with an Overvoltage Glitch (All Waveforms are Referenced to V
EE
)
1 32 4 5 6 7 8 9
V
UV/0V
DROPS BELOW V
OVLO
AND TIMER RESTARTS INITIAL TIMING CYCLE.
V
UV/0V
CLEARS V
UVHI
. CHECK TIMER < V
TMRL
, GATE < V
GATEL
AND SENSE < V
CB
.
V
UV/0V
OVERSHOOTS V
OVHI
AND TIMER ABORTS INITIAL TIMING CYCLE.
TIMER CLEARS V
TMRL
, CHECK GATE < V
GATEL
AND SENSE < V
CB
.
V
OVHI
V
UVHI
V
OVLO
V
TMRH
V
TMRL
V
ACL
V
CB
5.8µA
230µA
58µA
58µA
5.8µA
5.8µA
INITIAL TIMING CYCLE
START-UP CYCLE
425112 F10
UV/0V
TIMER
GATE
SENSE
10
1 32 4 5 6 7
UV/0V
TIMER
GATE
SENSE
V
OVHI
V
TMRH
V
OVLO
V
ACL
V
CB
5.8µA
5.8µA
5.8µA
5.8µA
425112 F11
230µA
58µA
58µA
V
UV/0V
DROPS BELOW V
OVLO
AND GATE RESTARTS.
V
UV/0V
OVERSHOOTS V
OVHI
AND GATE PULLS TO V
EE
. TIMER UNAFFECTED.
Figure 11. Overvoltage Timing (All Waveforms are Referenced to V
EE
)
20
425112fd
LTC4251/LTC4251-1/
LTC4251-2
For more information www.linear.com/4251
APPLICATIONS INFORMATION
TIMER
GATE
SENSE
V
OUT
V
ACL
V
TMRL
V
CB
5.8µA
5.8µA
CB FAULT
230µA
1 2
425112 F12a
TIMER
GATE
SENSE
V
OUT
V
ACL
V
TMRH
V
CB
5.8µA
CB FAULT
230µA
1 2
TIMER LATCHES OFF
425112 F12b
TIMER
GATE
SENSE
V
OUT
V
ACL
V
TMRH
V
CB
5.8µA
5.8µA
230µA
230µA
1 432
TIMER LATCHES OFF
425112 F12c
(12a) Momentary Circuit-Breaker Fault (12b) Circuit-Breaker Time-Out
Figure 12. Timer Behavior (All Waveforms are Referenced to V
EE
)
(12c) Multiple Circuit-Breaker Faults
21
425112fd
LTC4251/LTC4251-1/
LTC4251-2
For more information www.linear.com/4251
TIMER
GATE
SENSE
V
OUT
V
ACL
V
TMRH
V
CB
58µA
5.8µA
5.8µA
1 432
230µA
425112 F13a
TIMER
GATE
SENSE
V
OUT
V
FCL
V
ACL
V
TMRH
V
CB
5.8µA
230µA
1 2
TIMER LATCHES OFF
425112 F13b
TIMER
GATE
SENSE
V
ACL
V
TMRH
V
TMRL
V
CB
5.8µA
5.8µA
5.8µA
1 5 6432
230µA
58µA
58µA
RESET LATCHED TIMER FAULT BY EXTERNAL LOW PULSE.
425112 F14
TIMER
GATE
SENSE
V
ACL
V
ACL
+ 10mV
V
TMRH
V
TMRL
~V
GS(th)
V
CB
5.8µA
1 4 5 632
230µA
INTERNAL
SOFT-START
REFERENCE
58µA
10mV
END OF INITIAL TIMING CYCLE
425112 F15
Figure 13. Current Limit Behavior (All Waveforms are Referenced to V
EE
)
(13a) Analog Current Limit Fault (13b) Fast Current Limit Fault
Figure 14. Latched Fault Reset Timing
(All Waveforms are Referenced to V
EE
)
Figure 15. Internal Soft-Start Timing
(All Waveforms are Referenced to V
EE
)
APPLICATIONS INFORMATION
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24

LTC4251-1IS6#TRPBF

Mfr. #:
Buy LTC4251-1IS6#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Hot Swap Voltage Controllers Neg V Hot Swap Cntrs in SOT-23
Lifecycle:
New from this manufacturer.
Delivery:
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