LT4250 LINER [Linear Technology], LT4250 Datasheet - Page 19

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

applicaTions inForMaTion
SENSE
TIMER
UV/0V
GATE
V
Figure 10. Undervoltage Timing with an Overvoltage Glitch (All Waveforms are Referenced to V
UVHI
V
SENSE
OVHI
TIMER
UV/0V
GATE
1
V
TMRH
V
V
UV/0V
2
OVHI
5.8µA
3
V
UV/0V
V
CLEARS V
V
1
UV/0V
OVLO
Figure 11. Overvoltage Timing (All Waveforms are Referenced to V
V
OVERSHOOTS V
UV/0V
DROPS BELOW V
UVHI
OVERSHOOTS V
INITIAL TIMING CYCLE
. CHECK TIMER < V
5.8µA
V
5.8µA
OVLO
OVHI
58µA
OVLO
2
AND TIMER ABORTS INITIAL TIMING CYCLE.
OVHI
V
3
AND TIMER RESTARTS INITIAL TIMING CYCLE.
UV/0V
AND GATE PULLS TO V
230µA
4
TMRL
DROPS BELOW V
5 6
V
, GATE < V
TMRH
58µA
7
V
V
V
TMRL
ACL
CB
GATEL
OVLO
EE
4 5
58µA
. TIMER UNAFFECTED.
AND SENSE < V
START-UP CYCLE
AND GATE RESTARTS.
5.8µA
TIMER CLEARS V
6 7
230µA
8 9
CB
58µA
10
.
LTC4251/LTC4251-1/
TMRL
V
V
ACL
CB
, CHECK GATE < V
5.8µA
5.8µA
EE
)
GATEL
AND SENSE < V
425112 F11
LTC4251-2
5.8µA
425112 F10
EE
)
CB
.
19
425112fc