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LTC1921 Datasheet(PDF) 19 Page - Linear Technology

Part # LTC1921
Description  Negative Voltage Hot Swap Controllers in SOT-23
PDF  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1921 Datasheet(HTML) 19 Page - Linear Technology

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4251b12f
LTC4251B/LTC4251B-1/
LTC4251B-2
APPLICATIONS INFORMATION
Figure 10. Undervoltage Timing with an Overvoltage Glitch (All Waveforms are Referenced to VEE)
Figure 11. Overvoltage Timing (All Waveforms are Referenced to VEE)
13
24 5
6 7
8 9
VUV/0V DROPS BELOW VOVLO AND TIMER RESTARTS INITIAL TIMING CYCLE.
VUV/0V CLEARS VUVHI. CHECK TIMER < VTMRL, GATE < VGATEL AND SENSE < VCB.
VUV/0V OVERSHOOTS VOVHI AND TIMER ABORTS INITIAL TIMING CYCLE.
TIMER CLEARS VTMRL, CHECK GATE < VGATEL AND SENSE < VCB.
VOVHI
VUVHI
VOVLO
VTMRH
VTMRL
VACL
VCB
5.8μA
230μA
58μA
58μA
5.8μA
5.8μA
INITIAL TIMING CYCLE
START-UP CYCLE
4251b12 F10
UV/0V
TIMER
GATE
SENSE
10
13
24
5 6
7
UV/0V
TIMER
GATE
SENSE
VOVHI
VTMRH
VOVLO
VACL
VCB
5.8μA
5.8μA
5.8μA
5.8μA
4251b12 F11
230μA
58μA
58μA
VUV/0V DROPS BELOW VOVLO AND GATE RESTARTS.
VUV/0V OVERSHOOTS VOVHI AND GATE PULLS TO VEE. TIMER UNAFFECTED.



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