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LTC1421 Datasheet(PDF) 12 Page - Linear Technology

Part # LTC1421
Description  Hot Swap Controller
PDF  40 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1421 Datasheet(HTML) 12 Page - Linear Technology

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background image
LTC4211
12
4211fb
BLOCK DIAGRAM
VREF
VREF
–
+
SLOW
COMP
50mV
150mV
0.2V
COMP7
M3
GLITCH FILTER
(SEE NOTE 1)
UVLO
–
+
FAST
COMP
300ns
DELAY
GLITCH FILTER
150μs
GLITCH FILTER
FUNCTION OF
OVERDRIVE
BG
VREF
0.2V
VREF = 1.236V
CB
TRIPS
OR UVLO
ON LOW
START-UP
CURRENT
REGULATOR
GATE
CHARGING
200μA
10μA
POWER BAD
CB TRIPS
VREF
10μA
6 (7)
GATE
7 (8)
SENSE
8 (9)
VCC
M1
CHARGE
PUMP
Z1
VZ (TYP) = 12V
M2
GND
4 (5)
FAULT
(10)
MS ONLY
–
+
COMP1
2
ON
5 (6)
4211 BD
FB
COMP2
–
+
–
+
COMP3
tTIMER
0.2V
VREF
COMP4
–
+
VREF
COMP5
NORMAL, RESET
NOTE 1: SET BY FILTER CAPACITOR FOR MS
20μs DEFAULT FOR MS8, S8
PIN NUMBERS FOR S8/MS8 (MS)
NORMAL
FAULT
TIMER
3 (4)
FILTER
(3)
MS ONLY
2μA
M6
M5
VCC
2μA
M4
VCC
10μA
LOGIC
RESET
1
COMP6
Z2
VZ (TYP) = 26V
VCC



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