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LTC4212 Datasheet(PDF) 14 Page - Linear Technology

Part # LTC4212
Description  Hot Swap Controller with Power-Up Timeout
PDF  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4212 Datasheet(HTML) 14 Page - Linear Technology

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LTC4212
4212f
Figure 2. Normal Power-Up, Power Good Glitch Filter and ECB Reset Sequences
CHECK FOR GATE < 0.2V
ON GOES LOW
GLITCH FILTER TRIPS BREAKER
CHECK FOR FAULT HIGH
LOGIC RESET
(200
µA GATE PULLDOWN)
FAST COMP ARMED
SLOW COMP & POWER GOOD CIRCUIT ARMED
PGI SAMPLED
CIRCUIT BREAKER RESET
VCC
VCC
ON
VREF
2V TO 34V
VREF
TIMER
GATE
DC/DC
CONVERTER
OUTPUT
FAULT
PGT
PGI
(RST)
PGF
(RST)
PGI
(PGOOD)
PGF
(PGOOD)
4212 F02
12
3
4
5 6
7
8 9
10
11 12
13 14
15
16
17
18
19
20
21
POWER GOOD
TIME-OUT CYCLE
(CPGT)
NORMAL POWER-UP SEQUENCE
POWER GOOD GLITCH
FILTER SEQUENCE
ECB RESET
SEQUENCE
200ms
MONITOR DELAY
0.95V
0.65V
1ST TIMING
CYCLE (CTIMER)
1ST TIMING
CYCLE (CTIMER)
2ND TIMING
CYCLE (CTIMER)
SOFT-START
ACTIVE
1.236V
1.236V
OPERATIO



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