LTC4212 LINER [Linear Technology], LTC4212 Datasheet - Page 14

• Manufacturer Part Number: LTC4212
• Description: Hot Swap Controller with Power-Up Timeout
• Manufacturer: LINER [Linear Technology]

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