ltc4221 Linear Technology Corporation, ltc4221 Datasheet - Page 4

• Manufacturer Part Number: ltc4221
• Description: Dual Hot Swap Controller/power Sequencer With Dual Speed, Dual Level Fault Protection
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
LTC4221
SYMBOL
t
t
t
t
t
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: All current into device pins are positive. All voltages are referenced
to ground unless otherwise specified.
4
TYPICAL PERFOR A CE CHARACTERISTICS
P(FAULT-GATE)
P(OV-GATE)
P(FILTER-GATE)
RESET
P(ON-GATE)
0.815
0.810
0.805
0.800
0.795
0.790
0.780
0.785
0.775
0.770
6
5
0
4
3
2
1
–50
–50
I
V
CC1
TIMER = 0.3V
V
CC2(UVL)
CC2
–25
–25
vs Temperature
= 1V
vs Temperature
0
0
PARAMETER
FAULT Low to GATE n Discharging
FB n OV Comparator Trip to GATE n
Discharging
Filter Comparator Trip to GATE n
Discharging
Circuit Breaker Reset Delay Time
Turn Off Propagation Delay
TEMPERATURE (°C)
TEMPERATURE (°C)
RISING
25
FALLING
25
V
V
V
CC1
V
CC1
50
CC1
50
CC1
= 13.5V
= 2.7V
= 12V
= 5V
75
75
W
100
100
4221 G04
4221 G01
U
125
125
0.0001
10000
0.200
0.175
0.150
0.125
0.100
0.075
0.050
0.025
0.001
1000
0.01
100
0.1
10
0
1
– 50
A
0
I
|I
CONDITIONS
V
V
V
V
V
CC2
V
= 25°C. V
SENSE2(IN)
FAULT
FB n
FILTER
ON1
ON n
CC1
– 25
vs Temperature
= 0V to 1V
2
= 13.5V
≤ 0.821V to GATE n Discharging
< 0.4V to FAULT High
The
= 3.3V to 0V
= 0V to 1.5V
0
4
●
TEMPERATURE (°C)
CC1
| vs V
indicates specifications which apply over the full operating
V
V
V
V
25
SENSE2
= 5V, V
CC1
CC1
CC1
6
SENSE2
V
Note 3: An internal zener on each GATE pin clamps the charge pump
voltage to a typical maximum operating voltage of 26V. External overdrive
of either GATE pin beyond its internal zener voltage may damage the
device.
V
V
CC2
= 2.7V, V
= 5V, V
= 13.5V, V
V
V
CC2
CC2
CC2
CC2
50
(V)
8
= 13.5V
= 3.3V
= 12V
CC2
= 5V
= 1V
CC2
75
CC2
10
CC2
= 3.3V, unless otherwise noted.
= 3.3V
= 1V
100
= 13.5V
12
4221 G02
4221 G05
125
●
●
●
●
●
102.0
101.5
100.5
101.0
100.0
2.52
2.50
2.48
2.46
2.44
2.42
2.40
2.38
2.36
99.5
– 50
MIN
V
V
0
TIMER = 0.3V
CC1(UVL)
SENSE(FC)
V
T
CC2
A
– 25
= 25°C
2
= V
CC1
4
vs Temperature
0
TEMPERATURE (°C)
vs V
TYP
15
18
15
15
15
6
25
CC1
V
CC1
8
(V)
50
MAX
FALLING
10
RISING
35
35
35
30
35
75
12
100
14
UNITS
4221 G06
4221 G03
4221fa
125
μs
μs
μs
μs
μs
16