LTC4221IGN データシートの表示（PDF） - Linear Technology
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LTC4221IGN
Linear Technology
LTC4221IGN Datasheet PDF : 28 Pages
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LTC4221
ELECTRICAL CHARACTERISTICS The ● indicates specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC1 = 5V, VCC2 = 3.3V, unless otherwise noted.
SYMBOL
tP(FAULT-GATE)
tP(OV-GATE)
tP(FILTER-GATE)
tRESET
tP(ON-GATE)
PARAMETER
FAULT Low to GATEn Discharging
FBn OV Comparator Trip to GATEn
Discharging
Filter Comparator Trip to GATEn
Discharging
Circuit Breaker Reset Delay Time
Turn Off Propagation Delay
CONDITIONS
VFAULT = 3.3V to 0V
VFBn = 0V to 1V
VFILTER = 0V to 1.5V
VON1 < 0.4V to FAULT High
VONn ≤ 0.821V to GATEn Discharging
MIN
●
●
●
●
●
TYP
MAX UNITS
15
35
μs
18
35
μs
15
35
μs
15
30
μs
15
35
μs
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.
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.
TYPICAL PERFOR A CE CHARACTERISTICS
ICC1 vs Temperature
6
VCC2 = 1V
5
VCC1 = 13.5V
4
VCC1 = 12V
3
VCC1 = 5V
2
VCC1 = 2.7V
1
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
4221 G01
VCC2(UVL) vs Temperature
0.815
TIMER = 0.3V
0.810
0.805
0.800
RISING
0.795
0.790
0.785
0.780
0.775
FALLING
0.770
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
4221 G04
ICC2 vs Temperature
0.200
VCC1 = 13.5V
0.175
VCC2 = 13.5V
0.150
0.125
VCC2 = 12V
0.100
0.075
0.050
0.025
VCC2 = 5V
VCC2 = 3.3V
VCC2 = 1V
0
– 50 – 25
0 25 50 75
TEMPERATURE (°C)
100 125
4221 G02
|ISENSE2(IN)| vs VSENSE2
10000
1000
100
10
1
0.1
0.01
VCC1 = 2.7V, VCC2 = 1V
0.001
VCC1 = 5V, VCC2 = 3.3V
VCC1 = 13.5V, VCC2 = 13.5V
0.0001
0 2 4 6 8 10 12
VSENSE2 (V)
4221 G05
4
VCC1(UVL) vs Temperature
2.52
TIMER = 0.3V
2.50
RISING
2.48
2.46
2.44
2.42
2.40
FALLING
2.38
2.36
– 50 – 25
0 25 50 75
TEMPERATURE (°C)
100 125
4221 G03
VSENSE(FC) vs VCC1
102.0
VCC2 = VCC1
TA = 25°C
101.5
101.0
100.5
100.0
99.5
0 2 4 6 8 10 12 14 16
VCC1 (V)
4221 G06
4221fa
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