LT4356HS-3 データシートの表示（PDF） - Analog Devices
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LT4356HS-3 Datasheet PDF : 24 Pages
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LT4356-3
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 12V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
VCC
Operating Voltage Range
ICC
VCC Supply Current
VSHDN = Float
VSHDN = 0V, IN+ = 1.3V
LT4356C, LT4356I
LT4356H, LT4356MP
l
4
80
V
l
1
1.5
mA
7
25
µA
l
7
30
µA
l
7
40
µA
IR
Reverse Input Current
VSNS = VCC = –30V, SHDN Open
VSNS = VCC = VSHDN = –30V
l
0.3
1
mA
l
0.8
2
mA
ΔVGATE GATE Pin Output High Voltage
VCC = 4V; (VGATE – VOUT)
80V ≥ VCC ≥ 8V; (VGATE – VOUT)
l 4.5
l 10
8
V
16
V
IGATE(UP) GATE Pin Pull-Up Current
VGATE = 12V; VCC = 12V; LT4356C, LT4356I, LT4356H
l –4
–23
–36
µA
VGATE = 12V; VCC = 12V; LT4356MP
l –4
–23
–38
µA
VGATE = 48V; VCC = 48V
l –4.5
–30
–50
µA
IGATE(DN) GATE Pin Pull-Down Current
Overvoltage, VFB = 1.4V, VGATE = 12V
l 75
150
mA
Overcurrent, VCC – VSNS = 120mV, VGATE = 12V
l
4
10
mA
Shutdown Mode, VSHDN = 0V, VGATE = 12V
l 1.5
5
mA
VFB
FB Pin Servo Voltage
VGATE = 12V, VOUT = 12V; LT4356C, LT4356I
VGATE = 12V, VOUT = 12V; LT4356H, LT4356MP
l 1.225 1.25 1.275
V
l 1.215 1.25 1.275
V
IFB
FB Pin Input Current
VFB = 1.25V
l
0.3
1
µA
ΔVSNS Overcurrent Fault Threshold
ΔVSNS = (VCC – VSNS), VCC = 12V; LT4356C, LT4356I
l 45
50
55
mV
ΔVSNS = (VCC – VSNS), VCC = 12V; LT4356H
l 42.5
50
55
mV
ΔVSNS = (VCC – VSNS), VCC = 12V; LT4356MP
l 42.5
50
56
mV
ΔVSNS = (VCC – VSNS), VCC = 48V; LT4356C, LT4356I
ΔVSNS = (VCC – VSNS), VCC = 48V; LT4356H
l 46
l 43
l
51
51
56
56
mV
mV
ΔVSNS = (VCC – VSNS), VCC = 48V; LT4356MP
43
51
57
mV
ISNS
SNS Pin Input Current
VSNS = VCC = 12V to 48V
l
5
10
22
µA
ILEAK
FLT, EN Pins Leakage Current
AOUT Pin Leakage Current
FLT, EN = 80V
AOUT = 80V
l
2.5
µA
4.5
µA
ITMR
TMR Pin Pull-up Current
VTMR = 1V, VFB = 1.5V, (VCC – VOUT) = 0.5V
VTMR = 1V, VFB = 1.5V, (VCC – VOUT) = 75V
VTMR = 1.3V, VFB = 1.5V, (VCC – VOUT) = 75V
VTMR = 1V, ΔVSNS = 60mV, (VCC – VOUT) = 0.5V
VTMR = 1V, ΔVSNS = 60mV, (VCC – VOUT) = 80V
l –1.5 –2.5
–4
µA
l –44
–50
–56
µA
l –3.5 –5.5 –8.5
µA
l –2.5 –4.5 –6.5
µA
l –195 –260 –325
µA
TMR Pin Pull-down Current
VTMR = 1V, VFB = 1V, ΔVSNS = 0V
l 1.5
2.2
2.7
µA
VTMR
TMR Pin Thresholds
FLT From High to Low, VCC = 5V to 80V
l 1.22 1.25 1.28
V
ΔVTMR
VIN+
IIN+
Early Warning Period
IN+ Pin Threshold
IN+ Pin Input Current
From FLT going Low to GATE Going Low, VCC = 5V to 80V l 80
100
120
mV
l 1.22 1.25 1.28
V
VIN+ = 1.25V
l
0.3
1
µA
VOL
FLT, EN, AOUT Pins Output Low
ISINK = 2mA
ISINK = 0.1mA
l
2
8
V
l
300
800
mV
IOUT
OUT Pin Input Current
VOUT = VCC = 12V; LT4356C, LT4356I, LT4356H
l
VOUT = VCC = 12V; LT4356MP
l
VOUT = VCC = 12V, VSHDN = 0V
l
200
300
µA
200
310
µA
6
14
mA
ΔVOUT OUT Pin High Threshold
ΔVOUT = VCC – VOUT; EN From Low to High
l 0.25
0.5
0.7
V
Rev D
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