參數(shù)資料
型號： LT4356HDE-2#TR
廠商： LINEAR TECHNOLOGY CORP
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO12
封裝： 4 X 3 MM, PLASTIC, MO-229WGED, DFN-12
文件頁數(shù)： 21/26頁
文件大?。?/td> 231K
代理商： LT4356HDE-2#TR
LT4356-1/LT4356-2
4
4356fa
The
l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. VCC = 12V unless otherwise noted.
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCC
Operating Voltage Range
l
480
V
ICC
VCC Supply Current
VSHDN = Float
l
1
1.5
mA
VSHDN = 0V, IN+ = 1.3V, LT4356-1
LT4356I-1, LT4356C-1
LT4356H-1
l
7
25
30
40
μA
VSHDN = 0V, IN+ = 1.3V, LT4356-2
LT4356I-2, LT4356C-2
LT4356H-2
l
60
70
100
250
μA
IR
Reverse Input Current
VSNS = VCC = –30V, SHDN Open
VSNS = VCC = VSHDN = –30V
l
0.3
0.8
1
2
mA
ΔVGATE
GATE Pin Output High Voltage
VCC = 4V; (VGATE – VOUT)
80V ≥ VCC ≥ 8V; (VGATE – VOUT)
l
4.5
10
8
16
V
IGATE(UP)
GATE Pin Pull-Up Current
VGATE = 12V; VCC = 12V
VGATE = 48V; VCC = 48V
l
–4
–4.5
–23
–30
–36
–50
μA
IGATE(DN)
GATE Pin Pull-Down Current
Overvoltage, VFB = 1.4V, VGATE = 12V
Overcurrent, VCC – VSNS = 120mV, VGATE = 12V
Shutdown Mode, VSHDN = 0V, VGATE = 12V
l
75
5
1.5
150
10
5
mA
VFB
FB Pin Servo Voltage
VGATE = 12V; VOUT = 12V, LT4356I, LT4356C
VGATE = 12V; VOUT = 12V, LT4356H
l
1.225
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, LT4356I, LT4356C
ΔVSNS = (VCC – VSNS), VCC = 12V, LT4356H
ΔVSNS = (VCC – VSNS), VCC = 48V, LT4356I, LT4356C
ΔVSNS = (VCC – VSNS), VCC = 48V, LT4356H
l
45
42.5
46
43
50
51
55
56
mV
ISNS
SNS Pin Input Current
VSNS = VCC = 12V to 48V
l
510
22
μA
ILEAK
FLT, EN Pins Leakage Current
AOUT Pin Leakage Current
FLT, EN = 80V
AOUT = 80V
l
2.5
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
VTMR = 1V, ΔVSNS = 60mV, (VCC – VOUT) = 0.5V
VTMR = 1V, ΔVSNS = 60mV, (VCC – VOUT) = 80V
l
–1.5
–44
–3.5
–2.5
–195
–2.5
–50
–5.5
–4.5
–260
–4
–56
–8.5
–6.5
–315
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
VGATE From Low to High, VCC = 5V to 80V
l
1.22
0.48
1.25
0.5
1.28
0.52
V
ΔVTMR
Early Warning Period
From FLT going Low to GATE going Low, VCC = 5V to 80V
l
80
100
120
mV
VIN+
IN+ Pin Threshold
l
1.22
1.25
1.28
V
IIN+
IN+ Pin Input Current
VIN+ = 1.25V
l
0.3
1
μA
IOUT
OUT Pin Input Current
VOUT = VCC = 12V
VOUT = VCC = 12V, VSHDN = 0V
l
200
6
300
14
μA
mA
ΔVOUT
OUT Pin High Threshold
ΔVOUT = VCC – VOUT; EN From Low to High
l
0.25
0.5
0.7
V
VSHDN
SHDN Pin Threshold
VCC = 12V to 48V
l
0.6
0.4
1.4
1.7
2.1
V
VOL
FLT, EN Pins Output Low
ISINK = 2mA
ISINK = 0.1mA
l
2
300
8
800
V
mV
AOUT Pin Output Low
ISINK = 2mA
ISINK = 0.1mA
l
2
200
8
400
V
mV
相關(guān)PDF資料
PDF描述
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