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參數(shù)資料
| 型號(hào)： | LTC4357HMS8#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | LEAD FREE, PLASTIC, MSOP-8 |
| 文件頁(yè)數(shù)： | 8/14頁(yè) |
| 文件大小： | 723K |
| 代理商： | LTC4357HMS8#TRPBF |
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LTC4357
4357fd
electrical characteristics
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VOUT = VDD, VDD = 9V to 80V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VDD
Operating Supply Range
l
9
80
V
IDD
Supply Current
l
0.5
1.25
mA
IIN
IN Pin Current
VIN = VOUT ±1V
l
150
350
500
A
IOUT
OUT Pin Current
VIN = VOUT ±1V
l
80
210
A
DVGATE
External N-Channel Gate Drive
(VGATE – VIN)
VDD, VOUT = 20V to 80V
VDD, VOUT = 9V to 20V
l
10
4.5
12
6
15
V
IGATE(UP)
External N-Channel Gate Pull-Up Current VGATE = VIN, VIN – VOUT = 0.1V
l
–14
–20
–26
A
IGATE(DOWN)
External N-Channel Gate Pull-Down
Current in Fault Condition
VGATE = VIN + 5V
l
1
2
A
tOFF
Gate Turn-Off Time
VIN – VOUT = 55mV
–|
––1V,
VGATE – VIN < 1V, CGATE = 0pF
l
300
500
ns
DVSD
Source-Drain Regulation Voltage
(VIN – VOUT)
VGATE – VIN = 2.5V
l
10
25
55
mV
Note 2: All currents into pins are positive, all voltages are referenced to
GND unless otherwise specified.
Note 3: An internal clamp limits the GATE pin to a minimum of 10V above
IN or 100V above GND. Driving this pin to voltages beyond this clamp may
damage the device.
typical perForMance characteristics
VDD Current (IDD vs VDD)
IN Current (IIN vs VIN)
OUT Current (IOUT vs VOUT)
VDD (V)
0
I DD
(A) 400
600
80
4357 G01
200
0
20
40
60
800
VDD = VOUT = VIN ± 1V
VIN (V)
0
I IN
(A) 200
300
80
4357 G02
100
0
20
40
60
400
VDD = VOUT = VIN + 1V
VDD = VOUT = VIN – 1V
VOUT (V)
0
I OUT
(A)
60
120
80
4357 G03
0
20
40
60
180
30
90
150
VDD = VOUT = VIN + 1V
VDD = VOUT = VIN – 1V
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