1640AH 查看數據表（PDF） - Linear Technology
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1640AH Datasheet PDF : 16 Pages
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LT1640AL/LT1640AH
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 2), VDD = 48V, VEE = 0V unless otherwise noted.
SYMBOL
VPG
VPGHY
IDRAIN
VOL
PARAMETER
Power Good Threshold
Power Good Threshold Hysteresis
Drain Input Bias Current
PWRGD Output Low Voltage
PWRGD Output Low Voltage
(PWRGD – DRAIN)
IOH
Output Leakage
ROUT
Power Good Output Impedance
(PWRGD to DRAIN)
AC
tPHLOV
tPHLUV
tPLHOV
tPLHUV
tPHLSENSE
tPHLPG
OV High to GATE Low
UV Low to GATE Low
OV Low to GATE High
UV High to GATE High
SENSE High to Gate Low
DRAIN Low to PWRGD Low
DRAIN Low to (PWRGD – DRAIN) High
tPLHPG
DRAIN High to PWRGD High
DRAIN High to (PWRGD – DRAIN) Low
CONDITIONS
MIN TYP MAX
VDRAIN – VEE, High to Low Transition
1.1
1.4
2.0
0.4
VDRAIN = 48V
q
10
50
500
PWRGD (LT1640AL), (VDRAIN – VEE) < VPG
IOUT = 1mA
q
IOUT = 5mA
0.48 0.8
1.50 3.0
PWRGD (LT1640AH), VDRAIN = 5V
IOUT = 1mA
q
0.75 1.0
PWRGD (LT1640AL), VDRAIN =48V,
q
VPWRGD = 80V
0.05
10
PWRGD (LT1640AH), (VDRAIN – VEE) < VPG q
2
6.5
Figures 1, 2
Figures 1, 3
Figures 1, 2
Figures 1, 3
Figures 1, 4
(LT1640AL) Figures 1, 5
(LT1640AH) Figures 1, 5
(LT1640AL) Figures 1, 5
(LT1640AH) Figures 1, 5
1.7
1.5
5.5
6.5
2
3
4
0.5
0.5
0.5
0.5
UNITS
V
V
µA
V
V
V
µA
kΩ
µs
µs
µs
µs
µs
µs
µs
µs
µs
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to VEE unless otherwise
specified.
TYPICAL PERFOR A CE CHARACTERISTICS
Supply Current vs Supply Voltage
1.8
TA = 25°C
1.7
1.6
1.5
1.4
1.3
1.2
1.1
0
0
20
40
60
80 100
SUPPLY VOLTAGE (V)
1640A G01
Supply Current vs Temperature
1.6
VDD = 48V
1.5
1.4
1.3
1.2
1.1
1.0
– 50 – 25 0
25 50
TEMPERATURE (°C)
75 100
1640A G02
Gate Voltage vs Supply Voltage
15
TA = 25°C
14
13
12
11
10
9
8
7
6
0
20
40
60
80 100
SUPPLY VOLTAGE (V)
1640A G03
3
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