LT1120I(RevB) Ver la hoja de datos (PDF) - Linear Technology
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LT1120I Datasheet PDF : 12 Pages
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LT1120
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full
operating temperature range, otherwise specifications are at TA = 25°C. Tj = 25°C
PARAMETER
CONDITIONS
MIN TYP MAX
Shutdown Pin Current
Feedback Bias Current
VIN = 1.4V
25
15
40
Minimum Load Current
Short-Circuit Current
Comparator
VIN = 36V
VIN = 36V
1
5
300 400
Offset Voltage
Bias Current
Gain
Power Supply Rejection
Output Sink Current
Saturation Voltage
Input Voltage Range
Response Time
VIN = 36V
VIN = 36V (Note 2)
∆VOUT = 29V, RL = 20k
4.5V ≤ VS ≤ 36V
VIN = 4.5V
IOUT = 1mA
3
7
15
40
2000 10000
80
96
10
18
0.4
0.6
0
VIN – 1
5
Leakage Current
2
UNITS
µA
nA
µA
mA
mV
nA
V/V
dB
mA
V
V
µs
µA
ELECTRICAL CHARACTERISTICS
The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Reference
Reference Voltage
Line Regulation
Load Regulation
Output Source Current
Output Sink Current
Regulator
4.5V ≤ VIN ≤ 36V
4.5V ≤ VIN ≤ 36V
– 2mA ≤ IREF ≤ 2mA, VIN = 12V
VIN = 5V
VIN = 5V
q 2.40 2.50 2.55
V
q
0.01 0.02 %/V
q
0.4
0.8
%
q2
mA
q2
mA
Supply Current
Output Current
Load Regulation
Line Regulation
Dropout Voltage
Feedback Sense Voltage
Feedback Bias Current
VIN = 6V, IOUT ≤ 100µA
VIN = 36V, IOUT ≤ 100µA
VIN = 12V, IOUT = 125mA
(VIN – VOUT) ≥ 1V, VIN ≥ 6V
(VIN – VOUT) ≥ 1V, VIN ≥ 6V
6V ≤ VIN ≤ 36V
IOUT = 100µA
IOUT = 125mA
VIN = 12V
q
65
95
µA
q
85
100
µA
q
11
20
mA
q 125
mA
q
1
%
q
0.02 %/V
q
0.06
V
q
0.85
V
q 2.38
2.5
2.57
V
q
50
nA
Minimum Load Current
Short-Circuit Current
VIN = 36V
VIN = 36V
q
50
µA
q
300
400
mA
3
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