LR1117A 查看數據表（PDF） - Leshan Radio Company,Ltd
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LR1117A Datasheet PDF : 9 Pages
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LESHAN RADIO COMPANY, LTD.
LR1117A
Electrical Characteristics
Operating Conditions: VIN ≤ 7V, TJ = 25°C unless otherwise specified.
The • denotes specifications which apply over the specified operating temperature range.
Parameter
Conditions
Reference Voltage3
Output Voltage4
Line Regulation1,2
Load Regulation1,2
1.5V ≤ (VIN – VOUT) ≤ 7V,
•
10mA ≤ IOUT ≤ 1A
10mA ≤ IOUT ≤ 1A
LR1117A-1.8, 3.3V ≤ VIN ≤ 8.8V
•
LR1117A-2.5, 4V ≤ VIN ≤ 9.5V
•
LR1117A-2.85, 4.35V ≤ VIN ≤ 9.85V •
LR1117A-3.3, 4.8V ≤ VIN ≤ 10.3V
•
LR1117A-5, 6.5V ≤ VIN ≤ 12V
•
(VOUT + 1.5V) ≤ VIN ≤ 12V, IOUT = 10mA •
(VIN – VOUT) = 2V, 10mA ≤ IOUT ≤ 1A
•
Dropout Voltage
∆VREF = 1%, IOUT = 1A
•
Current Limit
(VIN – VOUT) = 2V
•
Adjust Pin Current3
•
Adjust Pin Current Change3,4 1.5V ≤ (VIN – VOUT) ≤ 7V,
•
10mA ≤ IOUT ≤ 1A
Minimum Load Current
1.5V ≤ (VIN – VOUT) ≤ 15V
•
Quiescent Current
VIN = VOUT + 1.25V
•
Ripple Rejection
f = 120Hz, COUT = 22µF Tantalum,
(VIN – VOUT) = 3V, IOUT = 1A
Thermal Regulation
TA = 25°C, 30ms pulse
Temperature Stability
•
Long-Term Stability
RMS Output Noise
(% of VOUT)
Thermal Resistance, Junction
to Case
TA = 125°C, 1000hrs.
TA = 25°C, 10Hz ≤ f ≤ 10kHz
SOT-223
TO-252, TO-220
Thermal Shutdown
Junction Temperature
Thermal Shutdown
Hysteresis
Min.
1.225
(-2%)
1.764
2.450
2.793
3.234
4.900
1.1
10
60
Typ.
1.250
1.8
2.5
2.85
3.3
5.0
0.005
0.05
1.100
1.5
35
0.2
4
72
0.004
0.5
0.03
0.003
15
3
155
10
Max.
1.275
(+2%)
Units
V
1.836 V
2.550 V
2.907 V
3.366 V
5.100 V
0.2
%
0.5
%
1.200 V
A
120 µA
5
µA
mA
13 mA
dB
0.02 %/W
%
1.0
%
%
°C/W
°C/W
°C
°C
Notes:
1. See thermal regulation specifications for changes in output voltage due to heating effects. Load and line regulation are
measured at a constant junction temperature by low duty cycle pulse testing.
2. Line and load regulation are guaranteed up to the maximum power dissipation (18W). Power dissipation is determined by
input/output differential and the output current. Guaranteed maximum output power will not be available over the full input/
output voltage range.
3. LR1117A only.
4. Output current must be limited to meet the absolute maximum ratings of the part.
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