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LP2951-02BM-TR数据手册
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Micrel, Inc. LP2950/2951
September 2008 4
M9999-091208
Parameter Condition Min Typ Max Units
Note 5, I
L
= 100µA
50
80
150
mV
mV
Dropout Voltage
Note 5, I
L
= 100mA
380
450
600
mV
mV
I
L
= 100µA 100
150
200
µA
µA
Ground Current
I
L
= 100mA 8
12
14
mA
mA
Dropout Current V
IN
= 4.5V, I
L
= 100µA 180
250
310
µA
µA
Current Limit V
OUT
= 0V 160
220
220
mA
mA
Thermal Regulation
Note 13
0.05 0.20 %/W
10Hz to 100kHz, C
L
= 1µF 430 µV
RMS
10Hz to 100kHz, C
L
= 200µF 160 µV
RMS
Output Noise
10Hz to 100kHz, C
L
= 3.3µF,
0.01µF bypass Feedback to Output
100 µV
RMS
LP295x-02 (±0.5%)
1.220
1.200
1.235
1.250
1.260
V
V
LP295x-03 (±1%)
1.210
1.200
1.235
1.260
1.270
V
V
Reference Voltage
LP2951-4.8 (±1%)
1.210
1.200
1.235
1.260
1.270
V
V
LP295x-02 (±0.5%), Note 7 1.190
1.270
V
LP295x-03 (±1%), Note 7 1.185
1.285
V
Reference Voltage
LP2951-4.8 (±1%), Note 7 1.185
1.285
V
Feedback Bias Current 20
40
60
nA
nA
LP295x-02 (±0.5%), Note 12
20 ppm/°C
LP295x-03 (±1%), Note 12
50 ppm/°C
Reference Voltage
LP2951-4.8 (±1%), Note 12
50 ppm/°C
Feedback Bias Current
Temperature Coefficient
0.1 nA/°C
Output Leakage Current V
OH
= 30V 0.01
1.00
2.00
µA
µA
Output Low Voltage (Flag) V
IN
= 4.5V, I
OL
= 200µA 150
250
400
mV
mV
Upper Threshold Voltage
Note 6 40
25
60
mV
mV
Lower Threshold Voltage
Note 6
75
95
140
mV
mV
Hysteresis
Note 6
15 mV

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