LP2951CM(2001) 데이터 시트보기 (PDF) - Fairchild Semiconductor
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LP2951CM Datasheet PDF : 10 Pages
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LP2951
Electrical Characteristics
(Refer to the test circuit, Ta = 25 °C, unless otherwise specified, )
Parameter
Symbol
ALL VOLTAGE OPTIONS
Output Voltage Temperature Coefficient ∆V/∆T
Line Regulation (Note2)
∆V
Load Regulation (Note2)
∆V
Dropout Voltage
VD
Ground Current
Current Limit
8-PIN VERSIONS ONLY
Reference Voltage
ERROR COMPARATOR
Output Low Voltage
High Threshold Voltage
Low Threshold Voltage
Hysteresis
SHUTDOWN INPUT
Shutdown Threshold Range
Shutdown Input Current
IG
ICL
VREF
VREF
VOL
VTH
VTL
VHYS
VSD
ISD
Conditions
Min. Typ. Max. Unit
(Note1)
(Vo + 1)V≤VIN≤28V
IL = 50mA
100uA≤ IL≤100mA
IL = 100uA
IL = 100mA
IL = 100uA
IL = 100mA
VO = 0V
- 50 - ppm/°C
-
- 0.4 %
-
- 0.3 %
-
- 150 mV
-
- 600 mV
-
- 140 uA
-
-
7 mA
110 165 220 mA
(Note3)
1.235 1.26 1.285 V
1.225 1.26 1.295 V
VIN = (Vo - 0.5)V, IOL =400uA - 150 400 mV
(Note4)
25 60 - mV
(Note4)
- 75 140 mV
(Note4)
- 15 - mV
(Note5)
VSD = 2.4V
VSD = 28V
0.6 1.3 2.0 V
- 30 100 uA
- 450 750 uA
Note :
1. Output or reference voltage temperature coefficient is defined as the worst case voltage change divided by the total
temperature range.
2. Regulation is measured at constant junction temperature , using pulse testing with a low duty cycle.
3. Vref ≤ Vout ≤ (Vin - 1V), 2.5V ≤ Vin ≤ 28V, 100uA ≤ IL ≤ 100mA, TA ≤ TAMAX .
4. Threshold and hysteresis are expressed in terms of voltage differential at the Feedback terminal below the normal
reference . To express these thresholds in terms of output voltage change , multiply by the error amplifier gain
= VO / VREF = (R1 + R2) / R2 .
5. Vshutdown ≤ 0.6 V , VOUT =ON , Vshutdown ≥ 2.0 V, VOUT = OFF.
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