LP2951_10 Datasheet, PDF (3/8 Pages) Fairchild Semiconductor – Adjustable Micro Power Voltage Regulator

LP2951
Electrical Characteristics
(Refer to the test circuit, Ta = 25°C, unless otherwise specified, )
Parameter
ALL VOLTAGE OPTIONS
Output Voltage Temperature Coefficient
Line Regulation (Note2)
Load Regulation (Note2)
Dropout Voltage
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
Symbol
ΔV/ΔT
ΔV
ΔV
VD
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
VIN = (Vo + 1)V, IL = 100uA 1.235 1.26 1.285 V
(Note3)
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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