LP2951 Fairchild Semiconductor, LP2951 Datasheet - Page 3

• Manufacturer Part Number: LP2951
• Description: The LP2951 is an adjustable micro power voltage regulator suitable for use in battery-powered systems
• Manufacturer: Fairchild Semiconductor

Electrical Characteristics
(Refer to the test circuit, Ta = 25°C, unless otherwise specified, )
Note :
1. Output or reference voltage temperature coefficient is defined as the worst case voltage change divided by the total
2. Regulation is measured at constant junction temperature , using pulse testing with a low duty cycle.
3. V
4. Threshold and hysteresis are expressed in terms of voltage differential at the Feedback terminal below the normal
5. Vshutdown ≤ 0.6 V , V
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
ref
temperature range.
reference . To express these thresholds in terms of output voltage change , multiply by the error amplifier gain
= VO / VREF = (R1 + R2) / R2 .
≤ V
out
≤ (V
in
- 1V), 2.5V ≤ V
OUT
=ON , Vshutdown ≥ 2.0 V, V
in
≤ 28V, 100uA ≤ I
Symbol
ΔV
V
V
V
V
V
V
V
I
I
ΔV
ΔV
V
HYS
REF
REF
I
SD
CL
OL
TH
SD
G
TL
/
D
ΔT
L
≤ 100mA, T
OUT
(Note1)
(Vo + 1)V ≤ V
I
100uA ≤ I
I
I
I
I
V
V
(Note3)
V
(Note4)
(Note4)
(Note4)
(Note5)
V
V
L
L
L
L
L
O
IN
IN
SD
SD
= 50mA
= 100uA
= 100mA
= 100uA
= 100mA
= OFF.
= 0V
= (Vo + 1)V, I
= (Vo - 0.5)V, I
= 2.4V
= 28V
A
≤ T
Conditions
L
AMAX
≤ 100mA
IN
≤ 28V
.
L
OL
= 100uA
=400uA
1.235 1.26 1.285
1.225 1.26 1.295
Min. Typ. Max.
110
0.6
25
-
-
-
-
-
-
-
-
-
-
-
-
165
150
450
1.3
50
60
75
15
30
-
-
-
-
-
-
150
600
140
220
400
140
100
750
0.4
0.3
2.0
7
-
-
-
ppm/°C
Unit
LP2951
mV
mV
mV
mA
mA
mV
mV
mV
uA
uA
uA
%
%
V
V
V
3