LP2950CN-L-5-0 Exar Corporation, LP2950CN-L-5-0 Datasheet - Page 3

• Manufacturer Part Number: LP2950CN-L-5-0
• Description: 100mA Low Dropout Voltage Regulator
• Manufacturer: Exar Corporation

042408 Rev F
Note 1: Output or reference voltage temperature coefficients defined as the worst case voltage change divided by the t otal temperature range.
Note 2: Unless otherwise specified all limits guaranteed for T
tied to 5V tap and output tied to output sense (V
Note 3: Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes i n output voltage due to heating effects are
covered under the specification for thermal regulation.
Note 4: Line regulation for the LP2951 is tested at I
performance characteristics for line regulation versus temperature and load current.
Note 5: Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV below its nominal value measured at 1V differential. At
very low values of programmed output voltage, the minimum input supply voltage of 2V (2.3V over temperature) must be ta ken into account.
Note 6: V
Note 7: Comparator thresholds are expressed in terms of a voltage differential at the feedback terminal below the nomi nal reference voltage measured at 6V input. To
express these thresholds in terms of output voltage change, multiply by the error amplifier gain = V
voltage of 5V, the error output is guaranteed to go low when the output drops by 95 mV x 5V/1.235 = 384 mV. Thresholds remain constant as a percent of V
is varied, with the dropout warning occurring at typically 5% below nominal, 7.5% guaranteed.
Note 8: V
Note 9: All typical values are not guaranteed. The value could vary from lot to lot.
8-Pin Versions only (Continued)
Reference Voltage
Temperature
Coefficient
Feedback Pin Bias
Current
Temperature
Coefficient
Error Comparator
Output Leakage
Current
Output Low Voltage
Upper Threshold
Voltage
Lower Threshold
Voltage
Hysteresis
Shutdown Input
Input logic Voltage
Shut down Pin Input
Current
Regulator Output
Current in Shutdown
Thermal
Resistance θ
PARAMETER
REF
SHUTDOWN
≤V
JA
OUT
≥2V, V
≤(V
IN
- 1V), 2.3 ≤V
V
I
Low (Regulator ON)
High (Regulator OFF)
V
V
(Note 8)
8 Pin SOIC
3 Pin TO-92
V
(Note 7)
(Note 7)
(Note 7)
IN
OL
OH
IN
S
S
= 2.4V
= 30V
≤30V, V
= 400 μA
= 4.5V
= 30V
CONDITIONS
(Note 2)
OUT
IN
≤30V, 100μA≤I
=0, Feedback pin tied to 5V Tap.
LP2950-5 Low Dropout Linear Regulator
OUT
= 5V) and V
L
= 1mA. For I
40
2.0
L
≤100mA, T
Min.
J
LP2951AC
= 25°C, V
SHUTDOWN
131. 9
Max.
20
0.1
0.01
150
60
75
15
1.3
30
675
3
128. 4
L
= 100 μA and T
Typ.
J
≤T
IN
≤0.8V.
1
250
95
50
800
10
0.7
= 6V, I
JMAX
.
L
Min.
40
2.0
= 100 μA and C

J
= 125°C, line regulation is guaranteed by design to 0.2%. See typical
LP2951C
50
0.1
0.01
150
60
75
15
1.3
30
675
3
Typ.
OUT
Max.
L
1
250
95
0.7
50
800
10
= 1μF. Additional conditions for the 8-pin versions are feedback
/V
REF
= (R
1
+ R
2
)/R
ppm/°C
UNITS
nA/°C
°C/W
°C/W
mV
mV
mV
mV
μA
μA
μA
μA
2
V
V
. For example, at a programmed output
LP2950/51
© 2008 Exar Corporation
OUT
as V
OUT