LP2950, LP2951, NCV2951
ELECTRICAL CHARACTERISTICS (continued)
(V
in
= V
O
+ 1.0 V, I
O
= 100
mA,
C
O
= 1.0
mF,
T
A
= 25°C [Note 8],
unless otherwise noted.)
Characteristic
Line Regulation (V
in
= V
O(nom)
+1.0 V to 30 V) (Note 9)
LP2950C−XX/LP2951C/LP2951C−XX/NCV2951C*
LP2950AC−XX/LP2951AC/LP2951AC−XX/NCV2951AC*
Load Regulation (I
O
= 100
mA
to 100 mA)
LP2950C−XX/LP2951C/LP2951C−XX/NCV2951C*
LP2950AC−XX/LP2951AC/LP2951AC−XX/NCV2951AC*
Dropout Voltage
I
O
= 100
mA
I
O
= 100 mA
Supply Bias Current
I
O
= 100
mA
I
O
= 100 mA
Dropout Supply Bias Current (V
in
= V
O(nom)
− 0.5 V,
I
O
= 100
mA)
(Note 9)
Current Limit (V
O
Shorted to Ground)
Thermal Regulation
Output Noise Voltage (10 Hz to 100 kHz) (Note 10)
C
L
= 1.0
mF
C
L
= 100
mF
LP2951A/LP2951AC Only
Reference Voltage (T
A
= 25°C)
LP2951C/LP2951C−XX/NCV2951C*
LP2951AC/LP2951AC−XX/NCV2951AC*
Reference Voltage (T
A
= − 40 to +125°C)
LP2951C/LP2951C−XX/NCV2951C*
LP2951AC/LP2951AC−XX/NCV2951AC*
Reference Voltage (T
A
= − 40 to +125°C)
I
O
= 100
mA
to 100 mA, V
in
= 23 to 30 V
LP2951C/LP2951C−XX/NCV2951C*
LP2951AC/LP2951AC−XX/NCV2951AC*
Feedback Pin Bias Current
Error Comparator
Output Leakage Current (V
OH
= 30 V)
Output Low Voltage (V
in
= 4.5 V, I
OL
= 400
mA)
Upper Threshold Voltage (V
in
= 6.0 V)
Lower Threshold Voltage (V
in
= 6.0 V)
Hysteresis (V
in
= 6.0 V)
Shutdown Input
Input Logic Voltage
Logic “0” (Regulator “On”)
Logic “1” (Regulator “Off”)
Shutdown Pin Input Current
V
shtdn
= 2.4 V
V
shtdn
= 30 V
Regulator Output Current in Shutdown Mode
(V
in
= 30 V, V
shtdn
= 2.0 V, V
O
= 0, Pin 6 Connected to Pin 7)
V
shtdn
0
2.0
I
shtdn
−
−
I
off
−
35
450
3.0
50
600
10
mA
−
−
0.7
30
mA
V
I
lkg
V
OL
V
thu
V
thl
V
hy
−
−
40
−
−
0.01
150
45
60
15
1.0
250
−
95
−
mA
mV
mV
mV
mV
V
ref
1.210
1.220
V
ref
1.200
1.200
V
ref
1.185
1.190
I
FB
−
−
−
15
1.285
1.270
40
nA
−
−
1.270
1.260
V
1.235
1.235
1.260
1.250
V
V
Symbol
Reg
line
−
−
Reg
load
−
−
V
I
− V
O
−
−
I
CC
−
−
I
CCdropout
I
Limit
Reg
thermal
V
n
−
−
126
56
−
−
−
−
−
93
4.0
110
220
0.05
120
12
170
300
0.20
mA
mA
mA
mA
%/W
mVrms
30
350
80
450
0.13
0.05
0.20
0.10
mV
0.08
0.04
0.20
0.10
%
Min
Typ
Max
Unit
%
6. The Junction−to−Ambient Thermal Resistance is determined by PCB copper area per Figure 29.
7. ESD data available upon request.
8. Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
9. V
O(nom)
is the part number voltage option.
10. Noise tests on the LP2951 are made with a 0.01
mF
capacitor connected across Pins 7 and 1.
*NCV prefix is for automotive and other applications requiring site and change control.
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