LP2950
ELECTRICAL CHARACTERISTICS (continued) (V = V + 1.0 V, I = 100 µA, C = 1.0 µF, T = 25°C [Note 1], unless
in
O
O
O
J
otherwise noted.)
Characteristic
+1.0 V to 30 V) [Note 2]
Symbol
Min
Typ
Max
Unit
Line Regulation (V = V
in
Reg
%
O(nom)
line
LP2950C–XX/LP2951C/LP2951C–XX
LP2950AC–XX/LP2951AC/LP2951AC–XX
–
–
0.08
0.04
0.20
0.10
Load Regulation (I = 100 µA to 100 mA)
Reg
%
O
load
LP2950C–XX/LP2951C/LP2951C–XX
LP2950AC–XX/LP2951AC/LP2951AC–XX
–
–
0.13
0.05
0.20
0.10
Dropout Voltage
V – V
I
mV
O
I
O
I
O
= 100 µA
= 100 mA
–
–
30
350
80
450
Supply Bias Current
I
CC
I
O
I
O
= 100 µA
= 100 mA
–
–
93
4.0
120
12
µA
mA
Dropout Supply Bias Current (V = V
in
O
– 0.5 V,
I
–
110
170
µA
O(nom)
CCdropout
I
= 100 µA) [Note 2]
Current Limit (V Shorted to Ground)
O
I
–
–
220
300
mA
%/W
Limit
Reg
Thermal Regulation
0.05
0.20
thermal
Output Noise Voltage (10 Hz to 100 kHz) [Note 3]
V
n
µVrms
C
C
= 1.0 µF
= 100 µF
–
–
126
56
–
–
L
L
LP2951A/LP2951AC ONLY
Reference Voltage (T = 25°C)
LP2951C/LP2951C–XX
LP2951AC/LP2951AC–XX
V
V
V
V
J
ref
1.210
1.220
1.235
1.235
1.260
1.250
Reference Voltage (T = –40 to +125°C)
V
ref
J
LP2951C/LP2951C–XX
LP2951AC/LP2951AC–XX
1.200
1.200
–
–
1.270
1.260
Reference Voltage (T = –40 to +125°C)
V
ref
J
I
O
= 100 µA to 100 mA, V = 23 to 30 V
in
LP2951C/LP2951C–XX
LP2951AC/LP2951AC–XX
1.185
1.190
–
–
1.285
1.270
Feedback Pin Bias Current
ERROR COMPARATOR
Output Leakage Current (V
I
–
15
40
nA
FB
= 30 V)
I
–
–
0.01
150
45
1.0
250
–
µA
mV
mV
mV
mV
OH
lkg
Output Low Voltage (V = 4.5 V, I
in
= 400 µA)
V
V
OL
OL
Upper Threshold Voltage (V = 6.0 V)
in
40
–
thu
Lower Threshold Voltage (V = 6.0 V)
in
V
60
95
–
thl
hy
Hysteresis (V = 6.0 V)
in
V
–
15
SHUTDOWN INPUT
Input Logic Voltage
V
shtdn
V
Logic “0” (Regulator “On”)
Logic “1” (Regulator “Off”)
0
2.0
–
–
0.7
30
Shutdown Pin Input Current
I
µA
µA
shtdn
V
shtdn
V
shtdn
= 2.4 V
= 30 V
–
–
35
450
50
600
Regulator Output Current in Shutdown Mode
(V = 30 V, V = 2.0 V, V = 0, Pin 6 Connected to Pin 7)
I
off
–
3.0
10
in shtdn
O
NOTES: 1. Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
2. V is the part number voltage option.
O(nom)
3. Noise tests on the LP2951 are made with a 0.01 µF capacitor connected across Pins 7 and 1.
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