Datasheet

LP2960
www.ti.com
SNVS112C APRIL 1999REVISED APRIL 2013
Electrical Characteristics (continued)
Limits in standard typeface are for T
J
= 25°C, and limits in boldface type apply over the full operating temperature range.
Unless otherwise specified: C
IN
= 4.7 μF, V
IN
= V
O
(NOM) + 1V, I
L
= 1 mA, C
OUT
= 10 μF for 5V parts or C
OUT
= 22 μF for 3.3V
parts, Feedback pin is tied to V
TAP
pin, Output pin is tied to Sense pin, V
S/D
= 2V.
LP2960AI
(1)
LP2960I
(1)
Symbol Parameter Conditions Typ Units
Min Max Min Max
V
IN
V
O
30 30
I
L
= 1 mA 12
50 50
250 250
I
L
= 100 mA 180
350 350
Dropout Voltage
(4)
mV
350 350
I
L
= 200 mA 260
450 450
600 600
I
L
= 500 mA 470
800 800
I
GND
600 600
I
L
= 1 mA 450 μA
750 750
4.0 4.0
I
L
= 100 mA 2.6
5.0 5.0
Ground Pin Current
(5)
8 8
I
L
= 200 mA 2.5 mA
10 10
35 35
I
L
= 500 mA 21
40 40
I
GND
Ground Pin Current at V
IN
= V
O
(NOM) 0.5V 3 3
1.8 mA
Dropout
(5)
I
L
= 100 μA 5 5
Ground Pin Current at
V
SD
1.1V 300 400 400 μA
Shutdown
(5)
I
LIMIT
1500 1500
Current Limit R
L
= 0.5 1000 mA
1600 1600
Thermal Regulation See
(6)
0.05 0.2 0.2 %/W
e
n
C
OUT
= 10 μF 300
Output Noise Voltage
μV
@ I
L
= 100 mA C
OUT
= 47 μF 210
RMS
(10 Hz–100kHz)
C
OUT
= 47 μF
(7)
130
V
REF
1.220 1.250 1.210 1.260
Reference Voltage 1.235 V
1.210 1.265 1.195 1.275
Reference Voltage 0.1 0.2
See
(8)
0.05 %
Line Regulation 0.30 0.4
Reference Voltage 0.6 1.2
I
REF
= 0–200 μA 0.45 %
Load Regulation 0.9 1.5
Reference Voltage
See
(9)
20 ppm/°C
Temperature Coefficient
I
B
(FB) Feedback Pin Bias 50 50
20 nA
Current 70 70
(4) Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV below the value measured with a
1V differential. At very low values of programmed output voltage, the input voltage minimum of 2V (2.3V over temperature) must be
observed.
(5) Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the ground pin current,
output load current, and current through the external resistive divider (if used).
(6) Thermal regulation is the change in output voltage at a time T after a change in power dissipation, excluding load or line regulation
effects. Specifications are for a 400 mA load pulse at V
IN
= V
O
(NOM) + 15V (6W pulse) for T = 10 ms.
(7) Connect a 0.1 μF capacitor from the output to the feedback pin.
(8) Two separate tests are performed for reference voltage line regulation, one covering 2.5V V
IN
V
O
(NOM) + 1V and the other test for
V
O
(NOM) + 1V V
IN
30V.
(9) Output or reference voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
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