Datasheet

LP2960
SNVS112C APRIL 1999REVISED APRIL 2013
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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
DROPOUT DETECTION COMPARATOR
I
OH
1 1
Output HIGH Leakage V
OH
= 30V 0.01 μA
2 2
V
OL
V
IN
= V
O
(NOM) 1V 250 250
Output LOW Voltage 125 mV
I
O
(COMP) = 400 μA 400 400
V
THR
(max) 80 35 80 35
Upper Threshold Voltage See
(10)
60 mV
100 25 100 25
V
THR
(min) 130 70 130 70
Lower Threshold Voltage See
(10)
85 mV
200 35 200 35
HYST Hysteresis See
(10)
25 mV
SHUTDOWN INPUT
V
OS
18 18 18 18
Input Offset Voltage (Referred to V
REF
) ±5 mV
24 24 24 24
HYST Hysteresis (Referred to V
REF
) 10 mV
I
B
60 60 60 60
Input Bias Current V
S/D
= 0–5V 20 nA
100 100 100 100
I
OUT
(S/D) Regulator Output Current 12 12
See
(11)
3 μA
in Shutdown 20 20
AUXILIARY COMPARATOR
V
OS
15 15 15 15
Input Offset Voltage (Referred to V
REF
) ±5 mV
20 20 20 20
HYST Hysteresis (Referred to V
REF
) 10 mV
I
B
60 60 60 60
Input Bias Current V
COMP
= 0–5V 20 nA
100 100 100 100
I
OH
1 1
Output HIGH Leakage V
OH
= 30V, V
COMP
= 1.3V 0.01 μA
2 2
V
OL
250 250
Output LOW Voltage V
COMP
= 1.1V, I
O
= 400 μA 125 mV
400 400
(10) Dropout detection comparator threshold voltages are expressed in terms of a voltage differential measured at the Feedback terminal
below the nominal reference voltage, which is the reference voltage measured with V
IN
= V
O
(NOM) + 1V. To express these thresholds in
terms of output voltage change, multiply by the error amplifier gain which is V
O
/V
REF
= (R1 + R2)/R2 (see Basic Application Circuit).
(11) Vshutdown 1.1V, V
IN
< 30V, V
OUT
= 0V.
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