LP2952/LP2952A/LP2953/LP2953A
All Voltage Options
(Continued)
Electrical Characteristics
(Continued)
Limits in standard typeface are for T
J
= 25˚C,
bold typeface
applies over the full operating temperature range. Limits are guar-
anteed by production testing or correlation techniques using standard Statistical Quality Control (SQC) methods. Unless other-
wise specified: V
IN
= V
O
(NOM) + 1V, I
L
= 1 mA, C
L
= 2.2 µF for 5V parts and 4.7µF for 3.3V parts. Feedback pin is tied to V
Tap pin, Output pin is tied to Output Sense pin.
Parameter
Conditions
Typical LP2952AI, LP2953AI, LP2952I, LP2953I,
LP2952AI-3.3,
LP2952I-3.3,
LP2953AI-3.3,
LP2953I-3.3
LP2953AM
(Notes 16, 17)
Min
Max
40
60
30
20
0.01
150
−60
−85
15
−80
−95
(Referred to V
REF
)
−110
−160
1
2
250
400
−35
−25
−55
−40
−80
−95
−110
−160
30
20
1
2
250
400
−35
−25
−55
−40
mV
−7.5
−10
6
V
IN
(S/D) = 0V to 5V
LP2953AM
10
10
−30
−50
−30
−75
30
50
30
75
7.5
10
7.5
12
mV
−30
−50
LP2953AM
10
0.01
LP2953AM
0.01
150
LP2953AM
150
−30
−75
30
50
30
75
1
2
1
2.2
250
400
250
420
250
400
mV
1
2
µA
−30
−50
30
50
nA
−7.5
−10
7.5
10
mV
−30
−50
−30
50
7.5
10
−7.5
−10
7.5
10
mV
nA
mV
mV
mV
mV
µA
Min
Max
40
60
mA
nA
20
Units
Symbol
I
B
(FB)
Feedback Pin Bias
Current
I
O
(SINK) Output “OFF” Pulldown
Current
I
OH
V
OL
V
THR
(MAX)
V
THR
(MIN)
HYST
V
OS
HYST
I
B
DROPOUT DETECTION COMPARATOR
Output “HIGH” Leakage V
OH
= 30V
Output “LOW” Voltage
Upper Threshold
Voltage
Lower Threshold
Voltage
Hysteresis
Input Offset
Voltage
Hysteresis
Input Bias
Current
V
IN
= V
O
(NOM) − 0.5V
I
O
(COMP) = 400 µA
SHUTDOWN INPUT
±
3
AUXILIARY COMPARATOR (LP2953 Only)
V
OS
Input Offset Voltage
(Referred to V
REF
)
LP2953AM
HYST
I
B
Hysteresis
Input Bias Current
V
IN
(COMP) = 0V to 5V
±
3
±
3
6
10
−7.5
−10
−7.5
−12
I
OH
Output “HIGH” Leakage V
OH
= 30V
V
IN
(COMP) = 1.3V
V
OL
Output “LOW” Voltage
V
IN
(COMP) = 1.1V
I
O
(COMP) = 400 µA
5
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