LP2952 Datasheet, PDF (6/24 Pages) National Semiconductor (TI) – Adjustable Micropower Low-Dropout Voltage Regulators

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.
Symbol
Parameter
Conditions
Typical LP2952AI, LP2953AI, LP2952I, LP2953I,
LP2952AI-3.3,
LP2952I-3.3,
LP2953AI-3.3,
LP2953I-3.3
LP2953AM
(Notes 16, 17)
Units
Min
Max
Min
Max
I_B(FB)
Feedback Pin Bias
Current
20
40
40
nA
60
60
I_O(SINK) Output “OFF” Pulldown (Note 9)
Current
30
30
mA
20
20
DROPOUT DETECTION COMPARATOR
I_OH
Output “HIGH” Leakage V_OH = 30V
0.01
1
2
1
µA
2
V_OL
V_THR
(MAX)
Output “LOW” Voltage
Upper Threshold
Voltage
V_IN = V_O(NOM) − 0.5V
I_O(COMP) = 400 µA
(Note 14)
150
−60
−80
−95
250
250
mV
400
400
−35
−80
−35
mV
−25
−95
−25
V_THR
(MIN)
Lower Threshold
Voltage
(Note 14)
−85
−110
−160
−55
−110
−55
mV
−40
−160
−40
HYST Hysteresis
(Note 14)
15
mV
SHUTDOWN INPUT (Note 15)
V_OS
Input Offset
Voltage
(Referred to V_REF)
±3
−7.5
−10
7.5
−7.5
7.5
mV
10
−10
10
HYST Hysteresis
6
mV
I_B
Input Bias
Current
V_IN(S/D) = 0V to 5V
10
−30
−50
30
−30
−30
nA
50
−50
50
LP2953AM 10
−30
30
−75
75
AUXILIARY COMPARATOR (LP2953 Only)
V_OS
Input Offset Voltage
(Referred to V_REF)
±3
LP2953AM ±3
−7.5
−10
−7.5
7.5
−7.5
7.5
mV
10
−10
10
7.5
−12
12
HYST Hysteresis
6
mV
I_B
Input Bias Current
V_IN(COMP) = 0V to 5V
10
−30
−50
30
−30
30
nA
50
−50
50
LP2953AM 10
−30
30
−75
75
I_OH
Output “HIGH” Leakage V_OH = 30V
0.01
1
V_IN(COMP) = 1.3V
2
LP2953AM 0.01
1
1
µA
2
2.2
V_OL
Output “LOW” Voltage V_IN(COMP) = 1.1V
150
I_O(COMP) = 400 µA
LP2953AM 150
250
250
mV
400
400
250
420
5
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