LP2952 National Semiconductor, LP2952 Datasheet - Page 5

• Manufacturer Part Number: LP2952
• Description: Adjustable Micropower Low-Dropout Voltage Regulators
• Manufacturer: National Semiconductor

DROPOUT DETECTION COMPARATOR
I
V
V
(MAX)
V
(MIN)
HYST
SHUTDOWN INPUT (Note 15)
V
HYST
I
AUXILIARY COMPARATOR (LP2953 Only)
V
HYST
I
I
V
Symbol
OH
B
B
OH
Limits in standard typeface are for T
anteed by production testing or correlation techniques using standard Statistical Quality Control (SQC) methods. Unless other-
wise specified: V
Tap pin, Output pin is tied to Output Sense pin.
OL
THR
THR
OS
OS
OL
Electrical Characteristics
Note 1: Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the de-
vice outside of its rated operating conditions.
Note 2: The maximum allowable power dissipation is a function of the maximum junction temperature, T
and the ambient temperature, T
Output “HIGH”
Leakage
Output “LOW” Voltage
Upper Threshold
Voltage
Lower Threshold
Voltage
Hysteresis
Input Offset
Voltage
Hysteresis
Input Bias
Current
Input Offset Voltage
Hysteresis
Input Bias Current
Output “HIGH”
Leakage
Output “LOW” Voltage
Parameter
IN
= V
O
(NOM) + 1V, I
A
. The maximum allowable power dissipation at any ambient temperature is calculated using the equation for P(MAX),
V
V
I
(Note 14)
(Note 14)
(Note 14)
(Referred to V
V
(Referred to V
V
V
V
V
I
O
O
J
OH
IN
IN
IN
OH
IN
IN
(COMP) = 400 µA
(COMP) = 400 µA
= 25˚C, bold typeface applies over the full operating temperature range. Limits are guar-
L
(S/D) = 0V to 5V
(COMP) = 0V to 5V
(COMP) = 1.3V
(COMP) = 1.1V
= V
= 1 mA, C
= 30V
= 30V
O
(Continued)
Conditions
(NOM) − 0.5V
REF
REF
L
= 2.2 µF for 5V parts and 4.7µF for 3.3V parts. Feedback pin is tied to V
)
)
LP2953AM
LP2953AM
LP2953AM
LP2953AM
LP2953AM
5
Typical
0.01
0.01
0.01
150
−60
−85
150
150
15
±
10
10
±
±
10
10
6
6
3
3
3
−110
−160
−7.5
−7.5
−7.5
Min
−80
−95
−10
−30
−50
−30
−75
−10
−12
−30
−50
−30
−75
LP2952AI-3.3,
LP2953AI-3.3,
(Notes 16, 17)
LP2953AM
LP2952AI,
LP2953AI,
J
(MAX), the junction-to-ambient thermal resistance,
Max
250
400
−35
−25
−55
−40
250
400
250
420
7.5
7.5
7.5
2.2
10
30
50
30
75
10
12
30
50
30
75
1
2
1
2
1
LP2952I, LP2953I,
−110
−160
−7.5
−7.5
Min
−80
−95
−10
−30
−50
−10
−30
−50
LP2952I-3.3,
LP2953I-3.3
Max
250
400
−35
−25
−55
−40
−30
250
400
7.5
7.5
10
50
10
30
50
www.national.com
1
2
1
2
Units
mV
mV
mV
mV
mV
mV
mV
mV
mV
J–A
µA
nA
nA
µA
,
.