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LP2953AI 数据表(PDF) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部件名 LP2953AI
功能描述  Adjustable Micropower Low-Dropout Voltage Regulators
PDF  22 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 NSC - National Semiconductor (TI)

LP2953AI 数据表(HTML) 5 Page - National Semiconductor (TI)

  LP2953AI Datasheet HTML 1Page - National Semiconductor (TI) LP2953AI Datasheet HTML 2Page - National Semiconductor (TI) LP2953AI Datasheet HTML 3Page - National Semiconductor (TI) LP2953AI Datasheet HTML 4Page - National Semiconductor (TI) LP2953AI Datasheet HTML 5Page - National Semiconductor (TI) LP2953AI Datasheet HTML 6Page - National Semiconductor (TI) LP2953AI Datasheet HTML 7Page - National Semiconductor (TI) LP2953AI Datasheet HTML 8Page - National Semiconductor (TI) LP2953AI Datasheet HTML 9Page - National Semiconductor (TI) Next Button
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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 =VO(NOM) + 1V, IL = 1 mA, CL = 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,
LP2952AI-3.3,
LP2953AI-3.3,
LP2953AM
(Notes 16, 17)
LP2952I, LP2953I,
LP2952I-3.3,
LP2953I-3.3
Units
Min
Max
Min
Max
I
B(FB)
Feedback Pin Bias
Current
20
40
40
nA
60
60
I
O(SINK)
Output “OFF” Pulldown
Current
(Note 9)
30
30
mA
20
20
DROPOUT DETECTION COMPARATOR
I
OH
Output “HIGH” Leakage V
OH = 30V
0.01
1
1
µA
22
V
OL
Output “LOW” Voltage
V
IN =VO(NOM) − 0.5V
I
O(COMP) = 400 µA
150
250
250
mV
400
400
V
THR
(MAX)
Upper Threshold
Voltage
(Note 14)
−60
−80
−35
−80
−35
mV
−95
−25
−95
−25
V
THR
(MIN)
Lower Threshold
Voltage
(Note 14)
−85
−110
−55
−110
−55
mV
−160
−40
−160
−40
HYST
Hysteresis
(Note 14)
15
mV
SHUTDOWN INPUT (Note 15)
V
OS
Input Offset
(Referred to V
REF)
±3
−7.5
7.5
−7.5
7.5
mV
Voltage
−10
10
−10
10
HYST
Hysteresis
6
mV
I
B
Input Bias
V
IN(S/D) = 0V to 5V
10
−30
30
−30
−50
−30
50
nA
Current
−50
50
LP2953AM
10
−30
30
−75
75
AUXILIARY COMPARATOR (LP2953 Only)
V
OS
Input Offset Voltage
(Referred to V
REF)
±3
−7.5
7.5
−7.5
−10
7.5
10
mV
−10
10
LP2953AM
±3
−7.5
7.5
−12
12
HYST
Hysteresis
6
mV
I
B
Input Bias Current
V
IN(COMP) = 0V to 5V
10
−30
30
−30
−50
30
50
nA
−50
50
LP2953AM
10
−30
30
−75
75
I
OH
Output “HIGH” Leakage V
OH = 30V
0.01
1
1
2
µA
V
IN(COMP) = 1.3V
2
LP2953AM
0.01
1
2.2
V
OL
Output “LOW” Voltage
V
IN(COMP) = 1.1V
150
250
250
400
mV
I
O(COMP) = 400 µA
400
LP2953AM
150
250
420
www.national.com
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