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參數(shù)資料
| 型號： | LP3997MMX-3.3 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Micropower 250mA CMOS LDO Regulator with Error Flag / Power-On-Reset |
| 中文描述： | 3.3 V FIXED POSITIVE LDO REGULATOR, 0.4 V DROPOUT, PDSO8 |
| 封裝： | MSOP-8 |
| 文件頁數(shù)： | 4/11頁 |
| 文件大?。?/td> | 279K |
| 代理商： | LP3997MMX-3.3 |
Absolute Maximum Ratings
(Notes 2, 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Input Voltage
Output Voltage
-0.3 to 6.5V
-0.3 to (V
IN
+ 0.3V) to
6.5V (max)
-0.3 to (V
IN
+ 0.3V) to
6.5V (max)
SD Input Voltage
Junction Temperature
Lead/Pad Temp.
MSOP
Storage Temperature
Continuous Power Dissipation
Internally Limited (Note 3)
150C
260C
-65 to 150C
ESD (Note 4)
Human Body Model
Machine Model
2KV
200V
Operating Ratings
(Note 1)
Input Voltage
Shutdown Input Voltage
2V to 6V
0 to (V
IN
+ 0.3V) to
6.5V (max)
-40C to 125C
-40C to 85C
Junction Temperature
Ambient Temperature T
A
Range
(Note 5)
Thermal Properties
(Note 1)
Junction To Ambient Thermal
Resistance (Note 6)
θ
JA
(MSOP)
210C/W
Electrical Characteristics
Unless otherwise noted, V
=950mV, V
= V
+ 1.0V, C
IN
= 2.2 μF, I
= 1 mA, C
=2.2 μF and C
= 0.1 μF.
Typical values and limits appearing in normal type apply for T
J
= 27C. Limits appearing in
boldface
type apply over the full
temperature range for operation, 40 to +125C. (Note 11)
Symbol
Parameter
Conditions
Typ
Limit
Units
Min
2
-3
Max
6
+3
V
IN
V
OUT
Input Voltage
Output Voltage Tolerance
Line Regulation Error
V
%
Over full line and load regulation.
V
IN
= (V
OUT(NOM)
+ 1.0V) to 6.0V,
I
OUT
= 1mA
I
OUT
= 1mA to 250mA
(Notes 7, 8)
V
SD
= 950mV, I
OUT
= 0mA
V
SD
= 950mV, I
OUT
= 250mA
V
SD
= 0.4V
(Note 9)
0.05
%/V
Load Regulation Error
Load Current
Quiescent Current
20
μV/mA
μA
I
LOAD
I
Q
0
45
65
μA
0.002
650
I
SC
I
OUT
PSRR
Short Circuit Current Limit
Maximum Output Current
Power Supply Rejection Ratio
1000
mA
mA
250
f = 1kHz, I
OUT
= 1mA to 150mA
f = 10kHz, I
OUT
= 150mA
BW = 10Hz to
100kHz,
V
IN
= VOUT
nom
+1V
Temperature
Hysteresis
64
39
dB
e
N
Output noise Voltage (Note 8)
w/o C
NOISE
180
μV
RMS
C
NOISE
= 0.1μF
100
T
SHUTDOWN
Thermal Shutdown
160
20
C
Enable Control Characteristics
I
SD
Maximum Input Current at
V
SD
Input
V
IL
Low Input Threshold
V
IH
High Input Threshold
Error Flag Characteristics
V
TH
Power Good Trip Threshold
V
SD
= 0.0V
V
SD
= 6V (Note 10)
V
IN
= 2V to 6V
V
IN
= 2V to 6V
0.001
1
0.1
2
0.4
μA
V
V
0.95
V
IN
Rising
95
95
97
%V
OUT
L
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