參數(shù)資料
型號： LP3991TL-2.8
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： 300mA Linear Voltage Regulator for Digital Applications
中文描述： FIXED POSITIVE LDO REGULATOR, PBGA4
封裝： 0.963 X 1.446 MM, LEAD FREE, MICRO SMD-4
文件頁數(shù)： 4/14頁
文件大?。?/td> 266K
代理商： LP3991TL-2.8
Absolute Maximum Ratings
(Notes 1, 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
IN
, V
OUT
, Pins: Voltage to GND
V
EN
Pin: Voltage to GND
-0.3 to 6.5V
-0.3 to (V
IN
+ 0.3V) to 6.5V
(max)
150°C
Junction Temperature
Lead/Pad Temp. (Note 3)
Micro SMD
Storage Temperature
Continuous Power Dissipation
(Note 4)
ESD (Note 5)
Human Body Model
Machine Model
260°C
-65 to 150°C
Internally Limited
2KV
200V
Operating Ratings
(Note 1)
Input Voltage Range
Recommended Load Current
Junction Temperature
Ambient Temperature T
A
Range
(Note 6)
1.65 to 3.6V
300mA
-40°C to 125°C
-40°C to 85°C
Thermal Properties
(Note 1)
Junction To Ambient Thermal
Resistance(Note 7)
θ
JA
JEDEC Board
(Note 8)
θ
JA
4 Layer Board
88°C/W
160°C/W
Electrical Characteristics
Unless otherwise noted, V
EN
=950mV, V
IN
= V
OUT
+ 0.5V, or 1.8V, whichever is higher. C
IN
= 1μF, I
OUT
= 1.0mA, C
OUT
=4.7μF.
Typical values and limits appearing in normal type apply for T
A
= 25°C. Limits appearing in
boldface
type apply over the full junction
temperature range for operation, 40 to +125°C. (Note 9)
Symbol
Parameter
Conditions
Typ
Limit
Units
Min
1.65
-1.0
-3.0
-2.5
Max
3.6
1.0
3.0
2.5
V
IN
Δ
V
OUT
Input Voltage
(Note 10)
V
Output Voltage Tolerance
V
IN
= V
IN(NOM)
to
3.6V
I
LOAD
= 1 to
300mA
%
Temperature (T
J
)=
-25°C to +85°C
Line Regulation Error
V
IN
= V
OUT(NOM)
+0.5V to 3.6V,
I
OUT
= 1mA
I
OUT
= 1mA to 300mA
V
OUT
= 1.8V
0.05
1
%/V
Load Regulation Error
10
60
90
180
80
160
μV/mA
V
DO
Dropout Voltage(Note 11)
I
OUT
= 150mA
I
OUT
= 300mA
I
OUT
= 150mA
I
OUT
= 300mA
65
mV
125
V
OUT
= 2.8V
40
75
I
LOAD
I
Q
Minimum Load Current
(Note 12)
0
mA
Quiescent Current
V
EN
= 950mV, I
OUT
= 0mA
V
EN
= 950mV, I
OUT
= 300mA
V
EN
= 0.4V
V
IN
= 3.6V (Note 13)
50
100
225
μA
120
0.001
550
1.0
900
I
SC
I
OUT
PSRR
Short Circuit Current Limit
mA
Maximum Output Current
300
mA
Power Supply Rejection Ratio
(Note 14)
f = 1kHz, I
OUT
= 1mA to 300mA
65
dB
e
n
Output noise Voltage (Note 14)
BW = 10Hz to 100kHz,
V
IN
= 4.2V, C
OUT
= 4.7μF
Temperature
Hysteresis
280
μV
RMS
T
SHUTDOWN
Thermal Shutdown
160
20
°C
www.national.com
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