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| 型號： | LP3991TLX-1.2 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準電壓源/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)： | 5/14頁 |
| 文件大?。?/td> | 266K |
| 代理商： | LP3991TLX-1.2 |
Electrical Characteristics con't.
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
Max
Enable Control Characteristics
I
EN
(Note 15)
V
EN
Input
Maximum Input Current at
V
EN
= 0V, V
IN
= 3.6V
V
EN
= V
IN
= 3.6V
V
IN
= 1.65V to 3.6V
V
IN
= 1.65V to 3.6V
0.001
3
μA
5.5
V
IL
V
IH
Timing Characteristics
T
ON
Low Input Threshold
0.4
V
High Input Threshold
0.95
V
Turn On Time (Note 14)
To 95% Level
V
IN(MIN)
to 3.6V
V
OUT
≤
2.0V
V
OUT
> 2.0V
100
μs
140
Line Transient Response |
δ
V
OUT
|
T
rise
= T
fall
= 30μs (Note 14)
δ
V
IN
= 600mV
6
mV
(pk - pk)
Transient
Response
Load Transient Response |
δ
V
OUT
| T
rise
= T
fall
= 1μs
(Note 14)
I
OUT
= 0 mA to 300mA
I
OUT
= 1mA to 300mA
I
OUT
= 300mA to 1mA
I
OUT
= 0mA to 200mA
I
OUT
= 1mA to 200mA
I
OUT
= 200mA to 1mA
I
OUT
= 0mA to 150mA
I
OUT
= 1mA to 150mA
I
OUT
= 150mA to 1mA
140
mV
110
80
110
80
60
100
70
50
0
600
Overshoot on Start-up
In-Rush Current (Note 14)
2
%
mA
I
IR
1000
Note 1:
Absolute Maximum Ratings are limits beyond which damage can occur. Operating Ratings are conditions under which operation of the device is
guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see the Electrical
Characteristics tables.
Note 2:
All Voltages are with respect to the potential at the GND pin.
Note 3:
For further information on these packages please refer to the following application notes,AN-1112 Micro SMD Wafer Level Chip Scale Package.
Note 4:
Internal thermal shutdown circuitry protects the device from permanent damage.
Note 5:
The human body model is 100pF discharged through a 1.5k
resistor into each pin. The machine model is a 200pF capacitor discharged directly into
each pin.
Note 6:
The maximum ambient temperature (T
A(max)
) is dependant on the maximum operating junction temperature (T
= 125°C), the maximum power
dissipation of the device in the application (P
), and the junction to ambient thermal resistance of the part / package in the application (
θ
JA
), as given by the
following equation: T
A(max)
= T
J(max-op)
- (θ
JA
× P
D(max)
).
Note 7:
Junction to ambient thermal resistance is dependant on the application and board layout. In applications where high maximum power dissipation is
possible, special care must be paid to thermal dissipation issues in board design.
Note 8:
Full details can be found in JESD61-7
Note 9:
All limits are guaranteed. All electrical characteristics having room-temperature limits are tested during production at T
= 25°C or correlated using
Statistical Quality Control methods. Operation over the temperature specification is guaranteed by correlating the electrical characteristics to process and
temperature variations and applying statistical process control.
Note 10:
V
IN(MIN)
= V
OUT(NOM)
+ 0.5V or 1.65V, whichever is greater. (See post DC/DC convertor example in application information section).
Note 11:
Dropout voltage is voltage difference between input and output at which the output voltage drops to 100mV below its nominal value. This parameter is
only specified for output voltages above 1.8V.
Note 12:
The device maintains the regulated output voltage without a load.
Note 13:
Short circuit current is measured with V
OUT
pulled to 0V.
Note 14:
This electrical specification is guaranteed by design.
Note 15:
Enable Pin has an internal 1.2M
typical, resistor connected to GND.
5
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| LP3991TLX-2.0/NOPB | 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP3991TLX-2.5/NOPB | 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP3991TLX-2.8/NOPB | 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP3991TLX-3.0/NOPB | 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP3992IMF-1.5 | 制造商:Texas Instruments 功能描述:IC, V REG 30MA, SHUTDOWN, SMD, 3992 制造商:Texas Instruments 功能描述:LDO, FIXED, 1.5V, 30mA, 5.2V, SOT-23-5; Primary Input Voltage:5.2V; Output Voltage Fixed:1.5V; Dropout Voltage Vdo:400V; No. of Pins:5; Output Current:30mA; Operating Temperature Min:-40C; Operating Temperature Max:125C ;RoHS Compliant: Yes |
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