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| 型號(hào)： | LP5951MFX-1.5 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類(lèi)： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Micropower, 150mA Low-Dropout CMOS Voltage Regulator |
| 中文描述： | 1.5 V FIXED POSITIVE LDO REGULATOR, 0.35 V DROPOUT, PDSO5 |
| 封裝： | SOT-23, 5 PIN |
| 文件頁(yè)數(shù)： | 4/10頁(yè) |
| 文件大?。?/td> | 608K |
| 代理商： | LP5951MFX-1.5 |
Electrical Characteristics
(Notes 2, 7)
Enable Control Characteristics
(Continued)
Symbol
I
EN
Parameter
Conditions
Typical
Limit
Units
μA
Min
-1
Max
1
Maximum Input Current
at V
EN
Input
Low Input Threshold
(shutdown)
High Input Threshold
(enable)
0V
≤
V
EN
≤
V
IN
, V
IN
= 5.5V
V
IL
V
IN
= 1.8..5.5V
0.4
V
V
IH
V
IN
= 1.8..5.5V
0.9
V
Transient Characteristics
Symbol
V
OUT
Parameter
Conditions
Typical
±
2
Limit
Units
mV
Min
Max
Dynamic Line Transient V
IN
= V
OUT(NOM)
+ 1V to
V
OUT(NOM)
+ 1V + 0.6V in 30μs, no
load
I
OUT
= 0mA to 150mA in 10μs
I
OUT
= 150mA to 0mA in 10μs
I
OUT
= 1mA to 150mA in 1μs
I
OUT
= 150mA to 1mA in 1μs
Nominal conditions
I
OUT
= 1mA
V
OUT
Dynamic Load
Transient
-30
20
-50
40
10
30
mV
mV
mV
mV
mV
μs
V
OUT
T
ON
Overshoot on Startup
Turn on time
Output Capacitor, Recommended Specification
Symbol
Parameter
Conditions
Capacitance (Note 9)
I
OUT
= 150mA, V
IN
= 5.0V
V
OUT
<
2.8V
V
OUT
≥
2.8V
ESR
Value
Limit
(Note 8)
Units
Min
Max
C
OUT
Output Capacitance
1.0
1.5
0.7
1.1
0.003
47
47
μF
μF
0.300
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the component may 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:
Internal thermal shutdown circuitry protects the device from permanent damage. Thermal shutdown engages at T
J
= 160C (typ.) and disengages at T
J
=
140C (typ.).
Note 4:
The Human body model is a 100pF capacitor discharged through a 1.5k
resistor into each pin. The machine model is a 200pF capacitor discharged
directly into each pin. (MIL-STD-883 3015.7)
Note 5:
In applications where high power dissipation and/or poor package thermal resistance is present, the maximum ambient temperature may have to be
derated. Maximum ambient temperature (T
A-MAX
) is dependent on the maximum operating junction temperature (T
= 125C), the maximum power
dissipation of the device in the application (P
D-MAX
), 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
PD-MAX
).
Note 6:
Junction-to-ambient thermal resistance is highly application and board-layout dependent. In applications where high maximum power dissipation exists,
special attention must be paid to thermal dissipation issues in board design.
Note 7:
Min and Max limits are guaranteed by design, test, or statistical analysis. Typical numbers are not guaranteed, but do represent the most likely norm.
Note 8:
Min and Max limits are guaranteed by design
Note 9:
The capacitor tolerance should be 30% or better over temperature. The full operating conditions for the application should be considered when selecting
a suitable capacitor to ensure that the minimum value of capacitance is always met. Recommended capacitor type is X7R. However, dependent on application, X5R,
Y5V, and Z5U can also be used. The shown minimum limit represents real minimum capacitance, including all tolerances and must be maintained over temperature
and dc bias voltage (See capacitor section in Applications Hints)
Note 10:
Dropout voltage is defined as the input to output voltage differential at which the output voltage falls to 100mV below the nominal output voltage. This
specification does not apply for input voltages below 1.8V.
L
www.national.com
4
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| LP5951MFX-2.0 | 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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP5951MFX-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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP5951MFX-2.5 | 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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP5951MFX-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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP5951MFX-2.8 | 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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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