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參數(shù)資料
| 型號： | LP2951ACN |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 固定／可調(diào)正電壓單路輸出LDO穩(wěn)壓器 |
| 英文描述： | Micropower Voltage Regulators |
| 中文描述： | FIXED/ADJUSTABLE POSITIVE LDO REGULATOR, 0.45 V DROPOUT, PDIP8 |
| 封裝： | PLASTIC, DIP-8 |
| 文件頁數(shù)： | 20/23頁 |
| 文件大?。?/td> | 240K |
| 代理商： | LP2951ACN |
LP2950, LP2951, NCV2951
http://onsemi.com
6
DEFINITIONS
Dropout Voltage The input/output voltage differential
at which the regulator output no longer maintains regulation
against further reductions in input voltage. Measured when
the output drops 100 mV below its nominal value (which is
measured at 1.0 V differential), dropout voltage is affected
by junction temperature, load current and minimum input
supply requirements.
Line Regulation The change in output voltage for a
change in input voltage. The measurement is made under
conditions of low dissipation or by using pulse techniques
such that average chip temperature is not significantly
affected.
Load Regulation The change in output voltage for a
change in load current at constant chip temperature.
Maximum Power Dissipation The maximum total
device dissipation for which the regulator will operate
within specifications.
Bias Current Current which is used to operate the
regulator chip and is not delivered to the load.
Output Noise Voltage The RMS ac voltage at the
output, with constant load and no input ripple, measured
over a specified frequency range.
Leakage Current Current drawn through a bipolar
transistor collectorbase junction, under a specified
collector voltage, when the transistor is “off”.
Upper Threshold Voltage Voltage applied to the
comparator input terminal, below the reference voltage
which is applied to the other comparator input terminal,
which causes the comparator output to change state from a
logic “0” to “1”.
Lower Threshold Voltage Voltage applied to the
comparator input terminal, below the reference voltage
which is applied to the other comparator input terminal,
which causes the comparator output to change state from a
logic “1” to “0”.
Hysteresis The difference between Lower Threshold
voltage and Upper Threshold voltage.
25°C
Figure 2. Quiescent Current
,OUTPUT
VOL
TAGE
(V)
V
out
,OUTPUT
VOL
TAGE
(V)
V
out
-50
5.00
0
6.0
0.1
10
TA, AMBIENT TEMPERATURE (°C)
Vin, INPUT VOLTAGE (V)
LP2950/LP2951
BIAS
CURRENT
(mA)
IL, LOAD CURRENT (mA)
Figure 3. 5.0 V Dropout Characteristics over
Load
Figure 4. Output Voltage versus Temperature
1.0
10
100
1.0
2.0
3.0
4.0
5.0
6.0
0
50
100
150
1.0
0.1
0.01
5.0
4.0
3.0
2.0
1.0
0
4.99
4.98
4.97
4.96
4.95
RL = 50 kW
RL = 50 W
LP2951C
TA = 25°C
LP2951C
200
,OUTPUT
VOL
TAGE
(V)
V
out
0
6.0
Vin, INPUT VOLTAGE (V)
Figure 5. 5.0 V Dropout Characteristics with
RL = 50 W
1.0
2.0
3.0
4.0
5.0
3.0
2.0
1.0
0
6.0
5.0
4.0
125°C
40°C
LP2951C
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LP2951CM-3.3 | 150mA ADJUSTABLE VOLTAGE REGULATOR |
| LP2951CM-5 | 150mA ADJUSTABLE VOLTAGE REGULATOR |
| LP2951 | 100 mA, Low Power Low Dropout Voltage Regulator(100mA,低功耗，低壓差穩(wěn)壓器) |
| LP2S3TBNN | PUSHBUTTON SWITCH, SPST, MOMENTARY, 0.005A, 5VDC, THROUGH HOLE-STRAIGHT |
| LP2S2GRYREDN | PUSHBUTTON SWITCH, SPST, MOMENTARY, 0.005A, 5VDC, THROUGH HOLE-STRAIGHT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP2951ACN NOPB | 制造商:National Semiconductor 功能描述:LDO Regulator Pos 1.24V to 29V 0.1A 8-Pin PDIP Rail |
| LP2951ACN | 制造商:Texas Instruments 功能描述:V REG LDO ADJ +1.2429V 2951 DIP8 |
| LP2951ACN/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 |
| LP2951ACN3.0 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:100 mA, Low Power Low Dropout Voltage Regulator |
| LP2951ACN-3.0 | 功能描述:低壓差穩(wěn)壓器 - LDO 5V 100mA Low Power 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 |
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