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参数资料
| 型号： | LP2951 |
| 厂商： | ON SEMICONDUCTOR |
| 元件分类： | 线性稳压 |
| 英文描述： | 100 mA, Low Power Low Dropout Voltage Regulator(100mA,低功耗，低压差稳压器) |
| 中文描述： | 100毫安，低功耗，低压差稳压器（100mA的，低功耗，低压差稳压器） |
| 文件页数： | 21/24页 |
| 文件大小： | 244K |
| 代理商： | LP2951 |
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 collector-base 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
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LP2951-01AJ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Fixed & Adjustable Voltage Regulator |
| LP2951-02BJ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Fixed & Adjustable Voltage Regulator |
| LP295102BM | 制造商:Micrel Inc 功能描述: |
| LP2951-02BM | 功能描述:IC REG LDO ADJ .1A 8SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:3,000 系列:- 稳压器拓扑结构:正，固定式 输出电压:3.8V 输入电压:最高 16V 电压 - 压降（标准）:0.3V @ 80mA 稳压器数量:1 电流 - 输出:80mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:带卷 (TR) 其它名称:MIC5203-3.8BM5TRMIC5203-3.8BM5TR-ND |
| LP2951-02BM TR | 功能描述:IC REG LDO ADJ .1A 8-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:3,000 系列:- 稳压器拓扑结构:正，固定式 输出电压:3.8V 输入电压:最高 16V 电压 - 压降（标准）:0.3V @ 80mA 稳压器数量:1 电流 - 输出:80mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:带卷 (TR) 其它名称:MIC5203-3.8BM5TRMIC5203-3.8BM5TR-ND |
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