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参数资料
| 型号： | NCV2951CDR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 6/22页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 5V/ADJ .1A 8SOIC |
| 标准包装： | 2,500 |
| 稳压器拓扑结构： | 正，固定式或可调式 |
| 输出电压： | 5V，1.25 V ~ 29 V |
| 输入电压： | 最高 30V |
| 电压 - 压降（标准）： | 0.35V @ 100mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 100mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 带卷 (TR) |
| 其它名称： | NCV2951CDR2GOS |
LP2950, LP2951, NCV2951
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.
10
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.
6.0
LP2951C
5.0
T A = 25 ? C
1.0
0.1
4.0
3.0
2.0
1.0
R L = 50 k W
R L = 50 W
0.01
0.1
1.0
10
100
0
0
1.0
2.0
3.0
4.0
5.0
6.0
5.00
4.99
I L , LOAD CURRENT (mA)
Figure 2. Quiescent Current
6.0
5.0
V in , INPUT VOLTAGE (V)
Figure 3. 5.0 V Dropout Characteristics over
Load
LP2951C
4.0
4.98
3.0
4.97
2.0
4.96
1.0
25 ? C
4.95
- 50
0
50
100
LP2951C
150
200
0
0
125 ? C
1.0
? 40 ? C
2.0
3.0
4.0
5.0
6.0
T A , AMBIENT TEMPERATURE ( ? C)
Figure 4. Output Voltage versus Temperature
V in , INPUT VOLTAGE (V)
Figure 5. 5.0 V Dropout Characteristics with
R L = 50 W
http://onsemi.com
6
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