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参数资料
| 型号： | LM4132DMF-1.8 |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 固定正电压单路输出LDO稳压器 |
| 英文描述： | LM4132 SOT-23 Precision Low Dropout Voltage Reference; Package: SOT-23; No of Pins: 5 |
| 中文描述： | 1.8 V FIXED POSITIVE LDO REGULATOR, 0.4 V DROPOUT, PDSO5 |
| 封装： | SOT-23, 5 PIN |
| 文件页数： | 10/20页 |
| 文件大小： | 1138K |
| 代理商： | LM4132DMF-1.8 |
Application Information (Continued)
T
D = Temperature drift
V
REF = Nominal preset output voltage
V
REF_MIN
=
Minimum
output
voltage
over
operating
temperature range
V
REF_MAX
= Maximum output voltage over operating
temperature range
T = Operating temperature range.
The LM4132 features a low temperature drift of 10ppm
(max) to 30ppm (max), depending on the grade.
LONG TERM STABILITY
Long-term stability refers to the fluctuation in output voltage
over a long period of time (1000 hours). The LM4132 fea-
tures a typical long-term stability of 50ppm over 1000 hours.
The measurements are made using 5 units of each voltage
option, at a nominal input voltage (5V), with no load, at room
temperature.
EXPRESSION OF ELECTRICAL CHARACTERISTICS
Electrical characteristics are typically expressed in mV, ppm,
or a percentage of the nominal value. Depending on the
application, one expression may be more useful than the
other. To convert one quantity to the other one may apply the
following:
ppm to mV error in output voltage:
Where:
V
REF is in volts (V) and VERROR is in milli-volts (mV).
Bit error (1 bit) to voltage error (mV):
V
REF is in volts (V), VERROR is in milli-volts (mV), and n is the
number of bits.
mV to ppm error in output voltage:
Where:
V
REF is in volts (V) and VERROR is in milli-volts (mV).
Voltage error (mV) to percentage error (percent):
Where:
V
REF is in volts (V) and VERROR is in milli-volts (mV).
PRINTED CIRCUIT BOARD and LAYOUT
CONSIDERATIONS
References in SOT packages are generally less prone to PC
board mounting than devices in Small Outline (SOIC) pack-
ages. To minimize the mechanical stress due to PC board
mounting that can cause the output voltage to shift from its
initial value, mount the reference on a low flex area of the PC
board, such as near the edge or a corner.
The part may be isolated mechanically by cutting a U shape
slot on the PCB for mounting the device. This approach also
provides some thermal isolation from the rest of the circuit.
Bypass capacitors must be mounted close to the part.
Mounting bypass capacitors close to the part will reduce the
parasitic trace components thereby improving performance.
LM4132
www.national.com
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相关PDF资料 |
PDF描述 |
|---|---|
| LM4132DMF-3.0 | LM4132 SOT-23 Precision Low Dropout Voltage Reference; Package: SOT-23; No of Pins: 5 |
| LM4132DMF-3.3 | LM4132 SOT-23 Precision Low Dropout Voltage Reference; Package: SOT-23; No of Pins: 5 |
| LM4132DMFX-1.8 | LM4132 SOT-23 Precision Low Dropout Voltage Reference; Package: SOT-23; No of Pins: 5 |
| LM4132DMFX-3.0 | LM4132 SOT-23 Precision Low Dropout Voltage Reference; Package: SOT-23; No of Pins: 5 |
| LM4132DMFX-3.3 | LM4132 SOT-23 Precision Low Dropout Voltage Reference; Package: SOT-23; No of Pins: 5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4132DMF-2.0 | 功能描述:基准电压& 基准电流 RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
| LM4132DMF-2.0/NOPB | 功能描述:基准电压& 基准电流 RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
| LM4132DMF-2.5 | 功能描述:基准电压& 基准电流 RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
| LM4132DMF-2.5/ NOPB | 制造商:Texas Instruments 功能描述: |
| LM4132DMF-2.5/NOPB | 功能描述:基准电压& 基准电流 RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
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