参数资料
| 型号： | LM4041CFTA |
| 厂商： | Diodes Inc |
| 文件页数： | 5/7页 |
| 文件大小： | 0K |
| 描述： | IC VREF SHUNT PREC 1.225V SOT-23 |
| 其它图纸： | Programmable SOT-23-3 Pin Out |
| 标准包装： | 1 |
| 基准类型： | 旁路，精度 |
| 输出电压： | 1.225V |
| 容差： | ±0.5% |
| 温度系数： | 100ppm/°C |
| 输入电压： | 最高 10V |
| 通道数： | 1 |
| 电流 - 阴极： | 60µA |
| 电流 - 输出： | 12mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-236-3，SC-59，SOT-23-3 |
| 供应商设备封装： | SOT-23 |
| 包装： | 标准包装 |
| 产品目录页面： | 1477 (CN2011-ZH PDF) |
| 其它名称： | LM4041CFDKR |
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCES
Application Information
In a conventional shunt regulator application ( Figure 1 ), an
external series resistor (R S ) is connected between the
supply voltage, V S , and the LM4041.
V S
I R + I L
R S
I R
V S
I R +
I L
I L
V R
R S
I R
I L
V R
V O
Figure 2
Figure 1
R S determines the current that flows through the load (I L )
and the LM4041 (I R ). Since load current and supply
voltage may vary, R S should be small enough to supply at
least the minimum acceptable I R to the LM4040 even
when the supply voltage is at its minimum and the load
current is at its maximum value. When the supply voltage
The LM4041-ADJ’s output voltage can be adjusted to any
value in the range of 1.24V through 10V. The output
voltage is set by the ratio of two external feedback
resistors as shown in Figure 2 and the internal reference
voltage (V R ).
The output voltage is found using the equation:
V O R × ? ? 1 +
R 2 ?
R 1 ? ?
is at its maximum and I L is at its minimum, R S should be
large enough so that the current flowing through the
LM4040 is less than 12 mA.
R S is determined by the supply voltage, (V S ), the load and
= V
?
?
?
operating current, (I L and I Q ), and the LM4040’s reverse
breakdown voltage, V R .
Printed circuit board layout considerations
LM4041 with fixed output voltage in the SOT23 package
has the die attached to pin 1, which results in an electrical
R S =
V S ? V R
I L + I R
contact between pin 2 and pin 1. Therefore, pin 1 of the
SOT23 package must be left floating or connected to
pin 2.
The LM4041 comes in two varients:
? LM4041 with fixed 1.225V output
? LM4041_ADJ with variable output voltage.
LM4041 with fixed output voltage in the SC70-5 package
have the die attached to pin 2, which results in an
electrical contact between pin 2 and pin 1. Therefore, pin
2 must be left floating or connected to pin1.
LM4041
Document number: DS32020 Rev. 8 - 2
5 of 7
September 2011
? Diodes Incorporated
相关PDF资料 |
PDF描述 |
|---|---|
| LM4050AEX3-2.5/V+T | IC VREF SHUNT PREC 2.5V SC70-3 |
| LM431CCZXA | IC VREF SHUNT ADJ TO-92-3 |
| LM431SACMLX | IC VREF SHUNT ADJ SOT-89-3 |
| LM431SAIMFX | IC VREF SHUNT ADJ SOT-23-3 |
| LM431SBCMFX_G | IC VREF SHUNT ADJ SOT-23F |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4041CICT-1.2 | 功能描述:基准电压& 基准电流 Precision micropower shunt volt reference 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 |
| LM4041CIDBZR | 功能描述:基准电压& 基准电流 Adjustable Precision Mcrpwr Shunt .5% acc 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 |
| LM4041CIDBZRG4 | 功能描述:基准电压& 基准电流 Adjustable Precision Mcrpwr Shunt .5% acc 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 |
| LM4041CIDBZT | 功能描述:基准电压& 基准电流 Adjustable Precision Mcrpwr Shunt .5% acc 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 |
| LM4041CIDBZTG4 | 功能描述:基准电压& 基准电流 Adjustable Precision Mcrpwr Shunt .5% acc 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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