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参数资料
| 型号： | LM4040D30H5TA |
| 厂商： | DIODES INC |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 3 V, PDSO5 |
| 封装： | SC-70, 5 PIN |
| 文件页数： | 2/12页 |
| 文件大小： | 952K |
| 代理商： | LM4040D30H5TA |
Issue 4 - July 2008
10
Diodes Incorporated 2008
www.diodes.com
Application information
In a conventional shunt regulator application, an external series resistor (RS) is
connected between the supply voltage, VS, and the LM4040
RS determines the current that flows through the load (IL) and the LM4040 (IR).
Since load current and supply voltage may vary, RS should be small enough to
supply at least the minimum acceptable IR 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 is at its maximum and IL is at its minimum, RS should be
large enough so that the current flowing through the LM4040 is less than 15 mA.
RS is determined by the supply voltage, (VS), the load and operating current, (IL
and IR), and the LM4040’s reverse breakdown voltage, VR.
Printed circuit board layout considerations
LM4040s in the SOT23 package have the die attached to pin 1, which results in an electrical
contact between pin 2 and pin 3. Therefore, pin 1 of the SOT-23 package must be left floating or
connected to pin 2.
LM4040s in the SC75 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.
RS
VS
IR +
IL
IR
IL
VR
R
L
R
S
I
V
R
+
=
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4040D30IDBZR | 功能描述:基准电压& 基准电流 3-V Precision Micpwr Shunt 1% 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 |
| LM4040D30IDBZRG4 | 功能描述:基准电压& 基准电流 3-V Precision Micpwr Shunt 1% 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 |
| LM4040D30IDBZT | 功能描述:基准电压& 基准电流 3-V Precision Micpwr Shunt 1% 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 |
| LM4040D30IDBZTG4 | 功能描述:基准电压& 基准电流 3-V Precision Micpwr Shunt 1% 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 |
| LM4040D30IDCKR | 功能描述:基准电压& 基准电流 3-V Precision Micpwr Shunt 1% 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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