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参数资料
| 型号： | L5973DD |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 3.5 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | LEAD FREE, HSOP-8 |
| 文件页数： | 4/17页 |
| 文件大小： | 252K |
| 代理商： | L5973DD |
Application ideas
L5973D
12/17
When an output voltage below the internal reference (1.235V) is required, the circuit
reported in the figure 18 can been used. In this case the minimum voltage reachable is 0.6V
and can be easily calculated with the following formula:
VOUT = VFB - [(VREF - VFB)x(R2 / R1)]
If the load is not present, a resistor connected between VOUT and GND is required in order
to avoid that the voltage across COUT increases.
The value of this resistor has to be calculated taking into account that the current flowing
through this resistance has to be higher than the current flowing through R2.
Figure 18. Output voltage below the 1.235V internal voltage reference
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L5974AD | 功能描述:直流/直流开关调节器 2A SD switch reg BCD5 220nF 5V RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| L5974ADTR | 功能描述:直流/直流开关调节器 2A SD switch reg BCD5 220nF 5V RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| L5974D | 功能描述:直流/直流开关调节器 2.5A SD switch reg BCD5 220nF 5V RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| L5974DTR | 功能描述:直流/直流开关调节器 2.5A SD switch reg BCD5 220nF 5V RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| L5975AD | 功能描述:直流/直流开关调节器 2.5A SD switch reg BCD5 220nF 5V RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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