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参数资料
| 型号： | L5953 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 1.2 A SWITCHING REGULATOR, 425 kHz SWITCHING FREQ-MAX, PDSO36 |
| 封装： | LEAD FREE, SOP-36 |
| 文件页数： | 7/31页 |
| 文件大小： | 420K |
| 代理商： | L5953 |
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L5953
Functional description
2.6
PWM step down voltage regulator
The switching regulator (
Figure 11.) inside the L5953 is a voltage control mode (also known
as a direct duty cycle) Buck regulator: the error signal coming from the error amplifier is
compared with a sawtooth to set on and off times of the power switch.
The feedforward control is introduced to get a quickly response to input voltage changes: the
sawtooth has a fixed frequency and an amplitude variable with the battery voltage.
Continuous mode operation is recommended in order to reduce the stress of the output
capacitor and of the free-wheeling diode.
2.6.1
Error amplifier and compensation network
The error amplifier (EA) is a voltage amplifier whose non-inverting input is fixed to the
reference voltage (1.275V bandgap voltage) and whose inverting input and output are
externally available for feedback and frequency compensation.
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| L5994A | 1 A DUAL SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PQFP32 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L5953_07 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Multiple switching voltage regulator |
| L5954 | 功能描述:低压差稳压器 - LDO Airbag App Specific Voltage Regulator RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| L5955 | 功能描述:多媒体杂项 Multifunction Voltage Regulator RoHS:否 制造商:Texas Instruments 类型: 通道数量: 转换速率:540 Mbps 分辨率: 封装 / 箱体:SOIC-16 封装:Tube |
| L5956 | 功能描述:多媒体杂项 Multifunction Voltage Regulator RoHS:否 制造商:Texas Instruments 类型: 通道数量: 转换速率:540 Mbps 分辨率: 封装 / 箱体:SOIC-16 封装:Tube |
| L5956_11 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Multifunction voltage regulator for car radio |
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