产品概述
描述
L7983器件是一款降压型单片式开关稳压器，能够基于峰值电流模式架构提供高达300 mA DC。
输出电压可调范围为0.85V至VIN。较宽的输入电压范围和可调节的UVLO阈值符合12 V、24 V和48 V工业总线标准规范。
低功耗模式”（LCM）是专为在空闲模式下处于活动状态的应用而设计的，因此它可以在输出电压纹波受控的轻负载下最大限度地提高效率。“低噪声模式”(LNM)使开关频率在负载电流范围内保持恒定，以满足低噪声应用规范。L7983支持动态LCM至LNM的过渡。
软启动时间为内部固定，且输出电压监控器管理任何数字负载（微控制器、FPGA等）的复位阶段。
内部补偿网络具有较高的抗噪声能力，设计简单且节省组件成本。
RST开路集电极输出还可在开机阶段实现输出电压排序。
同步整流设计用于中重负载时的高效率，高开关频率功能使应用程序的大小变得紧凑。
两个功率元件上的脉冲电流感应实现了有效的恒流保护。
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所有功能
- 3.5 V至60 V 工作输入电压
- 固定输出电压（3.3 V和5 V）或可在0.85 V~VIN之间调节
- 300 mA DC输出电流
- 动态低功耗模式至低噪声模式选择
- 10 µA工作静态电流（L7983PU33R，VIN > 24 V，LCM）
- 2.3 µA关断电流
- 可编程开关频率为200 kHz至2.2 MHz。
- 可选扩频（抖动）
- 内部软启动
- 启用/可调UVLO阈值
- 与外部时钟同步
- 内部补偿网络
- 内部电流限制
- 过电压保护
- 输出电压排序
- 过热保护
eDesignSuite
eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.
Power Management Design Center
Thermal-electrical Simulators for Components
Signal Conditioning Design Tool
NFC/RFID Calculators
Choose design tool: 
Power Management Design Center
Power Supply Design Tool
• SMPS design, by topology, by type and by product
• PFC design with analog and digitial control
• Supports various PCB configurations
Choose type: DC/DC AC/DC 太阳能电池充电器
Power Management Design Center
LED Lighting Design Tool
• Handles AC-DC and DC-DC design in common topologies
• Displays interactive and annotated schematic
• Provides current/voltage graphs, Bode plots, efficiency curves and power-loss data
Choose type: DC/DC AC/DC
Power Management Design Center
Digital Power Workbench
• Provides a step-by-step optimized design of power section and control loop
• Generates the STM32Cube embedded software package for custom applications and allows firmware project generation, compatible with multiple STM32 IDEs
Power Management Design Center
Power Tree Designer
• Specify input/output power for each node in the tree
• Check for consistency
• Design each individual node
Choose design tool: 
Thermal-electrical Simulators for Components
AC Switches Simulator
• Select ratings and application waveforms
• Get junction temperature and blocking voltage graphs
• Search and sort suitable devices
Thermal-electrical Simulators for Components
Rectifier Diodes Simulator
• Select ratings and application waveforms
• Estimate power losses
• Search and sort suitable devices
Thermal-electrical Simulators for Components
STPOWER Studio
• Supports long mission profiles
• Provides power loss and temperature graphs
• Helps define heatsink thermal properties
Thermal-electrical Simulators for Components
Twister Sim
• Help select the right ViPOWER Automotive power device
• Supports load-compatibility, wiring harness optimization, fault condition impact and diagnostic analysis
• Supports various PCB configurations
Thermal-electrical Simulators for Components
TVS Simulator
• Specify system ratings and surge waveform
• Search and sort suitable devices
Thermal-electrical Simulators for Components
Estimate
• Build simple schematics and firmware inputs in minutes
• Quickly generate reliable estimates of battery life, system power consumption and bill of materials costs
Choose design tool: 
Signal Conditioning Design Tool
Active Filters
• Handles multi-stage-designs and common topologies
• Returns circuit component values
• Provides gain, phase and group delay graphs
• Low Pass, High Pass and Band Pass
Signal Conditioning Design Tool
Comparators
• Handles most common configurations
• Returns circuit components values
• Provides I/O signal waveforms
• Inverting, Non Inverting, Window
Signal Conditioning Design Tool
Low side Current Sensing
• Returns circuit component values
• Provides current error graphs
Signal Conditioning Design Tool
High side Current Sensing
• Provides current error graphs.
• Help to select the right High side current sensing and shunt devices.
Choose design tool: 
NFC/RFID Calculators
NFC Inductance
• Input geometry and substrate properties
• Get antenna impedance
NFC/RFID Calculators
UHF Link Budget
• Enter forward and reverse link characteristics
• The tool returns link budget estimate
NFC/RFID Calculators
NFC Tuning Circuit
• Enter antenna parameter and matching target
• Select the topology of the matching network
• The tool returns component values for the desired design targets
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EDA符号、封装和3D模型
意法半导体 - L7983
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
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符号
封装
3D模型
所有资源
| 资源标题 | 版本 | 更新时间 |
|---|
SIMPLIS models (1)
| 资源标题 | 版本 | 更新时间 | ||
|---|---|---|---|---|
| ZIP | 2023.07 | 25 Jan 2024 | 25 Jan 2024 |
质量与可靠性
| 产品型号 | Marketing Status | 包 | 等级规格 | 符合RoHS级别 | 材料声明** |
|---|---|---|---|---|---|
| L7983PU33R | 批量生产 | DFN 3X3X0.8 10L PITCH 0.5 | 工业 | Ecopack2 | |
| L7983PU50R | 批量生产 | DFN 3X3X0.8 10L PITCH 0.5 | 工业 | Ecopack2 | |
| L7983PUR | 批量生产 | DFN 3X3X0.8 10L PITCH 0.5 | 工业 | Ecopack2 |
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持。
样片和购买
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| 产品型号 | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | 包 | 包装类型 | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L7983PUR | | | distributors 无法联系到经销商，请联系我们的销售办事处 | ||||||||||
| L7983PU50R | | | distributors 无法联系到经销商，请联系我们的销售办事处 | ||||||||||
| L7983PU33R | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
L7983PUR 批量生产
Budgetary Price (US$)*/Qty:
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L7983PU50R 批量生产
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包:
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L7983PU33R 批量生产
Budgetary Price (US$)*/Qty:
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distributors
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包:
包装类型:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
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