产品概述
描述
L6983是一种易于使用的同步单片降压调节器，能够向负载提供高达3 A的电流。宽的输入电压范围使该器件适用于广泛的应用领域。L6983基于峰值电流模式架构，采用QFN16 3x3封装，带内部补偿功能，从而使设计复杂性和尺寸降至最低。
L6983有低功耗模式（LCM）和低噪声模式（LNM）两个版本。LCM最大限度提高了轻负载时的效率，且输出电压纹波可控，因此该器件适用于电池供电的应用。LNM使开关频率保持恒定，并在轻负载工作时将输出电压纹波降至最低，满足低噪声敏感型应用的要求。L6983允许在200 KHz - 2.2 MHz范围内选择开关频率，并以可选扩展频谱改善EMC。
EN引脚提供启动/关闭功能。禁用之后，典型的关断电流是2 µA。一旦置高EN引脚，器件就被启动，会有1.3 ms内部软启动。L6983的“PGOOD”采用集电极开路输出，用于监测FB电压。两个功率元件上的逐波电流检测实现了有效的恒定电流保护和热关断，防止温升失控。
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所有功能
- 3.5 V至38 V 工作输入电压
- 输出电压从0.85 V到VIN
- 3.3 V和5 V固定输出电压版本
- 3 A DC输出电流
- 工作静态电流为17 μA
- 内部补偿网络
- 两种不同的版本：LCM确保低负载时的高效率，而LNM 适用于噪声敏感型应用。
- 2 μA关断电流
- 内部软启动
- 使能
- 过电压保护
- 输出电压序时序
- 过温保护
- 开关频率从200 kHz至2.3 MHz可调使用低ESR电容时仍可稳定工作
- 以可选扩展频谱改善EMC
- 电源正常信号
- LNM版本可与外部时钟同步
- QFN16封装
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 - L6983
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** |
|---|---|---|---|---|---|
| L6983C33QTR | 批量生产 | QFPN 3X3X0.80 16L PITCH 0.50 | 工业 | Ecopack3 | |
| L6983C50QTR | 批量生产 | QFPN 3X3X0.80 16L PITCH 0.50 | 工业 | Ecopack3 | |
| L6983CQTR | 批量生产 | QFPN 3X3X0.80 16L PITCH 0.50 | 工业 | Ecopack3 | |
| L6983N33QTR | 批量生产 | QFPN 3X3X0.80 16L PITCH 0.50 | 工业 | Ecopack3 | |
| L6983N50QTR | 批量生产 | QFPN 3X3X0.80 16L PITCH 0.50 | 工业 | Ecopack3 | |
| L6983NQTR | 批量生产 | QFPN 3X3X0.80 16L PITCH 0.50 | 工业 | Ecopack3 | |
L6983C33QTR
Package:
QFPN 3X3X0.80 16L PITCH 0.50Material Declaration**:
L6983CQTR
Package:
QFPN 3X3X0.80 16L PITCH 0.50Material Declaration**:
L6983N33QTR
Package:
QFPN 3X3X0.80 16L PITCH 0.50Material Declaration**:
L6983N50QTR
Package:
QFPN 3X3X0.80 16L PITCH 0.50Material Declaration**:
L6983NQTR
Package:
QFPN 3X3X0.80 16L PITCH 0.50Material Declaration**:
(**) 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) | Operating Temperature (°C) (max) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||||
| L6983C33QTR | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
| L6983CQTR | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
| L6983N33QTR | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
| L6983N50QTR | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
| L6983C50QTR | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
| L6983NQTR | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
L6983C33QTR 批量生产
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L6983N50QTR 批量生产
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L6983NQTR 批量生产
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