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AC/DC & DC/DC converters (integrated FET)

LM25007

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9V 至 42V 宽输入电压、0.5A、恒准时非同步降压稳压器

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LMR54410 正在供货 具有 80µA IQ 的 4.5V 至 36V、1A 同步降压 SIMPLE SWITCHER® 电源转换器 Smaller footprint, lower quiescent current, FPWM and PFM options.

LM25007

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产品详情

Iout (max) (A) 0.5 Vin (min) (V) 9 Vin (max) (V) 42 Topology Buck Type Converter Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 800 Features Light Load Efficiency, Over Current Protection Control mode Constant on-time (COT) Vout (min) (V) 2.5 Vout (max) (V) 37 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0005
Iout (max) (A) 0.5 Vin (min) (V) 9 Vin (max) (V) 42 Topology Buck Type Converter Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 800 Features Light Load Efficiency, Over Current Protection Control mode Constant on-time (COT) Vout (min) (V) 2.5 Vout (max) (V) 37 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0005
VSSOP (DGK) 8 14.7 mm² 3 x 4.9 WSON (NGT) 8 16 mm² 4 x 4
  • Integrated 0.74Ω N-Channel MOSFET Switch
  • Guaranteed 0.5A Output Current
  • Ultra-Fast Transient Response
  • Up to 800kHz Operation
  • No Control Loop Compensation Required
  • Vin Feed Forward Provides Constant Operating Frequency
  • 2% Accurate 2.5V Feedback from -40°C to 125°C
  • Highly Efficient Operation
  • Intelligent Current Limit Protection
  • External Shutdown Control
  • Thermal Shutdown
  • VSSOP and Thermally Enhanced WSON Packages
  • Integrated 0.74Ω N-Channel MOSFET Switch
  • Guaranteed 0.5A Output Current
  • Ultra-Fast Transient Response
  • Up to 800kHz Operation
  • No Control Loop Compensation Required
  • Vin Feed Forward Provides Constant Operating Frequency
  • 2% Accurate 2.5V Feedback from -40°C to 125°C
  • Highly Efficient Operation
  • Intelligent Current Limit Protection
  • External Shutdown Control
  • Thermal Shutdown
  • VSSOP and Thermally Enhanced WSON Packages

The LM25007 is a monolithic step-down switching regulator featuring all of the functions needed to implement a low cost, efficient, power supply. Capable of driving a 0.5A load over a 9V-42V input voltage range, this device is easy to apply and is provided in the small VSSOP-8 and the thermally enhanced WSON-8 packages. Ultra-fast transient response is achieved through the use of a constant on-time architecture with Vin feed forward. This feature provides an almost constant operating frequency over load and input voltage variations. The operating frequency can be adjusted with a single resistor. This architecture is easy to use and tolerant of component selection. An intelligent current limit is implemented in the LM25007 with forced off time that is inversely proportional to Vout thus ensuring recovery from fault conditions. The output voltage may be set from 2.5V to >30V. To improve efficiency in light load applications, the Vcc pin can be connected to an external voltage source to eliminate the drop through the internal regulator. Additional features include: thermal shutdown, Vcc under-voltage lockout, gate drive under-voltage lockout, and max duty cycle limiter.

The LM25007 is a monolithic step-down switching regulator featuring all of the functions needed to implement a low cost, efficient, power supply. Capable of driving a 0.5A load over a 9V-42V input voltage range, this device is easy to apply and is provided in the small VSSOP-8 and the thermally enhanced WSON-8 packages. Ultra-fast transient response is achieved through the use of a constant on-time architecture with Vin feed forward. This feature provides an almost constant operating frequency over load and input voltage variations. The operating frequency can be adjusted with a single resistor. This architecture is easy to use and tolerant of component selection. An intelligent current limit is implemented in the LM25007 with forced off time that is inversely proportional to Vout thus ensuring recovery from fault conditions. The output voltage may be set from 2.5V to >30V. To improve efficiency in light load applications, the Vcc pin can be connected to an external voltage source to eliminate the drop through the internal regulator. Additional features include: thermal shutdown, Vcc under-voltage lockout, gate drive under-voltage lockout, and max duty cycle limiter.
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技术文档

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类型 标题 下载最新的英语版本 日期
* 数据表 LM25007 42V, 0.5A Step-Down Switching Regulator 数据表 (Rev. C) 2013年 2月 20日
选择指南 电源管理指南 2018 (Rev. K) 2018年 7月 31日
选择指南 电源管理指南 2018 (Rev. R) 2018年 6月 25日
应用手册 Analysis & Design of Hysteretic Constant Freq Buck Regr Using the LM5007 (Rev. B) 2013年 4月 30日
EVM 用户指南 AN-1453 LM25007 Evaluation Board (Rev. A) 2013年 4月 24日
应用手册 Boot Capacitor Regulation in LM25007 Constant-On-Time (COT) Converter (Rev. A) 2013年 4月 23日

设计和开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

仿真模型

LM25007 PSpice Transient Model

SNVM245.ZIP (58 KB) - PSpice Model
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仿真模型

LM25007 Unencrypted PSpice Transient Model

SNVMAL3.ZIP (3 KB) - PSpice Model
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计算工具

LM25007QUICK-CALC — LM25007 快速入门计算器

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封装 引脚 下载
VSSOP (DGK) 8 查看选项
WSON (NGT) 8 查看选项
应遵守 TI 评估类商品的标准条款与条件。

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

支持和培训

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