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

LM3495

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2.9V 至 18V、仿真峰值电流模式降压控制器

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LM3495

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产品详情

Iout (max) (A) 10 Vin (min) (V) 2.9 Vin (max) (V) 18 Topology Buck Type Controller Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1500 Features Enable, Frequency synchronization, Tracking Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 5.5 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0018
Iout (max) (A) 10 Vin (min) (V) 2.9 Vin (max) (V) 18 Topology Buck Type Controller Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1500 Features Enable, Frequency synchronization, Tracking Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 5.5 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0018
TSSOP (PW) 16 32 mm² 5 x 6.4
  • Input Voltage from 2.9V to 18V
  • Output Voltage Adjustable from 0.6V to 5.5V
  • Feedback Accuracy: ±1%
  • Low-Side Sensing, Programmable Current Limit without Sense Resistor
  • Input Under Voltage Lockout
  • Hiccup Mode Current Limit Protection Eliminates Thermal Runaway During Fault Conditions
  • Internal Soft Start with Tracking Capability
  • 200 kHz to 1.5 MHz Switching Frequency, Synchronizable
  • On-Chip Gate Drivers
  • Soft Output Discharge During Shutdown
  • Startup into Output Pre-Bias
  • Operation from a Single Input Rail
  • Adaptive Duty Cycle Limit
  • TSSOP-16 Package

All trademarks are the property of their respective owners.

  • Input Voltage from 2.9V to 18V
  • Output Voltage Adjustable from 0.6V to 5.5V
  • Feedback Accuracy: ±1%
  • Low-Side Sensing, Programmable Current Limit without Sense Resistor
  • Input Under Voltage Lockout
  • Hiccup Mode Current Limit Protection Eliminates Thermal Runaway During Fault Conditions
  • Internal Soft Start with Tracking Capability
  • 200 kHz to 1.5 MHz Switching Frequency, Synchronizable
  • On-Chip Gate Drivers
  • Soft Output Discharge During Shutdown
  • Startup into Output Pre-Bias
  • Operation from a Single Input Rail
  • Adaptive Duty Cycle Limit
  • TSSOP-16 Package

All trademarks are the property of their respective owners.

The LM3495 is a PWM buck regulator which implements a unique emulated peak current mode control. This control method eliminates the switching noise which typically limits current mode operation at extremely short duty cycles and high operating frequency. The switching frequency is programmable between 200 kHz and 1.5 MHz, and can also be synchronized to an external clock. The LM3495 is also very fault tolerant with both switch node short, hiccup mode, and adaptive duty cycle limit protection. A 0.6V 1% reference and glitch free pre-biased start-up ensure the most demanding digital loads operate reliably. Internal soft start and the ability to track the output of another supply make the LM3495 versatile and efficient.

The LM3495 is a PWM buck regulator which implements a unique emulated peak current mode control. This control method eliminates the switching noise which typically limits current mode operation at extremely short duty cycles and high operating frequency. The switching frequency is programmable between 200 kHz and 1.5 MHz, and can also be synchronized to an external clock. The LM3495 is also very fault tolerant with both switch node short, hiccup mode, and adaptive duty cycle limit protection. A 0.6V 1% reference and glitch free pre-biased start-up ensure the most demanding digital loads operate reliably. Internal soft start and the ability to track the output of another supply make the LM3495 versatile and efficient.
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类型 标题 下载最新的英语版本 日期
* 数据表 LM3495 Emulated Peak Current Mode Buck Controller for Low Output Voltage 数据表 (Rev. F) 2013年 4月 4日
用户指南 LM3495 降压控制器评估模块用户指南 (Rev. C) PDF | HTML 英语版 (Rev.C) 2022年 7月 8日
技术文章 When and how to supply an external bias for buck controllers – part 2 PDF | HTML 2017年 12月 22日
模拟设计期刊 Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics 2016年 7月 21日
应用手册 Emulatd Cur Mode Cntrl for Buck Regs Using Sample and Hold Technique 2007年 3月 21日

设计和开发

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评估板

LM3495EVAL — 用于低输出电压的仿真峰值电流模式降压控制器

The Evaluation Board has been designed for testing of various circuits using the LM3495 buck regulator controller. A complete schematic for all the components is shown in Figure 3. The board is four layers, consisting of signal/power traces on top and bottom, one internal ground plane, and an (...)

用户指南: PDF | HTML
英语版 (Rev.C): PDF | HTML
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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

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