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LM2651

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1.5A 高效开关稳压器

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LM2651

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产品详情

Iout (max) (A) 1.5 Vin (min) (V) 4 Vin (max) (V) 14 Topology Buck Type Converter Switching frequency (min) (kHz) 255 Switching frequency (max) (kHz) 345 Features UVLO adjustable Control mode Voltage mode Vout (min) (V) 3.3 Vout (max) (V) 13 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0016
Iout (max) (A) 1.5 Vin (min) (V) 4 Vin (max) (V) 14 Topology Buck Type Converter Switching frequency (min) (kHz) 255 Switching frequency (max) (kHz) 345 Features UVLO adjustable Control mode Voltage mode Vout (min) (V) 3.3 Vout (max) (V) 13 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0016
TSSOP (PW) 16 32 mm² 5 x 6.4
  • Ultrahigh Efficiency up to 97%
  • High-Efficiency Over a 1.5-A to 1.5-mA Load
    Range
  • 4-V to 14-V Input Voltage Range
  • 1.8-V, 2.5-V, 3.3-V, or ADJ Output Voltage
  • Internal MOSFET Switch With Low RDS(on) of
    75 mΩ
  • 300-kHz Fixed Frequency Internal Oscillator
  • 7-µA Shutdown Current
  • Patented Current Sensing for Current Mode
    Control
  • Input Undervoltage Lockout
  • Adjustable Soft-Start
  • Current Limit and Thermal Shutdown
  • 16-Pin TSSOP Package

All trademarks are the property of their respective owners.
  • Ultrahigh Efficiency up to 97%
  • High-Efficiency Over a 1.5-A to 1.5-mA Load
    Range
  • 4-V to 14-V Input Voltage Range
  • 1.8-V, 2.5-V, 3.3-V, or ADJ Output Voltage
  • Internal MOSFET Switch With Low RDS(on) of
    75 mΩ
  • 300-kHz Fixed Frequency Internal Oscillator
  • 7-µA Shutdown Current
  • Patented Current Sensing for Current Mode
    Control
  • Input Undervoltage Lockout
  • Adjustable Soft-Start
  • Current Limit and Thermal Shutdown
  • 16-Pin TSSOP Package

All trademarks are the property of their respective owners.

The LM2651 switching regulator provides high-efficiency power conversion over a 100:1 load range (1.5 A to 15 mA). This feature makes the LM2651 an ideal fit in battery-powered applications that demand long battery life in both run and standby modes.

Synchronous rectification is used to achieve up to 97% efficiency. At light loads, the LM2651 enters a low power hysteretic or sleep mode to maintain high efficiency. In many applications, the efficiency still exceeds 80% at 15-mA load. A shutdown pin is available to disable the LM2651 and reduce the supply current to less than 10 µA.

The LM2651 contains a patented current sensing circuitry for current mode control. This feature eliminates the external current sensing resistor required by other current-mode DC-DC converters.

The LM2651 has a 300-kHz fixed frequency internal oscillator. The high oscillator frequency allows the use of extremely small, low-profile components.

A programmable soft-start feature limits current surges from the input power supply at start-up and provides a simple means of sequencing multiple power supplies.

Other protection features include input undervoltage lockout, current limiting, and thermal shutdown.

The LM2651 switching regulator provides high-efficiency power conversion over a 100:1 load range (1.5 A to 15 mA). This feature makes the LM2651 an ideal fit in battery-powered applications that demand long battery life in both run and standby modes.

Synchronous rectification is used to achieve up to 97% efficiency. At light loads, the LM2651 enters a low power hysteretic or sleep mode to maintain high efficiency. In many applications, the efficiency still exceeds 80% at 15-mA load. A shutdown pin is available to disable the LM2651 and reduce the supply current to less than 10 µA.

The LM2651 contains a patented current sensing circuitry for current mode control. This feature eliminates the external current sensing resistor required by other current-mode DC-DC converters.

The LM2651 has a 300-kHz fixed frequency internal oscillator. The high oscillator frequency allows the use of extremely small, low-profile components.

A programmable soft-start feature limits current surges from the input power supply at start-up and provides a simple means of sequencing multiple power supplies.

Other protection features include input undervoltage lockout, current limiting, and thermal shutdown.
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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 LM2651 1.5 A High-Efficiency Synchronous Switching Regulator 数据表 (Rev. E) PDF | HTML 2015年 11月 3日
用户指南 LM2651 降压转换器评估模块用户指南 (Rev. D) PDF | HTML 英语版 (Rev.D) PDF | HTML 2022年 7月 8日
选择指南 Buck Converter Quick Reference Guide (Rev. B) 2021年 4月 8日
用户指南 LM2651 EVAL 1.5A High Efficiency Synch Switching Reg Eval Board (Rev. A) 2013年 4月 24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）。

评估板

LM2651-3.3EVAL — 1.5A 高效开关稳压器

1.5A High Efficiency Switching Regulator

用户指南: PDF | HTML
英语版 (Rev.D): PDF | HTML
TI.com 上无现货
封装 引脚 下载
TSSOP (PW) 16 查看选项
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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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