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LM2653

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1.5A 高效同步开关稳压器

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LM2653

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产品详情

Rating Catalog Topology Buck Iout (max) (A) 1.5 Vin (max) (V) 14 Vin (min) (V) 4 Vout (max) (V) 5 Vout (min) (V) 1.5 Features Power good Control mode Voltage mode Switching frequency (min) (kHz) 255 Switching frequency (max) (kHz) 345 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 1700 Duty cycle (max) (%) 95 Type Converter
Rating Catalog Topology Buck Iout (max) (A) 1.5 Vin (max) (V) 14 Vin (min) (V) 4 Vout (max) (V) 5 Vout (min) (V) 1.5 Features Power good Control mode Voltage mode Switching frequency (min) (kHz) 255 Switching frequency (max) (kHz) 345 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 1700 Duty cycle (max) (%) 95 Type Converter
TSSOP (PW) 16 32 mm² 5 x 6.4
  • Efficiency up to 97%
  • 4V to 14V Input Voltage Range
  • 1.5V to 5.0V Adjustable Output Voltage
  • 0.1Ω Switch On Resistance
  • 300 kHz Fixed Frequency Internal Oscillator
  • 7 μA Shutdown Current
  • Patented Current Sensing for Current Mode Control
  • Input Undervoltage Lockout
  • Output Overvoltage Shutdown Protection
  • Output Undervoltage Shutdown Protection
  • Adjustable Soft-Start
  • Adjustable PGOOD Delay
  • Current Limit and Thermal Shutdown

All trademarks are the property of their respective owners.

  • Efficiency up to 97%
  • 4V to 14V Input Voltage Range
  • 1.5V to 5.0V Adjustable Output Voltage
  • 0.1Ω Switch On Resistance
  • 300 kHz Fixed Frequency Internal Oscillator
  • 7 μA Shutdown Current
  • Patented Current Sensing for Current Mode Control
  • Input Undervoltage Lockout
  • Output Overvoltage Shutdown Protection
  • Output Undervoltage Shutdown Protection
  • Adjustable Soft-Start
  • Adjustable PGOOD Delay
  • Current Limit and Thermal Shutdown

All trademarks are the property of their respective owners.

The LM2653 switching regulator provides high efficient power conversion over a 100:1 load range (1.5A to 15 mA). This feature makes the LM2653 an ideal fit in battery-powered applications.

Synchronous rectification is used to achieve up to 97% efficiency. At light loads, the LM2653 enters a low power hysteretic or “sleep” mode to keep the efficiency high. In many applications, the efficiency still exceeds 80% at 15 mA load. A shutdown pin is available to disable the LM2653 and reduce the supply current to 7µA.

All the power, control, and drive functions are integrated within the ICs. The ICs contain patented current sensing circuity for current mode control. This feature eliminates the external current sensing resistor required by other current-mode DC-DC converters.

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

Protection features include thermal shutdown, input undervoltage lockout, adjustable soft-start, cycle by cycle current limit, output overvoltage and undervoltage protections.

The LM2653 switching regulator provides high efficient power conversion over a 100:1 load range (1.5A to 15 mA). This feature makes the LM2653 an ideal fit in battery-powered applications.

Synchronous rectification is used to achieve up to 97% efficiency. At light loads, the LM2653 enters a low power hysteretic or “sleep” mode to keep the efficiency high. In many applications, the efficiency still exceeds 80% at 15 mA load. A shutdown pin is available to disable the LM2653 and reduce the supply current to 7µA.

All the power, control, and drive functions are integrated within the ICs. The ICs contain patented current sensing circuity for current mode control. This feature eliminates the external current sensing resistor required by other current-mode DC-DC converters.

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

Protection features include thermal shutdown, input undervoltage lockout, adjustable soft-start, cycle by cycle current limit, output overvoltage and undervoltage protections.

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类型 标题 下载最新的英语版本 日期
* 数据表 LM2653 1.5A High Efficiency Synchronous Switching Regulator 数据表 (Rev. E) 2013年 4月 3日
用户指南 LM2653 Step-Down Converter Evaluation Module User's Guide (Rev. C) PDF | HTML 2021年 12月 20日

设计和开发

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封装 引脚 CAD 符号、封装和 3D 模型
TSSOP (PW) 16 Ultra Librarian
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  • 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
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  • 制造厂地点
  • 封装厂地点

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