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LM25085A的基本参数
  • 制造厂商:TI
  • 产品类别:电源管理
  • 技术类目:直流/直流开关稳压器 - 降压稳压器
  • 功能描述:4.5V 至 42V 宽输入电压、恒定导通时间非同步、0.9V 基准电压 PFET 降压控制器
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LM25085A的产品详情:

The LM25085A is a functional variant of the LM25085 COT PFET Buck Switching Controller. The functional differences of the LM25085A are: The feedback reference voltage is 0.9V, the forced off-time after current limit detection is longer, and the soft-start time is shorter (1.8 ms).

The LM25085A is a high efficiency PFET switching regulator controller that can be used to quickly and easily develop a small, efficient buck regulator for a wide range of applications. This high voltage controller contains a PFET gate driver and a high voltage bias regulator which operates over a wide 4.5V to 42V input range. The constant on-time regulation principle requires no loop compensation, simplifies circuit implementation, and results in ultra-fast load transient response. The operating frequency remains nearly constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The PFET architecture allows 100% duty cycle operation for a low dropout voltage. Either the RDS(ON) of the PFET or an external sense resistor can be used to sense current for over-current detection.

LM25085A的优势和特性:
  • Wide 4.5V to 42V Input Voltage Range
  • Adjustable Current Limit using RDS(ON) or a Current Sense Resistor
  • Programmable Switching Frequency to 1MHz
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • Nearly Constant Operating Frequency with Line and Load Variations
  • Adjustable Output Voltage from 0.9V
  • Precision ±2% Feedback Reference
  • Capable of 100% Duty Cycle Operation
  • Internal Soft-Start Timer
  • Integrated High Voltage Bias Regulator
  • Thermal Shutdown

All trademarks are the property of their respective owners.

LM25085A的参数(英文):
  • Vin (Min) (V)
  • 4.5
  • Vin (Max) (V)
  • 42
  • Vout (Min) (V)
  • 0.9
  • Vout (Max) (V)
  • 42
  • Iout (Max) (A)
  • 10
  • Iq (Typ) (uA)
  • 1250
  • Switching frequency (Min) (kHz)
  • 50
  • Switching frequency (Max) (kHz)
  • 1000
  • Features
  • Adjustable Current Limit, Frequency Synchronization
  • Regulated outputs (#)
  • 1
  • Number of phases
  • 1
  • Rating
  • Catalog
LM25085A具体的完整产品型号参数及价格(美元):

LM25085A的完整型号有:LM25085AMM/NOPB、LM25085AMME/NOPB、LM25085AMMX/NOPB、LM25085AMY/NOPB、LM25085AMYE/NOPB、LM25085AMYX/NOPB、LM25085ASD/NOPB、LM25085ASDE/NOPB、LM25085ASDX/NOPB,以下是这些产品的关键参数及官网采购报价:

LM25085AMM/NOPB,工作温度:-40 to 125,封装:VSSOP (DGK)-8,包装数量MPQ:1000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM25085AMM/NOPB的批量USD价格:.871(1000+)

LM25085AMME/NOPB,工作温度:-40 to 125,封装:VSSOP (DGK)-8,包装数量MPQ:250个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM25085AMME/NOPB的批量USD价格:.871(1000+)

LM25085AMMX/NOPB,工作温度:-40 to 125,封装:VSSOP (DGK)-8,包装数量MPQ:3500个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM25085AMMX/NOPB的批量USD价格:.726(1000+)

LM25085AMY/NOPB,工作温度:-40 to 125,封装:HVSSOP (DGN)-8,包装数量MPQ:1000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM25085AMY/NOPB的批量USD价格:.871(1000+)

LM25085AMYE/NOPB,工作温度:-40 to 125,封装:HVSSOP (DGN)-8,包装数量MPQ:250个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM25085AMYE/NOPB的批量USD价格:.871(1000+)

LM25085AMYX/NOPB,工作温度:-40 to 125,封装:HVSSOP (DGN)-8,包装数量MPQ:3500个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM25085AMYX/NOPB的批量USD价格:.726(1000+)

LM25085ASD/NOPB,工作温度:-40 to 125,封装:WSON (NGQ)-8,包装数量MPQ:1000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM25085ASD/NOPB的批量USD价格:.871(1000+)

LM25085ASDE/NOPB,工作温度:-40 to 125,封装:WSON (NGQ)-8,包装数量MPQ:250个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM25085ASDE/NOPB的批量USD价格:.871(1000+)

LM25085ASDX/NOPB,工作温度:-40 to 125,封装:WSON (NGQ)-8,包装数量MPQ:4500个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM25085ASDX/NOPB的批量USD价格:.726(1000+)

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LM25085A的评估套件:

LM25085AMYEEVAL — 具有 0.9V 参考的 LM25085AMYEEVAL 42V 恒准时 PFET 降压开关控制器

The LM25085AMYE evaluation board provides the design engineer with a fully functional buck regulator, employing the LM25085A PFET switching controller which uses the constant on-time (COT) operating principle. This evaluation board provides a 1V output over an input range of 4.5V to 24V. The (...)

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