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LM25085 - 产品图解：
LM25085-42V 宽输入电压恒定导通时间 PFET 降压开关控制器
LM25085-控制器（外部开关）-DC/DC开关稳压器-电源管理
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TI产品 - LM25085介绍

LM25085 - 42V 宽输入电压恒定导通时间 PFET 降压开关控制器

LM25085是TI德州仪器公司的一款控制器（外部开关）产品，LM25085是42V 宽输入电压恒定导通时间 PFET 降压开关控制器，本站介绍了LM25085的封装应用图解、特点和优点、功能等，并给出了与LM25085相关的TI元器件型号供参考。

LM25085 - 42V 宽输入电压恒定导通时间 PFET 降压开关控制器 - 控制器（外部开关） - DC/DC开关稳压器 - 德州仪器

产品特性
  • LM25085-Q1 is an Automotive Grade product that is AEC-Q100 Grade 1 Qualified (-40°C to 125°C Operating Junction Temperature)
  • 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 1.25V
  • Precision ±2% Feedback Reference
  • Capable of 100% Duty Cycle Operation
  • Internal Soft-Start Timer
  • Integrated High Voltage Bias Regulator
  • Thermal Shutdown
产品应用
  • Automotive Infotainment
  • Battery/Super Capacitor Chargers
  • LED Drivers
产品说明

The LM25085 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.

产品器件信息
PART NUMBERPACKAGEBODY SIZE (NOM)
LM25085-Q1HVSSOP (8)3.00 mm x 3.00 mm
LM25085VSSOP (8)3.00 mm x 3.00 mm
WSON (8) 3.00 mm x 3.00 mm
HVSSOP (8)3.00 mm x 3.00 mm
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