LM5085 - 75V 宽输入电压恒定导通时间 PFET 降压开关控制器

LM5085是TI德州仪器公司的一款控制器（外部开关）产品，LM5085是75V 宽输入电压恒定导通时间 PFET 降压开关控制器，本站介绍了LM5085的封装应用图解、特点和优点、功能等，并给出了与LM5085相关的TI元器件型号供参考。

LM5085 - 75V 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

LM5085-Q1 is an Automotive Grade Product that is AEC-Q100 Grade 1 Qualified (–40°C to 125°C Operating Junction Temperature)
Wide 4.5-V to 75-V 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 1.25 V
Precision ±2% Feedback Reference
Capable of 100% Duty Cycle Operation
Internal Soft-start Timer
Integrated High Voltage Bias Regulator
Thermal Shutdown
Package:
- HVSSOP-8
- VSSOP-8
- WSON-8

产品应用

Automotive Infotainment
Battery/Super Capacitor Chargers
LED Drivers

产品说明

The LM5085 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 4.5-V to 75-V input range. The constant on-time regulation principle requires no loop compensation, simplifies circuit implementation, and results in ultrafast 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 NUMBER	PACKAGE	BODY SIZE (NOM)
LM5085	VSSOP (8)	3.00 mm x 3.00 mm
	HVSSOP (8)
	WSON (8)
LM5085-Q1	HVSSOP (8)	3.00 mm x 3.00 mm

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