- 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 PFET 降压控制器
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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.
- 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
- Vin (Min) (V)
- 4.5
- Vin (Max) (V)
- 42
- Vout (Min) (V)
- 1.25
- 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, Enable, Frequency Synchronization
- Regulated outputs (#)
- 1
- Number of phases
- 1
- Rating
- Catalog
LM25085的完整型号有:LM25085MM/NOPB、LM25085MME/NOPB、LM25085MMX/NOPB、LM25085MY/NOPB、LM25085MYE/NOPB、LM25085MYX/NOPB、LM25085SD/NOPB、LM25085SDE/NOPB,以下是这些产品的关键参数及官网采购报价:
LM25085MM/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LM25085MM/NOPB的批量USD价格:.814(1000+)
LM25085MME/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LM25085MME/NOPB的批量USD价格:.814(1000+)
LM25085MMX/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LM25085MMX/NOPB的批量USD价格:.678(1000+)
LM25085MY/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LM25085MY/NOPB的批量USD价格:.814(1000+)
LM25085MYE/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LM25085MYE/NOPB的批量USD价格:.814(1000+)
LM25085MYX/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LM25085MYX/NOPB的批量USD价格:.678(1000+)
LM25085SD/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LM25085SD/NOPB的批量USD价格:.678(1000+)
LM25085SDE/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LM25085SDE/NOPB的批量USD价格:.678(1000+)
LM25085MYEVAL — 用于 LM25085 的评估板 - 42V 恒准时 PFET 降压开关控制器
The LM25085 evaluation board provides the design engineer with a fully functional buck regulator, employing the LM25085 PFET switching controller which uses the constant on-time (COT) operating principle. The evaluation board provides a 5V output over an input range of 5.5V to 42V. The circuit (...)
LM25085 PSpice Transient Model
PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用,包括业内超大的模型库之一,涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。借助?PSpice for TI 的设计和仿真环境及其内置的模型库,您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案,然后再进行布局和制造,可缩短产品上市时间并降低开发成本。
在?PSpice for TI 设计和仿真工具中,您可以搜索 TI (...)