LM25085-Q1 Series
Automotive Grade 4.5-42V Wide Vin, Constant On-Time Non-Synchronous PFET Buck Controller
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
Automotive Grade 4.5-42V Wide Vin, Constant On-Time Non-Synchronous PFET Buck Controller
| Part | Clock Sync | Function | Topology | Control Features | Output Configuration | Qualification | Duty Cycle (Max) [Max] | Package / Case | Supplier Device Package | Output Type | Voltage - Supply (Vcc/Vdd) [Max] | Voltage - Supply (Vcc/Vdd) [Min] | Number of Outputs | Grade | Output Phases | Frequency - Switching [Max] | Operating Temperature [Max] | Operating Temperature [Min] | Synchronous Rectifier | Mounting Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments LM25085QMY/NOPB | Step-Down | Buck | Current Limit, Frequency Control | Positive | AEC-Q100 | 100 % | 8-MSOP, 8-PowerTSSOP | 8-HVSSOP | Transistor Driver | 42 V | 4.5 V | 1 | Automotive | 1 | 1 MHz | 125 ¯C | -40 °C | Surface Mount | ||
Texas Instruments LM25085QMYX/NOPB | Step-Down | Buck | Current Limit, Frequency Control | Positive | AEC-Q100 | 100 % | 8-MSOP, 8-PowerTSSOP | 8-HVSSOP | Transistor Driver | 42 V | 4.5 V | 1 | Automotive | 1 | 1 MHz | 125 ¯C | -40 °C | Surface Mount | ||
Texas Instruments LM25085QMYE/NOPB | Step-Down | Buck | Current Limit, Frequency Control | Positive | AEC-Q100 | 100 % | 8-MSOP, 8-PowerTSSOP | 8-HVSSOP | Transistor Driver | 42 V | 4.5 V | 1 | Automotive | 1 | 1 MHz | 125 ¯C | -40 °C | Surface Mount |
Key Features
• LM25085-Q1 is an Automotive Grade product that isAEC-Q100 Grade 1 Qualified (–40°C to 125°COperating Junction Temperature)Wide 4.5V to 42V Input Voltage RangeAdjustable Current Limit Using RDS(ON)or aCurrent Sense ResistorProgrammable Switching Frequency to 1MHzNo Loop Compensation RequiredUltra-Fast Transient ResponseNearly Constant Operating Frequency with Line andLoad VariationsAdjustable Output Voltage from 1.25VPrecision ±2% Feedback ReferenceCapable of 100% Duty Cycle OperationInternal Soft-Start TimerIntegrated High Voltage Bias RegulatorThermal ShutdownLM25085-Q1 is an Automotive Grade product that isAEC-Q100 Grade 1 Qualified (–40°C to 125°COperating Junction Temperature)Wide 4.5V to 42V Input Voltage RangeAdjustable Current Limit Using RDS(ON)or aCurrent Sense ResistorProgrammable Switching Frequency to 1MHzNo Loop Compensation RequiredUltra-Fast Transient ResponseNearly Constant Operating Frequency with Line andLoad VariationsAdjustable Output Voltage from 1.25VPrecision ±2% Feedback ReferenceCapable of 100% Duty Cycle OperationInternal Soft-Start TimerIntegrated High Voltage Bias RegulatorThermal Shutdown
Description
AI
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.
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.