LM25085 Series
4.5-42V Wide Vin, Constant On-Time Non-Synchronous PFET Buck Controller with 0.9V Reference
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
4.5-42V Wide Vin, Constant On-Time Non-Synchronous PFET Buck Controller with 0.9V Reference
| Part | Function | Mounting Type | Supplier Device Package | Duty Cycle (Max) [Max] | Topology | Output Type | Clock Sync | Output Phases | Operating Temperature [Max] | Operating Temperature [Min] | Frequency - Switching [Max] | Package / Case | Voltage - Supply (Vcc/Vdd) [Max] | Voltage - Supply (Vcc/Vdd) [Min] | Synchronous Rectifier | Number of Outputs | Control Features | Output Configuration | Package / Case | Package / Case | Grade | Qualification | Utilized IC / Part | Main Purpose | Voltage - Output | Contents | Current - Output | Frequency - Switching | Outputs and Type | Outputs and Type | Board Type | Supplied Contents | Voltage - Input [Max] | Voltage - Input [Min] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments LM25085MYE/NOPB | Step-Down | Surface Mount | 8-HVSSOP | 100 % | Buck | Transistor Driver | 1 | 125 ¯C | -40 °C | 1 MHz | 8-MSOP, 8-PowerTSSOP | 42 V | 4.5 V | 1 | Current Limit, Frequency Control | Positive | ||||||||||||||||||
Texas Instruments LM25085AMMX/NOPB | Step-Down | Surface Mount | 100 % | Buck | Transistor Driver | 1 | 125 ¯C | -40 °C | 1 MHz | 8-MSOP, 8-TSSOP | 42 V | 4.5 V | 1 | Current Limit, Frequency Control | Positive | 0.118 in | 3 mm | |||||||||||||||||
Texas Instruments LM25085QMYE/NOPB | Step-Down | Surface Mount | 8-HVSSOP | 100 % | Buck | Transistor Driver | 1 | 125 ¯C | -40 °C | 1 MHz | 8-MSOP, 8-PowerTSSOP | 42 V | 4.5 V | 1 | Current Limit, Frequency Control | Positive | Automotive | AEC-Q100 | ||||||||||||||||
Texas Instruments LM25085AMM/NOPB | Step-Down | Surface Mount | 100 % | Buck | Transistor Driver | 1 | 125 ¯C | -40 °C | 1 MHz | 8-MSOP, 8-TSSOP | 42 V | 4.5 V | 1 | Current Limit, Frequency Control | Positive | 0.118 in | 3 mm | |||||||||||||||||
Texas Instruments LM25085MM/NOPB | Step-Down | Surface Mount | 100 % | Buck | Transistor Driver | 1 | 125 ¯C | -40 °C | 1 MHz | 8-MSOP, 8-TSSOP | 42 V | 4.5 V | 1 | Current Limit, Frequency Control | Positive | 0.118 in | 3 mm | |||||||||||||||||
Texas Instruments LM25085SDX/NOPB | Step-Down | Surface Mount | 8-WSON (3x3) | 100 % | Buck | Transistor Driver | 1 | 125 ¯C | -40 °C | 1 MHz | 8-WFDFN Exposed Pad | 42 V | 4.5 V | 1 | Current Limit, Frequency Control | Positive | ||||||||||||||||||
Texas Instruments LM25085QMY/NOPB | Step-Down | Surface Mount | 8-HVSSOP | 100 % | Buck | Transistor Driver | 1 | 125 ¯C | -40 °C | 1 MHz | 8-MSOP, 8-PowerTSSOP | 42 V | 4.5 V | 1 | Current Limit, Frequency Control | Positive | Automotive | AEC-Q100 | ||||||||||||||||
Texas Instruments LM25085AMME/NOPB | Step-Down | Surface Mount | 100 % | Buck | Transistor Driver | 1 | 125 ¯C | -40 °C | 1 MHz | 8-MSOP, 8-TSSOP | 42 V | 4.5 V | 1 | Current Limit, Frequency Control | Positive | 0.118 in | 3 mm | |||||||||||||||||
Texas Instruments LM25085MME/NOPB | Step-Down | Surface Mount | 100 % | Buck | Transistor Driver | 1 | 125 ¯C | -40 °C | 1 MHz | 8-MSOP, 8-TSSOP | 42 V | 4.5 V | 1 | Current Limit, Frequency Control | Positive | 0.118 in | 3 mm | |||||||||||||||||
Texas Instruments LM25085MMX/NOPB | Step-Down | Surface Mount | 100 % | Buck | Transistor Driver | 1 | 125 ¯C | -40 °C | 1 MHz | 8-MSOP, 8-TSSOP | 42 V | 4.5 V | 1 | Current Limit, Frequency Control | Positive | 0.118 in | 3 mm | |||||||||||||||||
Texas Instruments LM25085ASDX/NOPB | Step-Down | Surface Mount | 8-WSON (3x3) | 100 % | Buck | Transistor Driver | 1 | 125 ¯C | -40 °C | 1 MHz | 8-WFDFN Exposed Pad | 42 V | 4.5 V | 1 | Current Limit, Frequency Control | Positive | ||||||||||||||||||
Texas Instruments LM25085AMYE/NOPB | Step-Down | Surface Mount | 8-HVSSOP | 100 % | Buck | Transistor Driver | 1 | 125 ¯C | -40 °C | 1 MHz | 8-MSOP, 8-PowerTSSOP | 42 V | 4.5 V | 1 | Current Limit, Frequency Control | Positive | ||||||||||||||||||
Texas Instruments LM25085SDE/NOPB | Step-Down | Surface Mount | 8-WSON (3x3) | 100 % | Buck | Transistor Driver | 1 | 125 ¯C | -40 °C | 1 MHz | 8-WFDFN Exposed Pad | 42 V | 4.5 V | 1 | Current Limit, Frequency Control | Positive | ||||||||||||||||||
Texas Instruments LM25085AMY/NOPB | Step-Down | Surface Mount | 8-HVSSOP | 100 % | Buck | Transistor Driver | 1 | 125 ¯C | -40 °C | 1 MHz | 8-MSOP, 8-PowerTSSOP | 42 V | 4.5 V | 1 | Current Limit, Frequency Control | Positive | ||||||||||||||||||
Texas Instruments LM25085QMYX/NOPB | Step-Down | Surface Mount | 8-HVSSOP | 100 % | Buck | Transistor Driver | 1 | 125 ¯C | -40 °C | 1 MHz | 8-MSOP, 8-PowerTSSOP | 42 V | 4.5 V | 1 | Current Limit, Frequency Control | Positive | Automotive | AEC-Q100 | ||||||||||||||||
Texas Instruments LM25085ASDE/NOPB | Step-Down | Surface Mount | 8-WSON (3x3) | 100 % | Buck | Transistor Driver | 1 | 125 ¯C | -40 °C | 1 MHz | 8-WFDFN Exposed Pad | 42 V | 4.5 V | 1 | Current Limit, Frequency Control | Positive | ||||||||||||||||||
Texas Instruments LM25085AMYEEVAL/NOPB | LM25085A | DC/DC, Step Down | 1 V | Board(s) | 5 A | 200 kHz | 1 Non-Isolated Output | |||||||||||||||||||||||||||
Texas Instruments LM25085ASD/NOPB | Step-Down | Surface Mount | 8-WSON (3x3) | 100 % | Buck | Transistor Driver | 1 | 125 ¯C | -40 °C | 1 MHz | 8-WFDFN Exposed Pad | 42 V | 4.5 V | 1 | Current Limit, Frequency Control | Positive | ||||||||||||||||||
Texas Instruments LM25085MY/NOPB | Step-Down | Surface Mount | 8-HVSSOP | 100 % | Buck | Transistor Driver | 1 | 125 ¯C | -40 °C | 1 MHz | 8-MSOP, 8-PowerTSSOP | 42 V | 4.5 V | 1 | Current Limit, Frequency Control | Positive | ||||||||||||||||||
Texas Instruments LM25085SD/NOPB | Step-Down | Surface Mount | 8-WSON (3x3) | 100 % | Buck | Transistor Driver | 1 | 125 ¯C | -40 °C | 1 MHz | 8-WFDFN Exposed Pad | 42 V | 4.5 V | 1 | Current Limit, Frequency Control | Positive | ||||||||||||||||||
Texas Instruments LM25085MYEVAL/NOPB | LM25085 | DC/DC, Step Down | 5 V | 5 A | 300 kHz | Non-Isolated | 1 | Fully Populated | Board(s) | 42 V | 5.5 V |
Key Features
• Wide 4.5V to 42V Input Voltage RangeAdjustable Current Limit using RDS(ON)or a Current Sense ResistorProgrammable Switching Frequency to 1MHzNo Loop Compensation RequiredUltra-Fast Transient ResponseNearly Constant Operating Frequency with Line and Load VariationsAdjustable Output Voltage from 0.9VPrecision ±2% Feedback ReferenceCapable of 100% Duty Cycle OperationInternal Soft-Start TimerIntegrated High Voltage Bias RegulatorThermal ShutdownAll trademarks are the property of their respective owners.Wide 4.5V to 42V Input Voltage RangeAdjustable Current Limit using RDS(ON)or a Current Sense ResistorProgrammable Switching Frequency to 1MHzNo Loop Compensation RequiredUltra-Fast Transient ResponseNearly Constant Operating Frequency with Line and Load VariationsAdjustable Output Voltage from 0.9VPrecision ±2% Feedback ReferenceCapable of 100% Duty Cycle OperationInternal Soft-Start TimerIntegrated High Voltage Bias RegulatorThermal ShutdownAll trademarks are the property of their respective owners.
Description
AI
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.
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.