LM25085ASDX/NOPB
Active4.5-42V WIDE VIN, CONSTANT ON-TIME NON-SYNCHRONOUS PFET BUCK CONTROLLER WITH 0.9V REFERENCE 8-WSON -40 TO 125
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LM25085ASDX/NOPB
Active4.5-42V WIDE VIN, CONSTANT ON-TIME NON-SYNCHRONOUS PFET BUCK CONTROLLER WITH 0.9V REFERENCE 8-WSON -40 TO 125
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Technical Specifications
Parameters and characteristics commom to parts in this series
| Specification | LM25085ASDX/NOPB | LM25085 Series |
|---|---|---|
| Board Type | - | Fully Populated |
| Clock Sync | False | False |
| Contents | - | Board(s) |
| Control Features | Current Limit, Frequency Control | Current Limit, Frequency Control |
| Current - Output | - | 5 A |
| Duty Cycle (Max) [Max] | 100 % | 100 % |
| Frequency - Switching | - | 200 - 300 kHz |
| Frequency - Switching [Max] | 1 MHz | 1 MHz |
| Function | Step-Down | Step-Down |
| Grade | - | Automotive |
| Main Purpose | - | DC/DC, Step Down |
| Mounting Type | Surface Mount | Surface Mount |
| Number of Outputs | 1 | 1 |
| Operating Temperature [Max] | 125 ¯C | 125 ¯C |
| Operating Temperature [Min] | -40 °C | -40 °C |
| Output Configuration | Positive | Positive |
| Output Phases | 1 | 1 |
| Output Type | Transistor Driver | Transistor Driver |
| Outputs and Type | - | 1 Non-Isolated Output, Non-Isolated |
| Outputs and Type | - | 1 |
| Package / Case | 8-WFDFN Exposed Pad | 8-PowerTSSOP, 8-MSOP, 8-TSSOP, 8-WFDFN Exposed Pad |
| Package / Case | - | 0.118 in |
| Package / Case | - | 3 mm |
| Qualification | - | AEC-Q100 |
| Supplied Contents | - | Board(s) |
| Supplier Device Package | 8-WSON (3x3) | 8-HVSSOP, 8-WSON (3x3) |
| Synchronous Rectifier | False | False |
| Topology | Buck | Buck |
| Utilized IC / Part | - | LM25085A, LM25085 |
| Voltage - Input | - | 42 V |
| Voltage - Input | - | 5.5 V |
| Voltage - Output | - | 1 - 5 V |
| Voltage - Supply (Vcc/Vdd) [Max] | 42 V | 42 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 4.5 V | 4.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| DigiKey | Tape & Reel (TR) | 4500 | $ 0.99 | |
| 9000 | $ 0.97 | |||
| Digikey | Tape & Reel (TR) | 4500 | $ 0.99 | |
| 9000 | $ 0.95 | |||
| Mouser Electronics | N/A | 4500 | $ 0.99 | |
| Texas Instruments | LARGE T&R | 1 | $ 1.63 | |
| 100 | $ 1.34 | |||
| 250 | $ 0.96 | |||
| 1000 | $ 0.73 | |||
LM25085 Series
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 |
Description
General part information
LM25085 Series
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).
Documents
Technical documentation and resources