LM25085QMYX/NOPB
ActiveAUTOMOTIVE GRADE 4.5-42V WIDE VIN, CONSTANT ON-TIME NON-SYNCHRONOUS PFET BUCK CONTROLLER
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LM25085QMYX/NOPB
ActiveAUTOMOTIVE GRADE 4.5-42V WIDE VIN, CONSTANT ON-TIME NON-SYNCHRONOUS PFET BUCK CONTROLLER
Technical Specifications
Parameters and characteristics for this part
| Specification | LM25085QMYX/NOPB |
|---|---|
| Clock Sync | False |
| Control Features | Frequency Control, Current Limit |
| Duty Cycle (Max) [Max] | 100 % |
| Frequency - Switching [Max] | 1 MHz |
| Function | Step-Down |
| Grade | Automotive |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | 8-PowerTSSOP, 8-MSOP |
| Package / Case [custom] | 3 mm |
| Package / Case [custom] | 0.118 in |
| Qualification | AEC-Q100 |
| Supplier Device Package | 8-HVSSOP |
| Synchronous Rectifier | False |
| Topology | Buck |
| Voltage - Supply (Vcc/Vdd) [Max] | 42 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 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 | $ | |
|---|---|---|---|---|
| Arrow | N/A | 1 | $ 1.95 | |
| 10 | $ 1.44 | |||
| 50 | $ 1.32 | |||
| 100 | $ 1.17 | |||
| 500 | $ 1.04 | |||
| Digikey | Cut Tape (CT) | 1 | $ 2.38 | |
| 10 | $ 2.14 | |||
| 25 | $ 2.02 | |||
| 100 | $ 1.72 | |||
| 250 | $ 1.62 | |||
| 500 | $ 1.41 | |||
| 1000 | $ 1.17 | |||
| Digi-Reel® | 1 | $ 2.38 | ||
| 10 | $ 2.14 | |||
| 25 | $ 2.02 | |||
| 100 | $ 1.72 | |||
| 250 | $ 1.62 | |||
| 500 | $ 1.41 | |||
| 1000 | $ 1.17 | |||
| Tape & Reel (TR) | 3500 | $ 1.09 | ||
| 7000 | $ 1.05 | |||
| Texas Instruments | LARGE T&R | 1 | $ 1.79 | |
| 100 | $ 1.48 | |||
| 250 | $ 1.06 | |||
| 1000 | $ 0.80 | |||
Description
General part information
LM25085-Q1 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).
