LM25141QRGERQ1
ActiveAUTOMOTIVE 2.2-MHZ, LOW-IQ SYNCHRONOUS BUCK CONTROLLER WITH FREQUENCY SPREAD SPECTRUM
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LM25141QRGERQ1
ActiveAUTOMOTIVE 2.2-MHZ, LOW-IQ SYNCHRONOUS BUCK CONTROLLER WITH FREQUENCY SPREAD SPECTRUM
Technical Specifications
Parameters and characteristics for this part
| Specification | LM25141QRGERQ1 |
|---|---|
| Clock Sync | True |
| Control Features | Current Limit, Frequency Control, Enable |
| Duty Cycle (Max) [Max] | 50 % |
| Frequency - Switching | 2.2 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 | 24-VFQFN Exposed Pad |
| Qualification | AEC-Q101 |
| Supplier Device Package | 24-VQFN (4x4) |
| Synchronous Rectifier | True |
| Topology | Half-Bridge |
| Voltage - Supply (Vcc/Vdd) [Max] | 42 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 3.8 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 4.00 | |
| 10 | $ 3.60 | |||
| 25 | $ 3.40 | |||
| 100 | $ 2.95 | |||
| 250 | $ 2.80 | |||
| 500 | $ 2.51 | |||
| 1000 | $ 2.12 | |||
| Digi-Reel® | 1 | $ 4.00 | ||
| 10 | $ 3.60 | |||
| 25 | $ 3.40 | |||
| 100 | $ 2.95 | |||
| 250 | $ 2.80 | |||
| 500 | $ 2.51 | |||
| 1000 | $ 2.12 | |||
| Tape & Reel (TR) | 3000 | $ 1.87 | ||
| LCSC | Piece | 1 | $ 1.03 | |
| 10 | $ 0.93 | |||
| 30 | $ 0.87 | |||
| 100 | $ 0.83 | |||
| 500 | $ 0.80 | |||
| 1000 | $ 0.79 | |||
| Texas Instruments | LARGE T&R | 1 | $ 3.19 | |
| 100 | $ 2.63 | |||
| 250 | $ 1.89 | |||
| 1000 | $ 1.42 | |||
Description
General part information
LM25141-Q1 Series
The LM25141-Q1 is a synchronous buck controller, intended for high-voltage, wide-VIN, step-down regulator applications. The control method is peak current-mode control. Current-mode control provides inherent line feed-forward, cycle-by-cycle current limiting, and ease of loop compensation. The LM25141-Q1 features slew rate control to simplify the compliance with CISPR and automotive EMI requirements.
The LM25141-Q1 has two selectable switching frequencies: 2.2 MHz and 440 kHz. Gate drivers with slew rate control can be adjusted to reduce EMI.
In light or no-load conditions, the LM25141-Q1 operates in skip cycle mode for improved low power efficiency. The LM25141-Q1 has a high-voltage bias regulator with automatic switch-over to an external bias to reduce the IQcurrent from VIN. Additional features include frequency synchronization, cycle-by-cycle current limit, hiccup-mode fault protection for sustained overload, and power-good output.
Documents
Technical documentation and resources
