LM70840QRRXRQ1
ActiveAUTOMOTIVE, HIGH-DENSITY, 4.5V TO 80V INPUT, 4A LOW-EMI SYNCHRONOUS DC/DC STEP-DOWN CONVERTER
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LM70840QRRXRQ1
ActiveAUTOMOTIVE, HIGH-DENSITY, 4.5V TO 80V INPUT, 4A LOW-EMI SYNCHRONOUS DC/DC STEP-DOWN CONVERTER
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | LM70840QRRXRQ1 |
|---|---|
| Current - Output | 4 A |
| Frequency - Switching [Max] | 2.2 MHz |
| Frequency - Switching [Min] | 200 kHz |
| Function | Step-Down |
| Grade | Automotive |
| Mounting Type | Wettable Flank, Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 150 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Type | Adjustable (Fixed) |
| Package / Case | 29-PowerVFQFN |
| Qualification | AEC-Q100 |
| Supplier Device Package | 29-VQFN (6x6) |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 80 V |
| Voltage - Input (Min) [Min] | 4.5 V |
| Voltage - Output (Max) [Max] | 55 V |
| Voltage - Output (Min/Fixed) | 0.8 V |
| Voltage - Output (Min/Fixed) | 12 V |
| Voltage - Output (Min/Fixed) | 3.3 V |
| Voltage - Output (Min/Fixed) | 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 | Cut Tape (CT) | 1 | $ 8.15 | |
| 10 | $ 5.59 | |||
| 25 | $ 4.93 | |||
| 100 | $ 4.19 | |||
| 250 | $ 3.83 | |||
| 500 | $ 3.61 | |||
| 1000 | $ 3.43 | |||
| Digi-Reel® | 1 | $ 8.15 | ||
| 10 | $ 5.59 | |||
| 25 | $ 4.93 | |||
| 100 | $ 4.19 | |||
| 250 | $ 3.83 | |||
| 500 | $ 3.61 | |||
| 1000 | $ 3.43 | |||
| Tape & Reel (TR) | 3000 | $ 3.29 | ||
| Texas Instruments | LARGE T&R | 1 | $ 4.84 | |
| 100 | $ 3.95 | |||
| 250 | $ 3.10 | |||
| 1000 | $ 2.63 | |||
Description
General part information
LM70840-Q1 Series
The LM708x0-Q1 is a family of low-IQ, wide-VIN synchronous buck converters designed for an input voltage range of 4.5V to 80V and delivering up to 8A of output current at fixed output voltages of 3.3V, 5V, 12V, or an adjustable output.
The LM708x0-Q1 uses a peak current-mode control architecture for easy loop compensation, fast transient response, and excellent load and line regulation. A pair of LM708x0-Q1 converters can be set up in an interleaved mode (paralleled outputs) with accurate current sharing for applications requiring up to 16A of output current.
The LM708x0-Q1 features a unique Dual Random Spread Spectrum (DRSS) function that combines low-frequency triangular and high-frequency cycle-by-cycle random modulations for improved EMI performance across a wide range of frequency bands.
Documents
Technical documentation and resources