LM51581QRTERQ1
Active1.5-A, 85-V, 2.2-MHZ WIDE VIN BOOST, FLYBACK, & SEPIC CONVERTER WITH DUAL RANDOM SPREAD SPECTRUM
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LM51581QRTERQ1
Active1.5-A, 85-V, 2.2-MHZ WIDE VIN BOOST, FLYBACK, & SEPIC CONVERTER WITH DUAL RANDOM SPREAD SPECTRUM
Technical Specifications
Parameters and characteristics for this part
| Specification | LM51581QRTERQ1 |
|---|---|
| Current - Output | 1.63 A |
| Frequency - Switching [Max] | 2.2 MHz |
| Frequency - Switching [Min] | 100 kHz |
| Function | Step-Up, Step-Up/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 Type | Adjustable |
| Package / Case | 16-WFQFN Exposed Pad |
| Qualification | AEC-Q100 |
| Supplier Device Package | 16-WQFN (3x3) |
| Synchronous Rectifier | False |
| Topology | Flyback, SEPIC, Boost |
| Voltage - Input (Max) [Max] | 60 V |
| Voltage - Input (Min) [Min] | 1.5 V |
| Voltage - Output (Max) | 83 V |
| Voltage - Output (Min/Fixed) | 1.5 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 | $ 4.58 | |
| 10 | $ 4.11 | |||
| 25 | $ 3.89 | |||
| 100 | $ 3.37 | |||
| 250 | $ 3.20 | |||
| 500 | $ 2.87 | |||
| 1000 | $ 2.42 | |||
| Digi-Reel® | 1 | $ 4.58 | ||
| 10 | $ 4.11 | |||
| 25 | $ 3.89 | |||
| 100 | $ 3.37 | |||
| 250 | $ 3.20 | |||
| 500 | $ 2.87 | |||
| 1000 | $ 2.42 | |||
| Tape & Reel (TR) | 3000 | $ 2.30 | ||
| Texas Instruments | LARGE T&R | 1 | $ 3.46 | |
| 100 | $ 3.03 | |||
| 250 | $ 2.12 | |||
| 1000 | $ 1.71 | |||
Description
General part information
LM51581-Q1 Series
The LM5158x -Q1 device is a wide input range, non-synchronous boost converter with an integrated 85-V, 3.26-A (LM5158 -Q1) or 85-V, 1.63-A (LM51581 -Q1) power switch.
The device can be used in boost, SEPIC, and flyback topologies. It can start up from a single-cell battery with a minimum of 3.2 V. It can operate with the input supply voltage as low as 1.5 V if the BIAS pin is greater than 3.2 V.
The BIAS pin operates up to 60 V (65-V absolute maximum) for automotive load dump. The switching frequency is dynamically programmable from 100 kHz to 2.2 MHz with an external resistor. Switching at 2.2 MHz minimizes AM band interference and allows for a small solution size and fast transient response. The device provides a selectable Dual Random Spread Spectrum to help reduce the EMI over a wide frequency range.
Documents
Technical documentation and resources
