MAX20474
3.0V to 5.5V Input, 6V to 18V Output, Synchronous Boost Converter
Industry's Only Automotive AEC-Q100 Grade 1 Qualified Fully Synchronous 18V Boost Converter
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Overview
Features and Benefits
- Synchronous Boost Converter for Small Solution Size
- 4.0A Peak Input Current
- Resistor-Adjustable Output Voltage from 6V to 18V
- 6V to 18V Fixed Output Selection in 0.25V Steps
- 3.0V to 5.5V Operating Supply Voltage
- 2.2MHz Operation
- Active-Low RESET Output
- Spread Spectrum
- High Precision
- ±1.5% Output Voltage Accuracy, Fixed
- ±2.2% Output Voltage Accuracy, Adj
- 81 ± 3% UV Monitoring
- 121 ± 3% OV Monitoring
- Good Load-Transient Performance
- Robust for the Automotive Environment
- Current-Mode, Forced-PWM, and SKIP Operation
- Overtemperature and Short-Circuit Protection
- 3mm x 3.5mm, 14-Pin TDFN
- -40°C to +125°C Automotive Temperature Range
Product Details
The MAX20474 is a high-efficiency DC-DC converter that boosts 3.0V to 5.5V input supply from 6V to 18V at up to 1A load. The boost converter achieves ±1.5% output error over load, line, and temperature range.
The device features a 2.2MHz fixed-frequency PWM mode for better noise immunity and load-transient response, as well as a pulse-frequency modulation mode (skip) for increased efficiency during light-load operation. The 2.2MHz frequency operation allows for the use of all ceramic capacitors and minimizes external components. The programmable spread-spectrum frequency modulation minimizes radiated electromagnetic emissions. Integrated low RDSON switches improve efficiency at heavy loads and make planning the layout a much simpler task with respect to discrete solutions.
Other features include True Shutdown™, soft-start, overcurrent, and overtemperature protections.
Applications
- Automotive Point of Load
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Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.