MAX20014
2.2MHz Sync Boost and Dual Step-Down Converters
Small PMIC for All Automotive Applications
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Overview
Features and Benefits
- Multiple Functions for Small Size
- Synchronous 750mA Boost Converter
- Fixed from 3.8V to 8.5V in 100mV Steps
- Dual Synchronous Buck Converters Up to 3A
- Factory-Configurable Output Voltages from 0.8V to 3.8V in 25mV Steps
- Resistor Adjustable
- 3.0V to 5.5V Operating Supply Voltage
- 2.2MHz Operation
- Undervoltage Threshold of 93% ±3%
- Overvoltage Threshold of 107% ±3%
- Individual Active-Low RESET_ Outputs
- High-Precision
- ±1.5% Output-Voltage Accuracy
- Good Load Transient Performance for Buck Converters
- Robust for the Automotive Environment
- Current Mode, Forced-PWM, and Skip Operation
- Overtemperature and Short-Circuit Protection
- 4mm × 4mm 24-Pin TQFN
- -40°C to +125°C Automotive Temperature Range
Product Details
The MAX20014 is a high-efficiency three-output low-voltage DC-DC converter. OUT1 boosts the input supply up to 8.5V at up to 750mA, while two synchronous step-down converters operate from a 3.0V to 5.5V input voltage range and provides a 0.8V to 3.8V output voltage range at up to 3A. The boost converter achieves ±2% and the buck converters achieve ±1.5% output error over load, line, and temperature range.
The device features a 2.2MHz fixed-frequency pulse-width modulation (PWM) mode for better noise immunity and load transient response, and 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 footprint. The programmable spread-spectrum frequency modulation minimizes radiated electromagnetic emissions. Integrated low RDS(ON) switches improve efficiency at heavy loads and make the layout a much simpler task with respect to discrete solutions.
The device is offered with factory-preset output voltages or resistor-adjustable output voltages. Other features include soft-start, overcurrent, and overtemperature protections.
Design Solution: How to Shrink Your ADAS ECUs: Wrap the Power Management Around the Signal Chain ›
Applications
- All Automotive
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At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
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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.