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Overview
The LX7180A is a 4A step-down regulator with integrated MOSFETs, packaged in a space-saving 2 mm x 2 mm QFN12, for today's mobile devices. It uses an ultra-fast, constant frequency hysteretic control method to minimize external filter components while maintaining excellent regulation. The LX7180A operates from 3V to 5.5V rails, outputs 0.6V to 100% of the input voltage and can deliver an output current of up to 4A. Using the I2C interface, VOUT can be adjusted between 0.6V and 1.195V. In case a higher output voltage is needed, it must be programmed through an external resistive divider; the regulated voltage (VOUT) should be lower than the input voltage (VIN).
- Input Voltage Range (VIN): 3V - 5.5V (transients of up to 6.5V, for short durations)
- Output Voltage: 0.6V
- Output Current: typically, 4A @ 0.6V Output, 5V Input
- Power Save Mode (PSM) can be selected to improve light load efficiency
- PWM Switching Frequency: 1.65 MHz
- Hysteretic Control offers best transient response
- 100% Duty Ratio Operation
- Input Under Voltage and Over Voltage Protection
- Enable and Power Good Function
- I2C Serial Interface at 3.4 Mbps
- Internal Soft Start
- Cycle-by-Cycle Over Current Protection
- Hiccup Mode protects against short circuit faults
- Seven Bit Adjustable Reference Voltage via I2C Bus
- Overtemperature Protection (if the die temperature exceeds 150°C, with 25°C hysteresis)
- RoHS Compliant
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Documentation
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| EV17U26A_BOM | Board Design Files | Download | ||
| EV17U26A_SCH | Board Design Files | Download | ||
| EV17U26A_GERBERS | Board Design Files | Download | ||
| China-RoHS-Declaration_EV17U26A | Certifications | Download | ||
| EU-DoC_EV17U26A | Certifications | Download | ||
| EU-REACH-Statement_EV17U26A | Certifications | Download | ||
| UK-DoC_EV17U26A | Certifications | Download | ||
| I2C Monitor GUI | Software | Download | ||
| LX7180A Evaluation Board User's Guide | User Guide | Download |