Analog Devices / Maxim Integrated MAX8815A 1A DC-DC Step-Up Converter
Analog Devices MAX8815A 1A DC-DC Step-Up Converter is a high-efficiency, low quiescent current (30µA), synchronous step-up converter with True Shutdown™ and inrush-current limiting. This converter generates any output voltage from 3.3V to 5V from a 2-cell NiMH/NiCd or a single-cell Li+/Li polymer battery. The MAX8815A has a preset 2.5A current limit, allowing a 500mA load at 1.8V input and 1A load at 2.5V input when the output is set to 5V. The Maxim Integrated MAX8815 is ideal for various applications, including DSC and DVC, microprocessor / DSP core power, smartphones, MP3 players, and more.
Features
- Efficient DC-DC converter eliminates heat
- 4MHz switching for tiny external components
- Instant on; works with no / low battery
- Dual current-limiting inputs; AC adapter or USB automatic adapter/USB/battery switchover to support load transients
- 50mΩ system-to-battery switch
- Supports USB spec
- Thermistor monitor
- Integrated current-sense resistor
- No external MOSFETs or diodes
- 4.1V to 16V input operating voltage range
Applications
- Smart phones
- Personal navigation devices
- MP3 players
- Mobile internet devices
- Ultra-mobile PCs
Simplified Op Circuit
Publicado: 2012-01-17
| Actualizado: 2023-04-13