TPS61020 采用 QFN-10 封装的可调节、1.5A 开关、96% 高效升压转换器，具有降压模式

TPS61020描述
The TPS61020 devices provide a power supply solution for products powered by either a one-cell, two-cell, or three-cell alkaline, NiCd or NiMH, or one-cell Li-Ion or Li-polymer battery. Output currents can go as high as 200 mA while using a single-cell alkaline, and discharge it down to 0.9 V. TPS61020 can also be used for generating 5 V at 500 mA from a 3.3-V rail or a Li-Ion battery. The TPS61020 is based on a fixed frequency, pulse-width-modulation (PWM) controller using a synchronous rectifier to obtain maximum efficiency. At low load currents the TPS61020 enters the Power Save mode to maintain a high efficiency over a wide load current range. The Power Save mode can be disabled, forcing the converter to operate at a fixed switching frequency。

TPS61020技术特性
 –  【TPS61020】96% Efficient Synchronous Boost Converter 
 –  【TPS61020】Output Voltage Remains Regulated When Input Voltage Exceeds Nominal Output Voltage 
 –  【TPS61020】Device Quiescent Current: 25 µA (Typ) 
 –  【TPS61020】Input Voltage Range: 0.9 V to 6.5 V 
 –  【TPS61020】Fixed and Adjustable Output Voltage Options Up to 5.5 V 
 –  【TPS61020】Power Save Mode for Improved Efficiency at Low Output Power 
 –  【TPS61020】Low Battery Comparator 
 –  【TPS61020】Low EMI-Converter (Integrated Antiringing Switch) 
 –  【TPS61020】Load Disconnect During Shutdown 
 –  【TPS61020】Over-Temperature Protection 
 –  【TPS61020】Small 3 mm × 3 mm QFN-10 Package

TPS61020应用领域
 –  All One-Cell, Two-Cell and Three-Cell Alkaline, NiCd or NiMH or Single-Cell Li Battery Powered Products 
 –  Portable Audio Players 
 –  PDAs 
 –  Cellular Phones 
 –  Personal Medical Products 
 –  Camera White LED Flash Light