DESCRIPTION The TPS6301x devices provide a power supply solution for products powered by either a two-cell or three-cell alkaline, NiCd or NiMH battery, or a one-cell Li-Ion or Li-polymer battery. Output currents can go as high as 1200 mA while using a single-cell Li-Ion or Li-Polymer Battery, and discharge it down to 2.5 V or lower. The buck-boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain maximum efficiency. At low load currents, the converter enters Power Save mode to maintain high efficiency over a wide load current range. The Power FEATURES • Up to 96% Efficiency • 1200-mA Output Current at 3.3 V in Step Down Mode (VIN = 3.6 V to 5.5 V) • Up to 800-mA Output Current at 3.3 V in Boost Mode (VIN > 2.4 V) • Automatic Transition between Step Down and Boost Mode • Device Quiescent Current less than 50µA • Input Voltage Range: 2 V to 5.5 V • Fixed and Adjustable Output Voltage Options from 1.2 V to 5.5 V • Power Save Mode for Improved Efficiency at Low Output Power • Forced Fixed Frequency Operation and Synchronization possible • Load Disconnect During Shutdown • Output Overvoltage Protection • Overtemperature Protection • Available in Small 20 pin 2.14 mm x 1.93 mm, WCSP Package APPLICATIONS • All 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 • White LEDs
The TPS63010YFFR is a highly-efficient single inductor Buck-boost Converter with 2A switches. The TPS6301x device provide a power supply solution for products powered by either a two-cell/three-cell alkaline, NiCd/NiMH battery or one-cell Li-ion/Li-polymer battery. Output current can go as high as 1200mA while using a single-cell Li-ion/Li-polymer battery and discharge it down to 2.5V or lower. The buck-boost converter is based on a fixed-frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain maximum efficiency. At low load current, the converter enters power save mode to maintain 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. The maximum average current in the switches is limited to a typical value of 2200mA. The output voltage is programmable using an external resistor divider or is fixed internally on the chip.