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
