TPS63011YFFR

高效率，单电感具有2 C开关降压 - 升压型转换器 HIGHLY EFFICIENT,SINGLE INDUCTOR BUCK-BOOST CONVERTER WITH 2-A SWITCHES

DESCRIPON

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