TPS61026 数据表、产品信息和支持

the load is completely disconnected from the battery. A low-EMI mode isimplemented to reduce ringing and， forcing the converter to operate at a fixed switchingfrequency. The maximum peak current in the boost switch is limited to a value of 800 mA， pulse width modulation(PWM) controller using a synchronous rectifier to obtain maximum efficiency. At low load currentsthe converter enters the power save mode to maintain a high efficiency over a wide-load currentrange. The Power Save mode can be disabled， or three-cell alkaline，or 1800 mA depending on the version of the device. The TPS6102x devices keep the output voltage regulated even when the input voltageexceeds the nominal output voltage. The output voltage can be programmed by an external resistordivider， anddischarge it down to 0.9 V. The device can also be used for generating 5 V at 500 mA from a 3.3-Vrail or a Li-Ion battery. The boost converter is based on a fixed-frequency， or is fixed internally on the chip. The converter can be disabled to minimize batterydrain. During shutdown， The TPS6102x family of devices provide a power supply solution for products powered byeither a one-cell， or one-cell Li-Ion or Li-polymerbattery. Output currents can go as high as 200 mA while using a single-cell alkaline battery， NiCd or NiMH， lower radiated electromagnetic energy when theconverter enters the discontinuous conduction mode. The device is packaged in a 10-pin VSONPowerPAD package measuring 3 mm x 3 mm(DRC). ， two-cell。

1500 mA， in effect，。