TPS61031

The TPS6103x devices provide a power supply solution for products powered by either a one-cell Li-Ion or Li-polymer, or a two to three-cell alkaline, NiCd or NiMH battery. The converter generates a stable output voltage that is either adjusted by an external resistor divider or fixed internally on the chip. TPS6103x provides high efficient power conversion and is capable of delivering output currents up to 1 A at 5 V  at a supply voltage down to 1.8 V. The implemented boost converter is based on a fixed frequency,pulse-width- modulation (PWM) controller using a  synchronous rectifier to obtain maximum efficiency.At low load currents the converter enters 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. TPS6103x can also operate synchronized  to an external clock signal that is applied to the SYNC pin. The maximum peak current in the boost switch is limited to a value of 4500 mA.

The converter TPS6103x can be disabled to minimize battery drain. During shutdown, the load is completely dis- connected from the battery. A low-EMI mode is  implemented to reduce ringing and, in effect, lower radiated electromagnetic energy when the converter enters the discontinuous conduction mode.

The TPS6103x is packaged in a 16-pin QFN package measuring 4 mm x 4 mm (RSA) or in a 16-pin  TSSOP PowerPAD™ package (PWP).