TPS60125

TPS60120, TPS60121, TPS60122, TPS60123, TPS60124, TPS60125 REGULATED 200-mA HIGH EFFICIENCY CHARGE PUMP DC/DC CONVERTERS SLVS257B – NOVEMBER 1999 – REVISED AUGUST 2000 features D High Average Efficiency Over Input Voltage Range Because of Special Switching Topology D Minimum 200-mA Output Current From an Input Voltage Range of 1.8-V to 3.6-V D Regulated 3.3-V or 3-V ±4% Output Voltage D No Inductors Required, Low EMI D Only Four External Components Required D 55-µA Quiescent Supply Current D 0.05-µA Shutdown Current D Load Disconnected in Shutdown D Integrated Low Battery and Power Good Detectors D Evaluation Module Available (TPS60120EVM-142) · description The TPS6012x step-up, regulated charge pumps generate a 3.3-V or 3-V ±4% output voltage from a 1.8-V to 3.6-V input voltage (two alkaline, NiCd, or NiMH batteries). They can deliver an output current of at least 200 mA (100 mA for the TPS60122 and TPS60123), all from a 2-V input. Four external capacitors are needed to build a complete high efficiency dc/dc charge pump converter. To achieve the high efficiency over a wide input voltage range, the charge pump automatically selects between a 1.5x or doubler conversion mode. From a 2-V input, all ICs can start with full load current. The devices feature the power-saving pulse-skip mode to extend battery life at light loads. TPS60120, TPS60122, and TPS60124 include a low battery comparator. TPS60121, TPS60123, and TPS60125 feature a power-good output. The logic shutdown functi...