Charge Pump STPUP 3.3V 100mA 20-Pin HTSSOP EP Tube

The TPS60101 step-up, regulated charge pump generates a 3.3-V ±4% output voltage from a 1.8-V to 3.6-V input voltage (two alkaline, NiCd, or NiMH batteries). Output current is 100 mA from a 2-V input. Only four external capacitors are needed to build a complete low-noise dc/dc converter. The push-pull operating mode of two single-ended charge pumps assures the low output voltage ripple as current is continuously transferred to the output. From a 2-V input, the TPS60101 can start into full load with loads as low as 33 O. The TPS60101 features either constant frequency mode to minimize noise and output voltage ripple or the power-saving pulse-skip mode to extend battery life at light loads. The TPS60101 switching frequency is 300 kHz. The logic shutdown function reduces the supply current to 1-uA (max) and disconnects the load from the input. Special current-control circuitry prevents excessive current from being drawn from the battery during start-up. This DC/DC converter requires no inductors and has low EMI. It is available in the small 20-pin TSSOP PowerPADTM package (PWP).

Up to 100-mA Output Current

Less Than 5-mV_pp Output Voltage Ripple

No Inductors Required/Low EMI

Regulated 3.3-V ±4% Output

Only Four External Components Required

Up to 90% Efficiency

1.8-V to 3.6-V Input Voltage Range

50-µA Quiescent Supply Current

0.05-µA Shutdown Current

Load Isolated in Shutdown

Space-Saving Thermally-Enhanced TSSOP PowerPAD^TM Package

Evaluation Module Available (TPS60100EVM-131)

Battery-Powered Applications

Two Battery Cells to 3.3-V Conversion

Portable Instruments

Battery-Powered Microprocessor and DSP Systems

Miniature Equipment

Backup-Battery Boost Converters

PDAs

Laptops

Handheld Instrumentation

Medical Instruments

Cordless Phones