illustrate

The TPS6012x boost-regulated charge pump generates an output voltage of 3.6 V from 1.8 V to 3.3 V or 3 ±to V to 4% of the output voltage (either alkaline, NiCm, NiMH or two cells). They can provide output currents above 200 mA (100 mA for TPS60122 and TPS60123) from 2-V inputs all. Four external capacitors are required to establish a complete high efficiency DC/DC charge pump converter. To achieve high efficiency over a wide input voltage range, the charge pump automatically selects a conversion mode between 1.5x or multiplex. From the 2-V input, all chips can start with full load current.

These devices feature power-saving pulse-skipping modes at light loads, extending battery life. TPS60120, TPS60122 and TPS60124 include low battery comparisons.

characteristic

• Higher average efficiency exceeds the input voltage range because of the special switching topology
• At least 200 mA output with an input voltage range of 1.8 V current to 3.6 - V
• Regulated 3.3 - V or 3 - V output voltage of ± 4%
• No inductance, low EMI
• There are only four required external components
• Quiescent current of 55 uA
• 0.05 - uA shutdown current
• The shutdown load is disconnected
• Integrated low battery and power good detector
• Evaluation module available (TPS60120EVM-142)
• apply
  • Two battery-powered applications
  • Portable instrument
  • Battery-powered microprocessor system
  • Small devices
  • Backup battery boost converter
  • PDA, organizer, laptop
  • MP-3 portable audio player
  • Handheld instruments
  • Medical devices (e.g. blood glucose meters)