200 mA, PFM Step-Up Micropower Switching Regulator

The NCP1402 series are monolithic micropower step−up DC to DC converter that are specially designed for powering portable equipment from one or two cell battery packs.These devices are designed to start−up with a cell voltage of 0.8 V and operate down to less than 0.3 V. With only three external components, this series allow a simple means to implement highly efficient converters that are capable of up to 200 mA of output current at Vin = 2.0 V, VOUT = 3.0 V.

FEATUREs
• Extremely Low Start−Up Voltage of 0.8 V
• Operation Down to Less than 0.3 V
• High Efficiency 85% (Vin = 2.0 V, VOUT = 3.0 V, 70 mA)
• Low Operating Current of 30 μA (VOUT = 1.9 V)
• Output Voltage Accuracy ± 2.5%
• Low Converter Ripple with Typical 30 mV
• Only Three External Components Are Required
• Chip Enable Power Down Capability for Extended Battery Life
• Micro Miniature Thin SOT−23−5 Packages

Typical Applications
• Cellular Telephones
• Pagers
• Personal Digital Assistants (PDA)
• Electronic Games
• Portable Audio (MP3)
• Camcorders
• Digital Cameras
• Handheld Instruments