The MAX1677EEE+ is a compact, high-efficiency, dual-output step-up and LCD bias DC to DC converter in 16 pin QSOP package. It is a compact, high-efficiency, dual-output boost converter for portable devices needing two regulated supplies typically for logic and liquid crystal displays. Operation with inputs as low as 0.7V allows the MAX1677 to accept 1, 2 or 3-cell alkaline, NiCd or NiMH batteries as well as 1-cell lithium-ion batteries. The device requires no external FETs and can maintain regulation while consuming only 20µA, making it ideal for hand-held pen-input and PDA devices operating with low-current "sleep" states. The MAX1677"s primary regulator supplies up to 350mA at either a factory-preset 3.3V or an adjustable 2.5V to 5.5V output. On-chip synchronous rectification provides efficiencies up to 95%. 300KHz (or externally clocked) PWM operation is particularly suitable for applications needing low noise, such as those with wireless features.
Supply voltage range is 0.7V to 5.5V
Operating temperature range from -40°C to 85°C
Up to +28V or -28V for LCD bias programmable current limit
