The MAX1703ESE+ is a 1-cell to 3-cell, high power (1.5A), low noise, step-up DC-DC converter in 16 pin NSOIC package. It uses a synchronous-rectified pulse width modulation (PWM) boost topology to generate a 2.5V to 5.5V output from battery inputs such as one to three NiCd/NiMH cells or one Li-Ion cell. The device includes a 2A, 75Mohm, N-channel MOSFET switch and a 140Mohm, P-channel synchronous rectifier. With its internal synchronous rectifier IC delivers up to 5% better efficiency than similar non synchronous converters. It also features a pulse frequency modulation (PFM) low-power mode to improve efficiency at light loads and a 1µA shutdown mode. It has an uncommitted comparator that generates a power-good or low-battery-warning output and linear gain block that can be used to build a linear regulator. The high efficiency, low noise, converter used in battery-powered wireless applications & digital cordless phones, two-way pagers, personal communicators & palmtop computers
● Input voltage range from 0.7V to 5.5V
● Operating temperature range from 40°C to +85°C
● Up to 95% efficiency
● Up to 1.5A output
● Fixed 5V or adjustable step-up output (2.5V to 5.5V)
● Low-power mode (300µW)
● Low noise, constant frequency mode (300KHz)
● Synchronized switching frequency (200KHz to 400KHz)
● Power good comparator
● Uncommitted gain block
