MAX1703ESE+

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

Applications

Power Management, Industrial, Portable Devices

Warnings

Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party