MAX1706EEE+

The MAX1706EEE+ is a 1-cell to 3-cell, high current, low noise, step-up DC-DC converter with linear regulator in 16 pin QSOP package. It use a synchronous rectifier pulse width modulation (PWM) boost topology to generate 2.5V to 5.5V outputs from battery inputs, such as 1 to 3 NiCd/NiMH cells or 1 Li-Ion cell. It has a built-in low-dropout linear regulator that delivers up to 200mA. With an internal synchronous rectifier, MAX1706 deliver 5% better efficiency than similar nonsynchronous converters. It also features a pulse frequency-modulation (PFM) standby mode to improve efficiency at light loads and a 1µA shutdown mode. An efficiency-enhancing track mode reduces the step-up DC-DC converter output to 300mV above the linear regulator output. It is used in digital cordless phones, personal communicators, palmtop computers, wireless handsets, PCS phones and two-way pagers.

• Minimum operating battery voltage is 0.7V (typ), 1.1VIN start-up voltage
• Operating temperature range from -40°C to 85°C
• FB regulation voltage is 1.233V at CLK/SEL = OUT
• Up to 96% efficiency
• Step-up output (2.5V to 5.5V adjustable)
• Linear regulator (1.25V to 5V adjustable)
• PWM/PFM synchronous rectified topology
• 300KHz PWM mode or synchronized
• 1µA shutdown mode
• Voltage monitor, pushbutton on/off control

Applications

Power Management, Portable Devices, Consumer Electronics

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