MAX1684EEE+

The MAX1684EEE+ is a low-noise, 14V input, 1A, PWM step-down converter in 16 pin QSOP package. It is a high-efficiency, internal switch, pulse-width modulation (PWM) step-down switching regulator intended to power cellular phones, communicating PDAs and handy-terminals. This device delivers a 1A output current from two lithium-ion (Li+) batteries. It has a wide-input voltage range of 2.7V to 14V gives design flexibility and allows batteries to charge from a wall cube, since the ICs operate at the higher voltages that occur when the battery is removed. The output voltage is preset to 3.3V or can be externally adjusted from 1.25V to VIN. There are four modes of operation such as fixed-frequency, normal, low-power and shutdown. The fixed-frequency PWM mode of operation offers excellent noise characteristics. The normal mode maintains high efficiency at all loads. The low-power mode is used to conserve power in standby or when full load is not required.

• Fixed frequency PWM operation 300KHz
• Operating temperature range from -40°C to 85°C
• High efficiency of up to 96%
• Normal mode quiescent current is 150μA
• Low power mode quiescent current is 25μA
• Shutdown current is 2μA
• Synchronized switching frequency

Applications

Power Management, 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