MAX1857EUA47+

The MAX1857EUA47+ is a 500mA, low-dropout, ripple-rejecting LDO in 8 pin µMAX package. The MAX1857 low-dropout linear regulator delivers a 500mA load current with low 120mV dropout. The high-accuracy (±1%) output voltage is preset at an internally trimmed 4.75V or can be adjusted from 1.25V to 5.0V with an external resistive divider. An internal PMOS pass transistor allows the low 135μA supply current to remain independent of load, making this device ideal for portable battery-operated equipment such as personal digital assistants (PDAs), cellular phones, cordless phones, base stations and notebook computers. Other features include an active-low open-drain reset output with a 4.5ms timeout period that indicates when the output is out of regulation, a 0.1μA shutdown mode, short-circuit protection and thermal shutdown protection.

• Supply voltage range is 2.5V to 5.5V
• Operating temperature range from -40°C to 85°C
• Low 135μA ground current
• Output current limit

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