LINEAR REGULATOR

The MAX1589A low-dropout linear regulator operates from a +1.62V to +3.6V supply and delivers a guaranteed 500mA continuous load current with a low 175mV dropout. The high-accuracy (±0.5%) output voltage is preset to internally trimmed voltages from +0.75V to +3.0V. An active-low, open-drain reset output remains asserted for at least 70ms after the output voltage reaches regulation. This device is offered in 6-pin thin SOT23 and 6-pin, 3mm x 3mm thin DFN packages. An internal pMOS pass transistor maintains low supply current, independent of load and dropout voltage, making the MAX1589A ideal for portable battery-powered equipment such as personal digital assistants (PDAs), digital still cameras, cell phones, cordless phones, and notebook computers. Other features include logic-controlled shutdown, short-circuit protection, and thermal-overload protection.

• Low 1.62V Minimum Input Voltage
• Guaranteed 500mA Output Current
• ±0.5% Initial Accuracy
• Low 175mV Dropout at 500mA Load
• 70ms Active-Low RESET Output Flag
• Supply Current Independent of Load and Dropout Voltage
• Logic-Controlled Shutdown
• Thermal-Overload and Short-Circuit Protection
• Preset Output Voltages (0.75V, 1.0V, 1.3V, 1.5V, 1.8V, 2.5V, and 3.0V)
• Tiny 6-Pin Thin SOT23 Package (< 1.1mm High)
• Thin 6-Pin TDFN Package (< 0.8mm High)