General Description

The APL5308/9 series are micropower, low dropout lin ear regulators, which operate from 2.7V to 6V input voltage and del i ver up to 300mA. Typical dropout voltage is only 400mV at 300mA l oadi ng. Desi gned for use in battery-powered system, the low 60mA qui escent current makes it an ideal choice. Design with an internal P-channel MOSFET pass transistor, the APL5308/9 maintain a low supply current, independent of the load current and dropout voltage. Other features include thermal-shutdown p rotection current limit protection to ensure specified output current and controlled short-circuit current . The APL5308/ 9 regulators come in a miniature SOT-23-3, SOT-23-5, and SOT-89 packages.

Features

• Low Quiescent Current : 60mA (No load)

• Low Dropout V oltage : 400mV (@300mA)

• Fixed Output V oltage : 1.5V ~ 4.5V by Step 0.1V Increment

• Stable with Aluminum, T antalum, or Ceramic Capacitors

• No Protection Diodes Needed

• Built-in Thermal Protection

• Built-in Current-Limit Protection

• Controlled Short Circuit Current : 50mA

• Fast Transient Response

• Short Setting Time

• SOT-23-3, SOT-23-5, and SOT-89 Packages