SmartSwitch™ AAT3237 300mA MicroPower™ LDO with PowerOK is a low noise, small size, ultra low current output switching regulator with ultra low dropout and fast transient response, suitable for portable applications.
The document details the AAT3237 MicroPower low dropout (LDO) linear regulator, designed for portable applications requiring low noise and extended battery life. Key features include a typical quiescent current of 70µA, fast transient response, high power supply rejection ratio (PSRR), and output short-circuit protection.
The device is available in Pb-free SOT23-6 or SC70JW-8 packages with 13 factory-programmed output voltages ranging from 1.2V to 3.5V. It includes a Power-OK open-drain output to signal regulation status and operates over an ambient temperature range of -40°C to +85°C.
| Output Current | 300 mA |
|---|---|
| Dropout Voltage (Max) | 600 mV |
| Operating Junction Temperature Range | -40 to 150 °C |
| Package Types | SOT23-6 or SC70JW-8 |
The device is available in 13 factory-programmed voltages ranging from 1.2V to 3.5V.
Yes, it features a low-power shutdown mode and an open-drain POK output that signals when Vout is in regulation.
The absolute maximum rating for the input voltage (Vin) and POK pin is 6V.