AP1159ADS09

AP1159ADS09 is a highly accurate low dropout linear voltage regulator (LDO), designed for powering high performance systems in portable or stationary applications. The device is optimized for ultra-low quiescent current, low noise, fast transient response, and high reliability. It provides excellent tracking of input and output with minimal capacitance around the the output and low output noise when load current changes.

The AP1159ADS09 employs an externally adjustable regulator, enabling precision control of the output voltage. This adjustable rail enables accurate and repeatable control of regulated voltages from 0.8 to 5.5V with a ±1% tolerance over a wide range of line and load input conditions. The device features internal OR process that allows a full 5.5V tolerance of output voltage even at the maximum current rating of 250mA. The OR process also provides excellent protection against over-voltage and short circuit conditions.

The AP1159ADS09\'s low quiescent current of 9µA makes it ideal for powering low power consumption devices in portable and stationary applications. Operated from a 2.8V to 5.5V supply voltage range, the output voltage can be set to 0.8V to 5.0V with +/-1% accuracy. The maximum input voltage is 18V and the maximum output current is 250mA. The AP1159ADS09 also features an enable pin that when asserted allows the output voltage to be brought to 0.9 times the input voltage.

The AP1159ADS09 design ensures excellent load and line regulation. The device is also able to provide excellent transient response, fast turn-on, and low output capacitance thereby reducing the output noise compared to other LDOs. Other features include thermal and short circuit protection, current limit of 200mA, and power good flag.

In conclusion, AP1159ADS09 is highly accurate, reliable and low power linear regulator, optimized for ultra-low quiescent current and fast transient response. Its extreme accuracy, wide adjustability and high robustness makes it suitable for various applications that require reliable power delivery, such as operating temperature ranges, system scaling, etc.