TPS799185DDCR

PMIC - Voltage Regulators - Linear

The TPS799185DDCR is a low-dropout (LDO) linear voltage regulator. It features adjustable voltage output range of 0.8V to 5.0V, and high current output up to 1.5A. The device has low quiescent current, low noise, and low power shutdown mode, making it suitable for applications with high power efficiency. This highly integrated LDO regulator is specifically designed for space-constrained applications such as ultra-mobile PCs, cell phones, and other portable devices.

Application Fields

The TPS799185DDCR is an ideal voltage regulator for portable electronic devices and battery-powered systems, because it features low stand-by current, low-noise operation, and fast transient response. It has wide input voltage range of Li-ion battery, 1.45V-5.5V and output voltage range of 0.8V-5V with ±2% accuracy. It requires only two external components, making layout of application boards simple and reducing the cost of the whole system. With high power efficiency of up to 92%, this LDO regulator is suitable for powering RF transceivers, LCD display drive circuits, memory core logic and internal logic.

Working Principle

The TPS799185DDCR is a linear voltage regulator with low-dropout (LDO) architecture. It supports load current up to 1.5A and is able to maintain stability over wide load current and temperature range. The device uses a voltage reference and error amplifier circuit to set and maintain a precise output voltage. The output voltage is programmed through a resistive voltage divider, and regulated against changes in the input voltage, load current, and temperature. The device has an enable pin that can be used to turn the device ON or OFF. It also has an Built-In auto-discharge circuit that reduces output voltage to 0.25V when the regulator is OFF.

The device has over temperature protection and over current protection features which protect both the device and application circuit. It also features a 0.2μA low quiescent current and operates without any external components. The device is available in small SOT23-5 and WSON-6 packages.

Conclusion

The TPS799185DDCR is an adjustable, low-dropout linear voltage regulator that is suitable for a variety of portable electronic applications. It has wide input voltage range, adjustable output voltage range from 0.8V to 5.0V, and 1.5A peak current support. The device has low quiescent current and low-noise operation. It is available in small SOT23-5 and WSON-6 packages to meet the requirements of space-constrained applications.