LP2951CD

LP2951CD is a voltage regulator type PMIC produced by Texas Instruments, specifically designed to provide an adjustable supply voltage depending on the needs of the system. It has been used in a variety of systems such as medical systems, automotive, industrial, and computer applications. The device is a Low Drop-Out (LDO) regulator suitable for providing power that require a large output current up to 1.2A.

The LP2951CD is an on-chip series current regulator that acts as a shunt regulator operating in a current mode. Any output voltage as close as possible to the reference voltage is maintained. This is due to the feedback mechanism where the output voltage is continually compared to the voltage at the Reference pin and the current into the Load pin is regulated accordingly.

It has a wide range of adjustable output voltages from 2.5V to 15V, with ±1% accuracy and low dropout voltage of 160 mV at an output current of 1.2A. The LP2951CD can operate from an input voltage range of 4.5V to 30V and supports an output current up to 1.2A. It has an enable pin that can be turned on and off by applying a digital signal. With this, the Start-up period can be reduced significantly. The device has a Power Good Output pin that shows the status of the output voltage – either high (good) or low (bad).

The LP2951CD features a 0.8V reference voltage and a temperature range of -40°C to +125°C. It has a very low quiescent current of 0.3-0.5 mA and a low shutdown current of 0.01 mA. The device has low output noise and is built with an ESD protection circuit.

The LP2951CD is available in the standard 8.3 mm x 2.4 mm MSOP-8 package with the PD-suffix available for the commercial grade and the TD-suffix is for the automotive grade.

Overall, the LP2951CD is an excellent choice for various low noise, low power system and wide temperature range applications. It can maintain accurate output voltage with low quiescent current and shut down current with its on-chip series current regulating. The device is easily controlled with its enable pin and features a power good output pin too. With a wide variety of features, the LP2951CD is a robust, versatile and highly efficient voltage regulator.