LP2966IMM-2828

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Introduction

LP2966IMM-2828 is a 10-pin Low-Dropout (LDO) linear voltage regulator with a wide range of adjustable output voltage options from 1.2V to 28V. It has a maximum output current of 100 mA and a dropout voltage of 400 mV. The regulator is also available with a fixed output voltage of 3.3V, 5V, 6V or 12V. It offers excellent line and load regulation, and makes the LDO suitable for post-regulation of switched mode power supplies (SMPS). The voltage accuracy is ±1% and the power supply rejection ratio is 75dB.

Application Field

LP2966IMM-2828 is ideal for most low power applications where a low dropout voltage and low cost are desired. It is commonly used to power microcontrollers, logic circuits, op-amps, LED drivers, and other small signal circuits that require a stable voltage source. Due to its fixed output voltage options and adjustable output voltage range, it is versatile and can be used in a variety of other applications such as automotive, consumer, industrial and medical.

Working Principle

The LP2966IMM-2828 is an LDO linear voltage regulator that operates by dropping out a regulated voltage from its input voltage. It utilizes a differential amplifier and negative temperature coefficient (NTC) thermistor to regulate its output voltage. The amplifier compares the output voltage with a preset reference voltage and adjusts the amplifier gain accordingly. This amplifier creates a negative feedback loop that prevents the output voltage from exceeding its preset reference voltage. The NTC thermistor acts as a temperature compensator, preventing the output voltage from changing due to changes in temperature. The LP2966IMM-2828 also includes an over-current protection circuit that will shut down the regulator in the event of an overload or short circuit.

Conclusion

LP2966IMM-2828 is an inexpensive, high-performance 10-pin LDO linear voltage regulator. It offers excellent line and load regulation, and is suitable for post-regulation of SMPS. It has wide output voltage range of 1.2V to 28V and is available with a fixed voltage option of 3.3V, 5V, 6V and 12V. The voltage accuracy is ±1% and the power supply rejection ratio is 75dB. It also includes an over-current protection circuit for added safety. These excellent features make LP2966IMM-2828 one of the best options for low power applications where a low dropout voltage and low cost are desired.

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