LT1964IS5-SD#TRPBF - Low Noise, Low Dropout Negative Regulator

The LT1964IS5-SD#TRPBF is a high-performance, low dropout negative voltage regulator designed by Linear Technology. This regulator is well-suited for applications requiring a low noise power supply with a negative output voltage. The LT1964IS5-SD#TRPBF is capable of delivering up to 200mA of continuous output current while maintaining a low dropout voltage of only 340mV at full load, which makes it an excellent choice for low voltage applications.

One of the key features of this regulator is its low noise output, which is critical for sensitive analog circuits and precision instrumentation. With a low noise figure of only 30µVRMS over a 10Hz to 100kHz bandwidth, the LT1964IS5-SD#TRPBF ensures that power supply noise does not compromise the performance of the attached circuitry.

The device operates with a wide input voltage range from -2.2V to -20V, offering a high degree of flexibility for various design requirements. Additionally, it is stable with a 3.3µF output capacitor, which allows for the use of cost-effective capacitors with low equivalent series resistance (ESR). The regulator's fast transient response further enhances its performance in dynamic load conditions.

The LT1964IS5-SD#TRPBF is also packed with protection features. It includes overcurrent and overtemperature protection, ensuring reliable operation under abnormal operating conditions. The regulator comes in a small SOT-23 package, which is ideal for space-constrained applications.

For design flexibility, the output voltage is adjustable from -1.22V to -20V with a single external resistor, allowing designers to tailor the output to specific needs. The device features a low shutdown current of less than 1µA, which is beneficial for battery-powered and energy-conscious applications.

In summary, the LT1964IS5-SD#TRPBF from Linear Technology is a versatile, high-performance negative regulator that offers low noise, low dropout, and a range of features designed to ensure stable and reliable operation in a variety of applications. Its small footprint and adjustable output make it an ideal choice for designers looking to optimize their power supply solutions.