LT1121IS8#PBF

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LT1121IS8#PBF is a monolithic linear Low Dropout (LDO) voltage regulator that provides fast, ultra-low voltage and current operation. It’s a compact and reliable solution for all voltage regulation needs in modern system development. It’s a low power device that is designed to switch quickly and accurately to maintain a regulated output voltage, even under extreme load and temperature conditions.

LT1121IS8#PBF is a high precision, low noise, low power low forward voltage drop electronic device specifically engineered to deliver low current, with high voltage accuracy, high efficiency and low overhead power consumption. This device is suitable for a wide range of applications, such as amplifiers, filtration, data logging, heating systems, audio and video systems.

The main advantages of the LT1121IS8#PBF include low voltage, current, static and dynamic temperature coefficients, low quiescent current draw, wide input voltage and temperature range, high ripple rejection, ultra-high accuracy and low profile. LT1121IS8#PBF is suitable to match a wide range of applications and it offers an environment-friendly alternative to linear regulators.

LT1121IS8#PBF is a precision programmable band gap voltage reference, providing excellent line and load regulation and low dropout voltage. Its drop-out voltage is typically only 3mV at 20mA. The junction-to-ambient thermal resistance is only 140°C/W.

The LT1121IS8#PBF is easy to use; the output voltage is synchronized to the input supply and only requires two external components for proper operation, an optional output capacitor for stability, an optional reference bypass capacitor for improved ripple rejection, and external current limit protection to ensure proper self-protection. It can be programmed to multiple output voltages, giving the user the flexibility to provide an optimal power solution for their project.

The LT1121IS8#PBF works by controlling output voltage through feedback loops. When an output voltage is taken from an input voltage supply, the output voltage changes in a non-linear manner. The LT1121IS8#PBF uses a negative feedback loop to maintain the output voltage at a predetermined level regardless of the load variation.

It features adjustable current limit protection, and a wide operating temperature range of -40°C to 125°C. The device is available in an 8-pin narrow SOT-23 package, making it ideal for space-constrained systems such as mobile devices and other portable electronics. In terms of power efficiency, this device is up to 93.5% efficient at 20mA, reaching up to >99% efficiency at light load conditions.

The LT1121IS8#PBF is well suited for low voltage, low power applications, providing extremely low-dropout voltage, high performance and low profile. It can be used for variety of applications including microcontrollers, displays, DSPs, amplifiers, data logging, heating systems, audio and video systems, and consumer electronics.

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