LT1085IT-12#PBF

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The LT1085IT-12#PBF is a high-performance, monolithic low-dropout linear regulator from Linear Technology. It is specifically designed as a replacement for the widely used NE555 timer IC, providing superior performance with very low power consumption and improved reliability. The LT1085IT-12#PBF is ideal for applications such as automotive systems, industrial, telecommunications, and computer products.

The LT1085IT-12#PBF is a fixed 1.2V voltage regulator. It features low quiescent current, fast transient response and excellent power supply rejection. It is also highly stable over line and load, and provides a low output noise level. The device also includes an integrated output current sense and thermal shutdown protection.

The LT1085IT-12#PBF operates with a maximum input voltage of 29V and a minimum input voltage of 7V. The output current is limited to 1A. The device features a specified output voltage accuracy of ±0.4%. A wide range of output voltage adjustments are available via an external resistor divider network. The on-chip current-limiting protection ensures over-current protection in the event of a current overload.

The LT1085IT-12#PBF employs a three-terminal design with very low quiescent current. The on-chip trimmed reference voltage maintains tight regulation over a wide range of operating conditions. The regulating FET sink current is mirrored between the FB and VIN pins, allowing for a more stable supply voltage as the input voltage changes. The device also includes an output current sense feature, which allows for fast and accurate protection against over-current fault conditions.

The LT1085IT-12#PBF is especially suitable for applications that require a low noise output, low power consumption and high level of stability. The device is ideal for use in automotive systems, industrial, telecommunications, and computer products. The device is also particularly suitable for powering timing circuits and interfaces, such as CAN controllers and ISDN circuits. In addition, the device is highly suitable for use as a secondary regulator in systems that require multiple voltage rail outputs.

In summary, the LT1085IT-12#PBF from Linear Technology is a high-performance, monolithic low-dropout linear regulator that is designed for applications such as automotive systems, industrial, telecommunications, and computer products. It features a wide input voltage range, fast transient response, low quiescent current, excellent power supply rejection and output current sense protection. It is highly suitable for powering timing circuits and interfaces, as well as secondary regulators in multiple voltage rail systems.

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