LTC1159CG#TRPBF

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The LTC1159CG#TRPBF is a CMOS integrated circuit from Analog Devices, Inc. designed for use as a DC/DC switching controller with internal PWM and/or frequency generator circuitry for two or three-terminal control. It is a voltage regulator specifically designed to provide over-current and short-circuit protection to a variety of DC/DC topologies, including buck, boost, flyback, forward, and Cuk converters. It can also be used to regulate the DC/DC converter outputs, providing excellent accuracy and long-term stability.

The LTC1159CG#TRPBF can be used to build linear and switch mode power supplies, voltage regulators, and bipolar power converters. The device is optimized for low voltage operations, making it suitable for applications like digital logic power supplies and automotive electronics. It comes with an internal oscillator and PWM circuitry, along with slew rate control, that greatly simplifies the design of the control loop. The device includes a pull-down circuit, which allows it to stay in a specified frequency without external components, even when the output is disabled.

The IC provides on-chip over-current and short-circuit protections with programmable thresholds. An external MOSFET connected to the IC’s gate allows for rapid response to short-circuits. The IC provides an adjustable frequency of 500 kHz to 10 MHz, enabling higher power conversion efficiency for applications that require frequencies of up to 1 MHz. It also provides an internally generated 3 kHz clock for low frequency applications such as line power applications.

The LTC1159CG#TRPBF features an adjustable undervoltage lockout (UVLO) to prevent the switching from starting until the input voltage is above some preset level to prevent out of regulation conditions. It also includes an adjustable switching frequency, allowing designers to optimize their designs for maximum efficiency. In addition, the device can be programmed to operate in either voltage-mode or current-mode control, providing design engineers with flexibility during system design.

Applications of the LTC1159CG#TRPBF include switching LED drivers, DC/DC power supplies, and bipolar power supplies, as well as many others. It can be used in portable electronics, automotive electronics, and industrial applications. It is an essential component in providing reliable power conversion solutions with low parts count and high efficiency. The device is also available in a variety of package sizes and environmental conditions for versatile design.

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