BA17810CP-E2

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The BA17810CP-E2 is a monolithic, step-down DC-DC converter integrated circuit. Its primary application is to provide a regulated power source from an unregulated source by converting a higher output voltage to a lower, more usable voltage. It serves many purposes, including applications in automotive electronics, telecommunications, consumer electronics, small home appliances and industrial equipment. The device can also be used for voltage regulation, battery charging and for cascading multiple components for higher output current requirements.

The BA17810CP-E2 features a constant-output voltage with a wide input voltage range from 4.5V to 18V, making it ideal for automotive systems and other applications operating on a wide range of operating voltages. This device utilizes pulse-by-pulse current limiting, providing optimal safety should an overload occur. Other features include a fast line-drop compensation for low output ripple and jitter, thermal protection, and a wide operating temperature range of -40 to +105 °C.

Working Principle

The BA17810CP-E2 uses a voltage-mode control scheme to regulate its output voltage. This scheme consists of a power control loop and a current limit loop that work together to create an output voltage that is extremely stable and accurate. The power control loop monitors the feedback voltage of the output, compares it to the reference voltage, and adjusts the duty cycle of the circuit accordingly. The current limit loop is responsible for preventing the circuit from drawing more current than is deemed safe. When the limit loop senses that the current is exceeded, it will shut down the circuit until the current is lowered.

The device also features a low-on-resistance switch, which allows for better efficiency and improved thermal performance, as well as a higher switching frequency for more efficient use of space and size. Additionally, the device has an internal protection feature which prevents it from being damaged if the output voltage is shorted out.

Applications

The BA17810CP-E2 is widely used in many automotive applications, including engine control modules (ECMs), vehicle security systems, airbag systems, antilock braking systems (ABS), and power steering systems. It is also suitable for commercial applications, such as portable electronic devices, battery chargers, cellular phones and digital still cameras.

The device is also used in home appliances and industrial equipment, including highly regulated systems such as medical instruments and industrial process controllers. Furthermore, the device is an excellent choice for cost-sensitive, low power and low voltage applications.

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