SC2545TSTRT

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The SC2545TSTRT (also known as the SMPS Controller) is an advanced, integrated voltage regulator and DC/DC switching controller typically used in applications such as automotive and consumer electronics. The device offers a high performance and cost-effective solution for controlling the switching power supplies.

With the SC2545TSTRT, the user can enjoy low quiescent current, precision current sensing, configurable operating frequency, integrated pulse-width/duty cycle control, and a wide range of output voltage and current capabilities to power modern electronic systems.

Application Field

The SC2545TSTRT is designed for high-performance, cost-effective implementation of voltage reference and switching power supplies. It can provide superior performance in a wide range of automotive, consumer electronics, and industrial power applications, such as solenoids, DC motors, and ripple current control.

The device is capable of accepting a wide range of input voltages, from 6 V to 42 V, and can accommodate switching frequencies up to 350 kHz to enable high efficiency operation. The device can also be used in low voltage, high frequency applications, such as in battery-operated systems.

Working Principle

The SC2545TSTRT is a DC/DC switching regulator controller specifically designed for the low power and cost-sensitive switching power supplies. It uses a digital phase locked loop (PLL) to synchronize the oscillator and pulse-width modulation (PWM) elements.

The SC2545TSTRT provides a programmable frequency range and configurable current limiting features, and thus can effectively control the power supply output. Its primary operating mode is fixed frequency control with adjustable duty cycle. In this mode, the switching frequency is fixed and the duty cycle (on-time) is adjusted to control the output power.

The device also has a built-in leading-edge blanking (LEB) feature, which reduces the noise generated by the load current sensing and helps to improve efficiency. Additionally, the device includes an open-drain output to indicate an over-temperature condition.

Conclusion

The SC2545TSTRT is a cost-effective, low power, and high performance voltage reference and DC/DC switching regulator controller. It offers a wide range of features, such as configurable operating frequency, integrated pulse-width/duty cycle control, and a wide range of output voltage and current capabilities to power modern electronic systems. This device is ideal for automotive, consumer electronics, and industrial power supply applications, where it can provide superior performance.

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