TS33010-M033QFNR

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The TS33010-M033QFNR is a 2.5A single-channel synchronous switching voltage regulator with a step-down power conversion design. The device uses an integrated PMOS synchronous Rectifier, a peak current mode control structure, and a simple external components configuration, with a wide input voltage range from 3V to 40V and an adjustable output voltage range from 0.8V to 30V. It also offers operating transition frequency up to 1MHz and excellent thermal performance, making it a great selection for applications such as Total Harmonic Distortion (THD) requirements, notebook/computer power supplies, USB power, communications and office automation systems.

The TS33010-M033QFNR switching regulator has two major regulating modes: CCM and DCM. In constant on-time control mode(CCM), the pulse width modulation (PWM) frequency is adjustable based on the load current, thus bridge the performance gap between discontinuous and continuous current mode control (DCM). In DCM, the device works in peak current mode with a fixed frequency, therefore achieve excellent dynamic stability.

Using its simple externally adjustable components, the output voltage can be adjusted between 0.8V to 30V. It also features a current sense threshold adjustment, which allows the device to effectively regulate, over-current, inrush and over-voltage protection. With its independent VCC and PG circuits, it ensures the output voltage remains stable, even during heavy load. Furthermore, it is equipped with a soft start function, to prevent large inrush current flows which results in higher system efficiency.

The TS33010-M033QFNR switching regulator is an excellent choice for low voltage and high power applications, such as notebook/computer power supplies, USB power, communications and office automation systems due to the wide input and adjustable output voltage range, high efficiency, excellent thermal performance and fast response time. It also provides a range of protection functions, and adjustable current sense threshold.

The working principle for TS33010-M033QFNR is based on the PMOS synchronous rectifier, in which the output current is equal to the inverse of switch duty cycle. In order to regulate the output current and achieve the required output voltage, an integrated peak current mode control structure is used to control the PWM duty cycle of the device. In addition, when a load or an input voltage change is detected, it auto adjusts its duty cycle to maintain output voltage.

Moreover, it also requires only a few external components including inductor, output capacitor and freewheeling diode. The output capacitor filters out the switching noise and provides a constant output voltage as well as stability circuit. The output inductor on the other hand, is used to reduce the output ripple voltage, by reducing the output voltage at switching frequency. The freewheeling diode is used to prevent leakage from the inductor, when the switching transistor is off.

In conclusion, the TS33010-M033QFNR is a high performance and efficient switching regulator with a wide input and adjustable output voltage range, fast response time, excellent thermal performance, adjustable current sense threshold, over-current, inrush and over-voltage protection. Its versatile operating modes, simple external components configuration, and protection features make it suitable for applications such as notebook/computer power supplies, USB power, communications and office automation systems.

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