LX1553CDM

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

LX1553CDM is a step-down (buck) switch controller with flexible channel control. This is a high performance, easy to configure, highly integrated switch controller designed for a variety of switch-mode power supplies in consumer, industrial, communication and automotive applications. Its strong drive capability helps achieve high efficiency, low EMI, great cable voltage drop and small Qg for improved system performance.

The LX1553CDM is designed to operate at a frequency range of 200 kHz to 1.2 MHz and be able to control multiple channels of switches. The controller features overall and phase current limit and near zero current shutdown, which help extend power structure design cycles and improve system reliability. It also provides flexible control options, including programmable deadtime, phase shift, burst and spread spectrum as well as Integrated active voltage positioner (AVP) with auto-centering output voltage capability. This feature also reduces system design time and facilitates ease of use.

The LX1553CDM can be configured to operate in peak current mode or voltage mode control to meet a variety of application requirements. It also features internal thermal protection that prevents overheating in the case of a fault or system overload. It is housed in a 16-pin, 4×4 mm QFN package, suitable for a wide range of PCB designs and has an operating temperature range of -40°C – 125°C.

The LX1553CDM switch controller is used with a step-down (buck) voltage regulator to regulate the output voltage of the power supply. It works by producing pulse width modulation (PWM) signals that are used to control the switch or switch bank of the power supply Stage. The PWM signals cause the switch or switch bank to periodically turn on and off, and creates a duty cycle that corresponds to the target voltage. By controlling the duty cycle and frequency of the PWM signal, the output voltage is regulated.

In addition to voltage control, the LX1553CDM provides several other current control and protection features. The peak current limit prevents the switch or switch banks from exceeding the user-defined limit and enables the use of smaller switches for higher efficiency and lower cost. The near zero current shutdown quickly turns off the switch or switch banks in the event of an overload and protects the system from catastrophic faults. The LX1553CDM also features integrated active voltage positioner (AVP), which enables automatic centering of the output voltage, thus reducing design time and providing an easy-to-use solution.

Finally, the LX1553CDM provides several other features to enhance the user experience and system performance. Flexible control options such as programmable deadtime, phase shift, burst and spread spectrum allow greater time control and improved EMI characteristics. It also provides support for low-power operating modes and diode-emulation mode, which increases power efficiency. The integrated thermal shutdown feature prevents overheating of the system in the event of a fault or overload.

Overall, the LX1553CDM is an excellent choice for use in DC-DC converters and switch-mode power supplies for applications such as consumer, industrial, communication and automotive. Its high performance and flexible features make it a reliable and cost-effective solution for these applications. It is housed in a compact 16-pin, 4×4 mm QFN package and is designed to be used with a step-down (buck) voltage regulator to provide stable and regulated power supply output. Its integrated features, such as active voltage positioner, peak current limit and near zero current shutdown, enable a cost-effective and reliable solution for a variety of power supply applications.

The specific data is subject to PDF, and the above content is for reference