CXLB73324A is a protocol controller chip that conforms to the USB Type-C PD3.0 (including PPS) standard. It can automatically carry out communication handshake with the charging equipment according to the voltage set by the peripheral circuit (such as 5V, 9V, 12V, 15V, 20V) to complete the application and configuration of the target voltage. The chip not only supports a variety of common voltage gears, but also has an intelligent identification and switching mechanism to ensure that other available voltages can be selected according to preset logic when the set voltage is not detected, which greatly improves the compatibility and user experience of the device.
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[ CXLB73324 ]"
In today's fast-growing electronic equipment market, efficient and intelligent power management solutions have become a core requirement for all types of portable devices and industrial applications. As a highly integrated and powerful Type-C PD3.0 protocol chip, CXLB73324A is gradually becoming the first choice for power design engineers due to its excellent compatibility, flexible voltage configuration and a wide range of application scenarios. This article will provide an in-depth introduction to the characteristics, working principles, typical applications and technical details of the CXLB73324A to help engineers better understand and use the chip to promote the rapid launch of products.
1. Chip Overview and Core Features
CXLB73324A is a protocol controller chip that conforms to the USB Type-C PD3.0 (including PPS) standard. It can automatically carry out communication handshake with the charging equipment according to the voltage set by the peripheral circuit (such as 5V, 9V, 12V, 15V, 20V) to complete the application and configuration of the target voltage. The chip not only supports a variety of common voltage gears, but also has an intelligent identification and switching mechanism to ensure that other available voltages can be selected according to preset logic when the set voltage is not detected, which greatly improves the compatibility and user experience of the device.
Its main features include:
· Fully compatible with USB Type-C PD3.0 and PPS protocol;
· Support multiple output voltage settings, up to 20V;
· Automatically identify the charger fast charging protocol and trigger the corresponding voltage;
· Support simulation emarker mode (CXLB73324AE version), suitable for wire design;
· The compact SOT23-5 package is suitable for applications with limited space.
2. pin function and electrical parameters
The CXLB73324A provides 5 functional pins, specifically defined as follows:
· FUNC: External resistor, used to set the application voltage;
· GND: Power supply ground;
· VDD: Chip power input (3V ~ 5.1V);
· CC1/CC2PD protocol communication pin for Type-C interface communication.
The chip can work stably in the environment of -40°C to 105°C, and has good temperature adaptability and reliability. Its maximum operating voltage range is -0.3V to 5.5V. Users should pay attention to avoid exceeding this range when designing to prevent chip damage.
3. voltage setting and configuration method
CXLB73324A through the FUNC pin external resistors of different resistance values to achieve a variety of output voltage settings, the specific correspondence is as follows:
· Suspended: 5V
· 200KΩ:9V
· 120KΩ:12V
· 51KΩ:15V
· Grounding: 20V
This flexible configuration allows the same chip to adapt to multiple device requirements, greatly simplifying the complexity of product line design.
4. Typical Application Scenarios and Wiring Schematic Diagram
CXLB73324A are widely used in various USB Type-A/C power input devices, including but not limited:
· Wireless charging equipment
· bluetooth speaker
· On-board power supply system
· Energy storage power supply
· Industrial Test Equipment
In terms of wiring, depending on the type of interface, the connection methods of CC1 and CC2 are also different:
· Type-C mother seat: Both CC1 and CC2 need to be connected to the interface;
· Type-C male head: Only one CC pin needs to be connected, and the other pin is suspended;
· male head with emarker function(CXLB73324AE is required): One CC is connected to the Type-C interface, and the other CC is grounded through a 1kΩ resistor.
5. packaging and mechanical dimensions
The CXLB73324A is available in a standard SOT23-5 package with a compact size for high-density PCB layouts. The detailed mechanical dimensions are in accordance with JEDEC MO-178 and the key dimensions are as follows (in mm):
· Package length (D):2.82-3.02
· Width (E):2.60-3.00
· Pin pitch (e):0.95 BSC
For complete dimensional parameters, please refer to the package diagram and size table in the data sheet.
6. Selection Recommendations and Product Series
For applications that only need to support the PD3.0 protocol and the maximum voltage is 20V, CXLB73324A is recommended. If you need to support 28V/36V/48V high voltage output under PD3.1 protocol, it is recommended to use CXLB73324B series products. In addition, if the design needs to simulate emarker functions, the CXLB73324AE version should be selected.
7. epilogue
As a highly integrated and flexible Type-C PD protocol chip, CXLB73324A not only meets the needs of modern electronic equipment for efficient power management, but also provides a strong technical support for product design through its wide compatibility and diversified application support. JTM-IC (jtm-ic.com) As a professional integrated circuit solution provider, we will continue to provide customers with high-quality products and technical support to help innovative design and technology implementation.
For more information about CXLB73324A technical information, sample application or purchase information, please visit JTM-IC official website or contact our technical support team.
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