CX8823 is applied to JOYROOM's wired 2A1C port 48W car Bluetooth transmitter, with USB-C supporting 30W fast charging and USB-A supporting 18W QC fast charging. It provides car Bluetooth solution development and demo board testing.

The parameters are as follows:

• DC input: 12-24V

• PD output: 5V3A, 9V3A, 12V2.5A, 15V2A, 20V1.5A; (Up to 20V1.5A)

• PPS:3.3-11V3A

• USB-1/2 QC fast charging output: 5V3A/9V2A/12V1.5A

• USB1+USB2 or USB-A1+A2 output: 5V4A

• PD+USB1/2:5V4A

• Total output: 30W+18W, total 48W

• USB-A1 port/USB-A2 port supports Apple 2.4, QC3+, AFC, FCP fast charging protocols

• The USB-C port supports QC3+, AFC, FCP, PD3.0, and PPS fast charging protocols, with 5V3A/9V3A/12V25A/15V2A/20V1.5A and PPS voltage ranges of 3.3-11V3A PPS.

When the car charger is at 24V input, it supports 20V1.5A 30W output; When the car is charging at 12V output, it supports 12V2.5A 30W output. The USB-C interface can meet the fast charging needs of most devices, and three USB interfaces can also charge three devices simultaneously. The driver, passenger, and dash cam can all meet the demand for simultaneous charging.

CX8823 is used for power supply of car charging Bluetooth module. CX8823 is an input 8V-30V, with built-in High side and Low side, which can support 3.1A continuous output current and has high-performance load response and input voltage response capabilities. At the same time, it has a constant current and precise constant voltage control loop to achieve load adjustment rate and linear adjustment rate. CX8823 does not require external compensation and can rely on its own built-in stable loop to achieve constant current and constant voltage control.

The CX3419 is used for USB-A port output control, which is a P-channel MOS transistor with a -30V withstand voltage of -30A, 8m Ω, and DFN3.3 * 3.3 packaging. It is commonly used in PWM applications, load switches, power management, and more.

The complete solution of this integrated car Bluetooth transmitter launched by Jiletang includes: Bluetooth main control+CX8823+NDP1460QB+XPD977+CX3419

The JOYROOM JLT 48W in car Bluetooth transmitter with cable features 2A1C multi port output, supports 30W+18W simultaneous fast charging, and supports PPS fast charging, which is very compatible with mobile phone fast charging. Moreover, this car charger can automatically adjust the output voltage level according to different input voltages. When used with 24V vehicles, it supports 20V PD output, meeting daily laptop charging needs.