3.1A Car Charging Chip Solution Recommendation CX8822/CX8825, providing free CX8825 samples and technical support!

A customer has chosen the 3.1A car charging chip solution, and we generally recommend the 3.1A car charging CX8822 or CX8825. Of course, the specific selection of the solution depends on the customer's requirements (input, output, how much current to use?).

What are the differences between CX8822 and CX8825?

Firstly, CX8822 has a fixed output voltage of 5V, while CX8825 has an adjustable output voltage of at least 2.5V

Furthermore, the CX8825 can be paired with the protocol chip FP6601Q for a QC3.0 fast charging solution

There is not much difference between CX8822 and CX8825, as well as the CX8822 and CX8825 specifications:

CX8822 Overview:

CX8822 is a step-down DC-DC converter with an input withstand voltage of up to 36V and the ability to achieve precise constant voltage and current

CX8822 has a built-in 50m Ω High side PMOS and 30m Ω Low side NMOS, which can support 3A continuous output current

CX8822 has high-performance load response and input voltage response capabilities, while precise constant voltage and constant current control loops achieve minimal load regulation and linearity

CX8822 does not require external compensation and can rely on its built-in stable loop to achieve constant current and voltage control, while also having cable voltage drop compensation function adjustment rate

CX8822 is a constant voltage, constant current, and step-down DC-DC converter with minimal application, excellent performance, and stable reliability

Features:

• Input withstand voltage can reach 36V

• Input with overvoltage protection

• Built in 50m Ω High side PMOS

• Built in 30m Ω Low side NMOS

• Can support 3A continuous output current

• Built in high-precision constant current and constant voltage control loop

• Constant current accuracy ± 6%

• Constant pressure accuracy ± 2%

• No external compensation required

• 135k Hz fixed switching frequency

• Cable compensation voltage drop

• Ultra simple application circuit

• Short circuit protection (SCP), overheat protection (OTP), overvoltage protection (OVP), and undervoltage protection (UVLO)

• SOP-8L packaging form

Application:

• Car charger 

• lighting

• portable device power supply