Jackery bi-directional fast charging outdoor power bank station, which uses the CX8855 for the DC buck circuit.

The CX8855 is a step-down DC-DC converter with an input withstand voltage of up to 32V and is capable of realizing precise constant voltage and constant current.

CX8855 built-in 30mΩ High-side PMOS and 20mΩ Low-side NMOS, can support 3.4A continuous output current output voltage adjustable, maximum support for 100% duty cycle, with high-performance load response and input voltage response capability, while the accurate constant voltage and constant current control loop to achieve a very small load adjustment rate and linear adjustment rate. It is available in SOP-8L package.

In addition, CX8855 has been adopted by ORICO 156.6Wh portable energy storage power supply, ZEEKR 1200W power bank station, DJI Mavic 3 65W GaN fast charger and other products.

Overview:

The CX8855 is a buck DC-DC converter with an input voltage of up to 32V, and is capable of realizing precise constant voltage and constant current.

The CX8855 features a built-in 30mΩ High-side PMOS and 20mΩ Low-side NMOS, and supports 3.4A continuous output current with adjustable output voltage and up to 100% duty cycle.

The CX8855 features high performance load response and input voltage response, while the precise constant voltage and constant current control loops achieve very low load and linear slew rates.

The CX8855 requires no external compensation and relies on its own built-in stabilization loop for constant current and constant voltage control with cable drop compensation.

The CX8855 is an extremely versatile, high performance, stable and reliable constant voltage and constant current buck DC-DC converter.

Features:

Input withstand voltage up to 32V

Built-in 30mΩ High-side PMOS

Built-in 20mΩ Low-side NMOS

Supports 3.4A continuous output current

Supports 100% duty cycle

Output voltage and current can be set

Constant current accuracy ±8% 

Constant Voltage Accuracy ±2 

No external compensation required

135k Hz fixed switching frequency

Cable compensated voltage drop

Short Circuit Protection (SCP), Over Thermal Protection (OTP), Over Voltage Protection (OVP)

SOP-8L package

Application Areas:

Automotive chargers, lighting, portable device power supplies