Summary:

CX8576 is a step-down DC-DC converter with an input withstand voltage of 30V and the ability to achieve precise constant voltage and dual constant current.

CX8576 is equipped with 10m Ω High side N MOS and 10m Ω Low side NMOS, which can support 4.8A continuous output current and adjustable output voltage, with a maximum support of 95% duty cycle.

CX8576 achieves external shutdown function by lowering the logic level of the COMP/EN pin and entering standby mode. External compensation enables the feedback control loop to have good line voltage adjustment rate and load adjustment rate, and the peripheral design is flexible.

CX8576 is a constant voltage, constant current, and step-down DC-DC converter with minimal application, excellent performance, and stable reliability.

Characteristic:

• Input voltage can reach 4.75V-30V

• Built in 10m Ω High side NMOS

• Built in 10m Ω Low side NMOS

• Support 4.8A continuous output current

• Support 95% duty cycle

• Output voltage and current can be set (2.5V-20V)

• Constant current accuracy ± 6%

• Constant voltage accuracy ± 2% (VFB=1.0V)

• Cable compensation voltage drop

• Adjustable switching frequency (110KHz-220KHz)

• COMP pin achieves both external compensation and shutdown control simultaneously

• Short circuit protection (SCP), overheat protection (OTP), overvoltage protection (OVP).

• The built-in SW cycle by cycle detection mode can prevent RSENT current limiting resistor short circuits from damaging the product.

• QFN20L-5 × 5 Packaging Forms

Application scope:

• Car charger

• Portable device power supply