General Description       

        The OB2609 is a highly integrated secondary-side constant voltage and constant current (CV/CC) controller supporting HUAWEI SCP protocol. It is designed for use in applications that require Constant Voltage (CV) and Constant Current (CC) regulation. Two operational amplifiers are built in for voltage loop and current loop regulation with programmable voltage references according to protocols. The high gain current sense amplifiers minimize the offset for decreasing power loss of sense resistor.


Protocol support

USB BC 1.2 protocol

HUAWEI SCP A/B protocol

Qualcomm Quick Charge 2.0

HUAWEI Automatic identification of protocols

Highly integration

Secondary-Side Constant Voltage (CV)and Constant Current(CC)regualtion

Built-in two operational amplifiers for dual CV/CC control

Built-in unplug fast discharging control

Programmable cable drop compensation

Built-in blocking N-MOSFET Gate Driver

Built-in opto-coupler driver

Low operating current

Wide operation voltage range from 3.4V to 12V

Comprehensive protection and monitor

Output over voltage protection(OVP)

Output under voltage protection(UVP)

D+/D- over voltage and abnormal protection

External over temperature protection(OTP)

Internal temperature and V/I monitor and report

Vbulk high and AC on/off detection

Package: DFN12



Quick-charging AC/DC charges for cell phones, tablets and other portable devices

AC/DC Adapters for Portable Devices that Requires CV/CC control

Typical Application Schematic