OB2619

GENERAL DESCRIPTION

The OB2619 is a highly integrated secondary-side constant voltage and constant current (CV/CC) controller supporting USB PD3.0 including programmable power supply (PPS) mode, Huawei FCP/SCP protocol, Qualcomm QC2.0 and UFCS (Universal Fast Charging Specification) 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.

FEATURES

● Protocol support

● USB PD3.0 with PPS

● Qualcomm QC2.0

● Huawei FCP/SCP

● Universal Fast Charging Specification(UFCS)

● Highly integration

● Embedded 8-bit MCU with 24kB MTP

● Physical Layer of protocols

● 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 3.3V to 21V

● 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）

● External temperature and V/I monitor

● Vbulk high and AC on/off detection

● Rsense short protection

● Package: QFN24

APPLICATIONS

● 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

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