描述 Description

The uP9612 is a USB dedicated charging port (DCP)converter, used for the charging of mobile phones andtablets. The uP9612 is a high-efficiency synchronousrectifiedbuck converter with an internal power switch. Withinternal low RDS(ON) switches, the high-efficiency buckconverter is capable of delivering up to 3A output currentfor charger interface and a wide input voltage range from8V to 29V. It operates in either CV (Constant OutputVoltage) mode or CC (Constant Output Current) mode andprovides a current limitation function. The uP9612 has aconstant output voltage of 5.1V for USB 2.0, BC1.2 andDivider Mode that is detected from D+ and D- line. Otherfeatures for the buck converter include internal soft-start,adjustable external CC (Constant Output Current) limitsetting, built-in fixed line-compensation, short circuitprotection, VIN/VOUT over voltage protection, and overtemperature protection. It is available in space savingPSOP-8L and VDFN6x5-8L packages.

特性 Features

·8V to 29V Wide Input Voltage Range.
·Up to 3A Output Current.
·CV/CC Mode Control (Constant Voltage and Constant Current).
·Automatic Selection of D+/D- Mode for an Attached Device
·Apple Mode: D+/D- Divider Mode 2.7V and 2.7V.
·Short Mode:BC 1.2DCP Mode.
·Samsung Mode: D+/D- Divider Mode 1.2V and 1.2V.

·Output Constant Voltage: 5.1V.
·Output Voltage Accuracy: ±1.5%.
·Fixed 135kHz Frequency Operation.
·Up to 95% Conversion Efficiency.
·Internal Soft Start: 10ms.
·Fixed Cable Compensation Voltage.
·Adjustable External CC (Constant Output Current) Limit Setting: Default = 2.6A.
·CC (Constant Output Current) Limit Accurarcy:±3%.
·Short Circuit Protection.
·VIN/VOUT Over Voltage Protection and Over Temperature Protections.
·PSOP-8L and VDFN6x5-8L Packages.
·RoHS Compliant and Halogen Free.

應(yīng)用 Application

·PDA Like Device Car Chargers.
·Portable Charging Devices