NCP4371AACDR2G

NCP4371 Qualcomm Quick Charge 3.0 HVDCP Controller NCP4371 is a USB secondary side fastcharging controller, supporting Qualcomm Quick Charge 3.0 (QC 3.0) High Voltage Dedicated Charging Port (HVDCP) Class A and Class B specification. www.onsemi.com NCP4371 allows for selection of the output voltage of an ACDC USB adapter based on commands from the Portable Device (PD) being powered. Selecting a higher charging voltage will reduce the charging 8 current for a given power level resulting in reduced IR drops and increased system efficiency. Another advantage of QC3.0 is a decreased 1 battery charging time and a reduced PD system cost thanks to the SOIC8 ability to select an optimum charging voltage. This eliminates the need D SUFFIX for costly DCDC converters within the PD. The USBbus voltage CASE 751 can be controlled in discreet steps from 3.6 V up to 20 V. The output current is limited not to exceed maximum allowable power level. The NCP4371 resides at the secondary (isolated) side of the adapter. MARKING DIAGRAM It includes voltage and current feedback regulation eliminating the 8 need for a shunt regulator such as TL431. 4371XYZW The NCP4371 provides charging current limits down to ALYW VBUS = 2.2 V protecting the portable device from excessive currents in case of a soft shortcircuit condition. 1 The NCP4371 integrates a safedischarge circuitry to quickly and reliably discharge output capacitors in case the USB cable is 4371XYZW = Specific Device Code unplugged or connected to a 5 V only USB port. (See Device Options Table) A = Assembly Location Features L = Wafer Lot Supports Qualcomm Quick Charge 3.0 HVDCP Class A/B Y = Year W = Work Week Output Voltage Can be Configured in Discreet Steps from = PbFree Package Class A: 3.6 V up to 12 V Class B: 3.6 V up to 20 V Compatible with USB Battery Charging Specification Revision 1.2 (USB BC1.2) PIN CONNECTIONS Constant Voltage and Constant Current Regulation DISCHARGE VCC Soft ShortCircuit Current Limitation Down to V = 2.2 V BUS DRIVE GND Removes a Need for the Secondary Side Shunt Regulator such as ISNS D TL431 D+ COMP Output Capacitor SafeDischarge Circuitry at Cable Unplug (Top View) Fast Dynamic Response Builtin Power Limiting Function Low Supply Current ORDERING INFORMATION Wide Operating Input Voltage Range: 2.2 V to 28 V See detailed ordering, marking and shipping information in the package dimensions section on page 13 of this data sheet. These Devices are PbFree, Halogen Free/BFR Free and are RoHS Compliant Typical Applications Fast Charging AC/DC Adapters for Smart Phones, Tablets and Other Portable Devices Semiconductor Components Industries, LLC, 2017 1 Publication Order Number: March, 2017 Rev. 0 NCP4371/DNCP4371 R SENSE R DIS Figure 1. Typical Application Schematic www.onsemi.com 2 D3 VIN ~ USB C1 D2 D4 VBUS D+ VCC D C OUT R5 C5 R1 D1 GND C6 R6 R2 DRIVE DISCHARGE T1 R4 OPTO HV ZCD DRV R3 R7 CS ISNS VCC VCC R CS VCC FB C4 GND C2 COMP GND Flyback C3 Controller D D+ NCP4371