NCP4371 - ON Semiconductor

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

NCP4371
Manufacturer

ON Semiconductor
ChipWorker Part#

CW1242879919
Description

3.0 HVDCP Controller
Documentation

Datasheet

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Product Description

NCP4371 is a USB secondary side fast-charging controller, supporting Qualcomm Quick Charge™ 3.0 (QC 3.0) High Voltage Dedicated Charging Port (HVDCP) Class A and Class B specification. NCP4371 allows for selection of the output voltage of an AC-DC USB adapter based on commands from the Portable Device (PD) being powered. Selecting a higher charging voltage will reduce the charging current for a given power level resulting in reduced IR drops and increased system efficiency. Another advantage of QC3.0 is a decreased battery charging time and a reduced PD system cost thanks to the ability to select an optimum charging voltage. This eliminates the need for costly DC-DC converters within the PD. The USB-bus voltage can be controlled in discreet steps from 3.6V up to 20V. The output current is limited not to exceed maximum allowable power level. The NCP4371 resides at the secondary (isolated) side of the adapter. It includes voltage and current feedback regulation eliminating the need for a shunt regulator such as TL431. The NCP4371 provides charging current limits down to VBUS=2.2V protecting the portable device from excessive currents in case of a soft short-circuit condition. The NCP4371 integrates a safe-discharge circuitry to quickly and reliably discharge output capacitors in case the USB cable is unplugged or connected to a 5V only USB port.
Features | | Benefits
---|---|---
| | | | |
Supports Qualcomm Quick Charge™ 3.0 HVDCP Class A/B
| |
Increases system efficiency and reduces charging time
Output Voltage Can be Configured in Discreet Steps from Class A: 3.6V up to 12V Class B: 3.6V up to 20V
| |
Supports a wide range of applications
Constant Voltage and Constant Current Regulation
| |
Provides current protection and system robustness
Soft Short-Circuit Current Limitation Down to VBUS = 2.2V
| |
Provides Short Circuit protection and system robustness
USB pins ESD rated to 8 kV
| |
Increased robustness
Removes a Need for the Secondary Side Shunt Regulator such as TL431
| |
Reduced BOM
Output Capacitor Safe-Discharge Circuitry at Cable Unplug
| |
Safety
Low Supply Current
| |
Increases system efficiency
Wide Operating Input Voltage Range: 2.2V to 28V
| |
Design flexibility
Compatible with USB Battery Charging Specification Revision 1.2 (USB BC1.2)
| |
Fast Dynamic Response
| |
Built-in Power Limiting Function
| |
Pb-free Device
| |

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