NCP437

Controlled Load Switch, Ultra-Small, 3.0 A, with Auto-Discharge Path; • 1.0 V - 3.6 V operating range\n• 15 m RDS(ON) at 3.6 V\n• DC current up to 3 A\n• Output Auto-discharge\n\n;

The NCP436 and NCP437 are very low Ron MOSFETs controlled by an external logic pin, allowing optimization of battery life, and portable device autonomy. Indeed, thanks to a current consumption optimization with PMOS structure, leakage currents are eliminated by isolating connected IC on the battery when not used.\n\n

NCP437

3A Ultra-Small Controlled Load Switch

NCP4371

HVDCP 控制器，用于 Qualcomm Quick Charge™ 3.0; • Supports Qualcomm Quick Charge™ 3.0 HVDCP Class A/B\n• Increases system efficiency and reduces charging time\n• Output Voltage Can be Configured in Discreet Steps from Class A: 3.6V up to 12V Class B: 3.6V up to 20V\n• Supports a wide range of applications\n• Constant Voltage and Constant Current Regulation\n• Provides current protection and system robustness\n• Soft Short-Circuit Current Limitation Down to VBUS = 2.2V\n• Provides Short Circuit protection and system robustness\n• USB pins ESD rated to 8 kV\n• Increased robustness\n• Removes a Need for the Secondary Side Shunt Regulator such as TL431\n• Reduced BOM\n• Output Capacitor Safe-Discharge Circuitry at Cable Unplug\n• Safety\n• Low Supply Current\n• Increases system efficiency\n• Wide Operating Input Voltage Range: 2.2V to 28V\n• Design flexibility\n• Compatible with USB Battery Charging Specification Revision 1.2 (USB BC1.2)\n• Fast Dynamic Response\n• Built-in Power Limiting Function\n• Pb-free Device\n;

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.\n\nThe 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. \n\nThe 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.\n\nThe 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.

NCP4371

3.0 HVDCP Controller

NCP4371_16

Qualcomm Quick Charge 3.0 HVDCP Controller

NCP4371AACDR2G

3.0 HVDCP Controller

NCP4371AACDR2G

Qualcomm Quick Charge 3.0 HVDCP Controller

NCP4371AADDR2G

3.0 HVDCP Controller

NCP4371AADDR2G

Qualcomm Quick Charge 3.0 HVDCP Controller

NCP4371AAEDR2G

3.0 HVDCP Controller