Description

HM1498 is a monolithic USB charger integrated with both a 30V, 3.1A DC-DC converter and USB charging port controller, which can automatically detect Apple® Devices, Samsung Devices and general BC1.2 & YD/T 1591-2009 devices.

HM1498 includes a 36V, 76mΩ high side and a 36V, 52mΩ low side MOSFETs to provide 3.1A continuous load current over 6.5V to 30V wide operating input voltage with 30V input over voltage protection. Peak current mode control provides fast transient responses and cycle-by-cycle current limiting.

HM1498 has configurable line drop compensation, configurable charging current limit. CC/CV mode control provides a smooth transition between constant current charging and constant voltage charging stages. Built-in soft-start prevents inrush current at power-up.

HM1498 provides a full USB charging solution in a small ESOP8 package, which can be easily fit into a narrow space PCB application

Features

● 3.1A continuous output current capability

● 6.5V to 30V wide operating input range with input Over Voltage Protection

● Up to 96 efficiency

● Integrated 36V, 76mΩ high side and 36V, 52mΩ low side power MOSFET switches

● CV/CC Mode control (Constant voltage and constant current). Cycle-by-Cycle Current Limiting

● Automatic USB charger Identification, Support Apple® Devices fast charging. (Apple® 2.4A mode). Support Samsung® Devices fast charging. Support BC1.2 & YD/T 1591-2009 charging spec

● Configurable Line Drop Compensation with resistor

● Configurable Charging Current Limit with resistor

● Internal Soft-Start limits the inrush current at turn-on

● Internal compensation to save external components

● Input Under-Voltage Lockout.

● Input over-voltage protection to protect device from working in high voltage and high current condition

● Output short protection with both high side current limit and low side current limit to protect the device in hard short

● Soft start up for both output voltage and output current

● Output Over-Voltage Protection

● Over-Temperature Protection

● Soft start time is programmable

● Pulse skip mode at light load to improve light load efficiency

● Thermally Enhanced ESOP-8 Package

Applications

● Car charger

● Portable charging device

● General purpose USB charging