Описание
The iW620 is a Qualcomm QC2.0 compatible USB adaptive voltage position controller for use in HVDCP AC/DC chargers/adapters. The device allows fast charging of QC2.0-enabled portable devices (PDs). The iW620 resides on the secondary side of an AC/DC power supply and allows the adapter to be configured for 5V, 9V, or 12V output depending on the voltage requested by the PD. It can be used in Dialog’s primary-side controlled AC/DC systems to achieve fast voltage transition, low no-load power consumption and fast dynamic load response. The iW620 eliminates shunt regulator and loop compensation components at the secondary side and it has a built-in opto-coupler LED driver to minimize the bill of material cost.
- Supports Qualcomm® Quick Charge 2.0 (QC2.0) High Voltage Dedicated Charging Port (HVDCP) Class A with voltage configuration of 5V, 9V, and 12V
- Backward compatible with USB Battery Charging Specification Revision 1.2 (USB BC1.2) Dedicated Charging Port (DCP)
- Programmable active fast discharge from 9V/12V to 5V at USB cable unplug or from a high voltage level to a lower level upon request with built-in switch or external switch
- Normally OFF state with <120mA cut-off current during 5V steady-state operation to achieve <30mW power consumption at no load
- Wide operating voltage range from 3V to 25V
- Built-in opto-coupler LED driver with minimum driving current of 2mA
- 6-lead SOT-23 package
