IW636-21

Power Supply Controllers, Monitors Overview

The iW636-21 is a Rapid Charge secondary-side controller for USB interfaces, supporting Qualcomm Quick Charge 3.0 and 2.0 protocols. It operates with the iW1782 or iW1780H primary-side AC/DC digital controllers to enable rapid charging of compatible mobile devices. The device integrates an optocoupler driver that relays commands to the primary-side controllers. This chipset configuration achieves efficiency as high as 90%, facilitating higher power density for small form factor fast charging adapters.

Power Supply Controllers, Monitors Feature Summary

• Supports Qualcomm Quick Charge 3.0 and 2.0 technologies with secondary-to-primary communication protocol
• Integrates an optocoupler driver to relay commands to iW1782 or iW1780H AC/DC controllers
• Utilizes SmartDefender smart hiccup technology to address soft shorts in cables and connectors

Power Supply Controllers, Monitors Applications

• Multi-cell USB PD power banks with Quick Charge 2.0/3.0 support
• Rapid charging AC/DC adapters for smartphones
• Rapid charging AC/DC adapters for tablets and other portable devices

Power Supply Controllers, Monitors Procurement Notes

Verify current availability status directly with authorized distributors or Renesas Electronics, as supply may be limited or subject to factory special orders. Confirm package options such as SOT23-6L and reel/cut tape configurations match design requirements. Ensure compliance with RoHS standards and check for any regional sales restrictions before finalizing procurement plans.

Power Supply Controllers, Monitors Selection Notes

Select this component when designing AC/DC converters requiring compatibility with Qualcomm Quick Charge 3.0 and 2.0 standards. Pair with iW1782 or iW1780H primary-side controllers to leverage integrated optocoupler driving capabilities. Consider the SmartDefender feature for enhanced protection against cable and connector faults in compact adapter designs.

Power Supply Controllers, Monitors Part Context

The iW636-21 belongs to the iW636 series of switching controllers within Renesas' PMIC portfolio. It is specifically engineered for secondary-side control in fast-charging applications. The series supports efficient power management through direct communication with designated primary-side digital controllers, optimizing performance for modern mobile device charging needs.

Power Supply Controllers, Monitors Replacement Considerations

Check for other members of the iW636 family, such as iW636-07 or iW636-02, which share similar functional descriptions and protocol support. Verify pinout compatibility and specific ordering suffix differences if substituting within the same series.