Features
- Supports Qualcomm Quick Charge 3.0 technology High Voltage Dedicated Charging Port (HVDCP) to provide VBUS from 3.6V to 12V in 200mV increments
- Double-layer cable protection:
- Secondary side (iW636): Proprietary D+/D- overvoltage protection (OVP) addresses VBUS D+/Dsoft shorts
- Primary side (iW1782 or iW1780H): SmartDefender™ smart hiccup technology reduces average output power at fault conditions without latch
- Proprietary secondary-to-primary digital communication eliminates discrete decoders in the primary side and simplifies system designs
- Single optocoupler transmits all information for rapid charge: Output voltage requests, output current limits, output voltage undershoot (UV), overvoltage protection (OVP), and fault and reset signals
- Adaptive OVP/UV detection for most VBUS levels
- Backward compatible with QC2.0 and USB Battery Charging Specification Revision 1.2 (USB BC1.2)
- Pin-to-pin compatible with iW626
- Programmable active fast discharge from a high voltage VBUS level to 5V at mobile device unplug or upon request with built-in switch or external switch
- Normally OFF state with <150µA cut-off current during 5V steady-state operation to achieve <10mW overall system no-load power consumption
- Wide operating voltage range from 3V to 16V
- Built-in optocoupler LED driver with a minimum driving current of 2mA
iW636 Functional Block Diagram
Description
The iW636 is a Rapid Charge™ secondary-side controller for USB interface supporting Qualcomm® Quick Charge™ 3.0 (QC3.0) technology and secondary-to-primary communication protocol, that works with the iW1782 or iW1780H primary-side AC/DC digital controller to enable rapid charging of QC3.0/QC2.0-enabled mobile devices.
The iW636 integrates an optocoupler driver that relays commands to the iW1782 or iW1780H AC/DC controllers. These chipsets provide efficiency as high as 90% to enable the higher power density needed for small form factor fast charging adapters. It also uses Renesas' SmartDefender™ smart hiccup technology to help address soft shorts in cables and connectors.
Qualcomm Quick Charge is a product of Qualcomm Technologies, Inc.
Parameters
| Attributes | Value |
|---|---|
| Function | RapidCharge™ Protocol IC |
| Supported Protocols | QC2.0, QC3.0 |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| SOT23-6L | 0.118 x 0.118 x 0.0512 | 6 | 0.95 |
Application Block Diagrams
 | Multi-Cell USB PD Power Bank with Quick Charge 2.0/3.0 60W+ USB PD power bank offers efficient charging with multi-cell setup and Bluetooth LE monitoring. |
Additional Applications
- Rapid charging AC/DC adapters for smart phones, tablets and other portable devices
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