Dual-Channel USB Host Adapter Emulators

The MAX14657/MAX14658/MAX14659 are next-generation dual-channel USB 2.0 host-charger adapter emulators that combine USB Hi-Speed analog switches with a USB adapter emulator circuit.

The MAX14657 features an I2C interface to fully configure the charging behavior with different address options. The MAX14658/MAX14659 are controlled by two GPIO inputs (CB1/CB0) and support USB data and automatic charger mode. In charging downstream port (CDP) mode, the devices emulate the CDP function while supporting normal USB traffic. The MAX14657/MAX14658 have a CEN output for an active-high CLS enable input, and the MAX14659 has an active-low CEN output for an active-low CLS enable input to restart the peripheral connected to the USB host.

The MAX14658/MAX14659 feature 2A high-current autodetect mode. The MAX14657 can be configured through I2C to support various dedicated charger modes such as Apple 1A/2A forced, or Apple or Samsung 1A/2A autodetect modes.

The MAX14657/MAX14658/MAX14659 support CDP and standard downstream port (SDP) charging while in the active state (S0), and support the dedicated charging port (DCP) charging while in the standby state (S3/S4/S5). All of the devices support low-speed remote wake-up by monitoring DM, and also support remote wakeup in sleep mode (S3).

The MAX14657/MAX14658/MAX14659 are available in a 16-pin (3mm x 3mm) TQFN-EP package and are specified over the -40°C to +85°C extended temperature range. Applications

* Laptop/Desktop Computers * Universal Chargers Including iPod®/iPhone®/iPad® * USB Hubs

* Integrated Dual Channels

* More Convenient, High-Current USB Charging Ports for Users

* Simple and Flexible Power-Management Control

* Small TQFN Package Minimizes PCB Area

* Improved Charger Interoperability

* USB (CDP) Emulation with Smart CDP and Fool-Proof CDP

* Enhanced Automodes

* Foolproof CDP

* Meets New USB Battery Charging (BC) Revision 1.2 Specification

* Backward Compatible with Previous USB BC Revisions

* Meets China YD/T1591-2009 Charging Specification

* Supports Standby-Mode Charging for USB BC Revision 1.2 Compatible Devices

* Provide Greater Application Flexibility

* I2C Controls Multiple Modes (MAX14657)

* A Slave Address Selection Input Offers Two Possible Slave Addresses for Each Emulator (MAX14657)

* CB0 and CB1 Pins Control Multiple Automatic and Manual Charger States (MAX14658, MAX14659)

* Enhance Performance with High Level of Integrated Features

* Supports Remote Wake-Up

* Low-Capacitance USB 2.0 Hi-Speed Switch to Change Charging Modes

* Automatic Current-Limit Switch Control

* ±15kV ESD Protection on DP/DM