MAX14640–MAX14644/MAX14651
USB Host Adapter Emulators
General Description
Benefits and Features
● Improved Charger Interoperability
The MAX14640–MAX14644/MAX14651 are next-generation
USB 2.0 host charger adapter emulators that combine
USB Hi-Speed analog switches with a USB adapter
emulator circuit.
• USB (CDP) Emulation
• Smart CDP
• Foolproof CDP
• Meets New USB Battery Charging (BC) Revision
1.2 Specification
2
The MAX14640/MAX14651 feature an I C interface to fully
configure the charging behavior with different address
options. The MAX14641–MAX14644 are controlled by
two GPIO inputs (CB1/CB0) and support USB data and
automatic charger mode. In charging downstream port
(CDP) pass-through mode, the devices emulate the
CDP function while supporting normal USB traffic. The
MAX14641/MAX14642/MAX14643 have a CEN output
for an active-high CLS enable input, and the MAX14644
has a CEN output for an active-low CLS enable input to
restart the peripheral connected to the USB host.
• Backward-Compatible with Previous USB BC Revisions
• Meets China YD/T1591-2009 Charging Specification
• Supports Standby-Mode Charging for Apple BC
Revision 1.2 Compatible Devices
● Provide Greater Application Flexibility
2
• I C Controls Multiple Modes (MAX14640/MAX14651)
• CB0 and CB1 Pins Control Multiple Automatic and
Manual Charger States
● Enhance Performance with High Level of Integrated Features
• Supports Remote Wakeup
The MAX14640–MAX14644/MAX14651 feature 2A high-
current autodetect mode. The MAX14641 features 1A
high-current forced mode instead of regular DCP mode.
The MAX14640/MAX14651 can be configured through I C
to support various dedicated charger modes such as DCP,
• Low-Capacitance USB 2.0 Hi-Speed Switch to
Change Charging Modes
• Automatic Current-Limit Switch Control
• ±15kV ESD Protection on DP/DM
2
®
● Minimize PCB Area
Apple 1A/2A forced, or Apple 1A/2A automatic mode.
• 2mm x 2mm, 8-Pin TDFN Package
All the devices 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 devices support low-speed
remote wake-up by monitoring DM, and the MAX14642
also supports remote wake-up in sleep mode (S3).
Applications
● Laptop/Desktop Computers
● USB Hubs
®
®/
®
● Universal Chargers Including iPod /iPhone iPad
The MAX14640–MAX14644/MAX14651 are available in an
8-pin (2mm x 2mm) TDFN-EP package and are specified
over the -40NC to +85NC extended temperature range.
Ordering Information and Typical Operating Circuit appear
at end of data sheet.
Selector Guide
PART
I/O MODE
CEN POLARITY
REMOTE WAKE-UP IN AM
FORCED CHARGER MODE
BIAS IN FM
DP/DM short
Apple 1A
2
MAX14640
MAX14641
MAX14642
MAX14643
MAX14644
MAX14651
I C (0x35)
N/A
CEN
CEN
CEN
CEN
N/A
Optional
No
Yes
No
GPIO
GPIO
GPIO
GPIO
Yes
Yes
Yes
Yes
Yes
DP/DM short
DP/DM short
DP/DM short
DP/DM short
No
No
2
I C (0x15)
Optional
Apple, iPad, iPod, and iPhone are registered trademarks of Apple, Inc.
19-6472; Rev 4; 9/16