The MAX3353E I²C-compatible USB On-the-Go (OTG) regulated charge pump with switchable pullup/pulldown resistors allows peripherals and mobile devices such as PDAs, cellular phones, and digital cameras to be interconnected without a host PC.The MAX3353E enables a system with an integrated USB dual-role transceiver to function as a USB OTG dual-role device. The charge pump in the MAX3353E supplies VBUSpower and signaling that is required by the transceiver as defined inOn-the-Go Supplement: USB 2.0, Revision 1.0. The MAX3353E provides the switchable pullup and pulldown resistors on D+ and D-required for a dual-role device.The MAX3353E integrates a regulated charge pump, switchable pullup/pulldown resistors, and an I²C-compatible 2-wire serial interface. The device provides a detector to monitor ID status and operates with logic supply voltages (VL) between +1.65V and VCCand charge-pump supply voltages (VCC) from +2.6V to +5.5V. The charge pump supplies an OTG-compatible output on VBUSwhile sourcing 8mA output current.The MAX3353E enables USB OTG communication between digital logic parts that cannot supply or tolerate the +5V VBUSlevels that USB OTG requires. By controlling and measuring VBUSusing internal comparators, this device supports USB OTG session request protocol (SRP) and host negotiation protocol (HNP).The MAX3353E has built-in ±15kV ESD protection circuitry to guard VBUS, ID_IN, D+, and D-. The MAX3353E is available in a 5 x 4 chip-scale package (UCSP™) and 16-pin TSSOP package.ApplicationsDigital CamerasMobile PhonesMP3 PlayersPDAsPhoto Printers