UCS81003AM-C1A Microchip

UCS81003 Automotive USB Port Power Controller with Charger Emulation Features General Description Port Power Switch with Two Current Limit Behaviors The UCS81003 provides a USB port power switch for - 2.9V to 5.5V Source Voltage Range precise control of up to 3.0A continuous current - Up to 3.0A Current (2.85A typical) with (2.85A typical) with Overcurrent Limit (OCL), dynamic 55 m on Resistance thermal management, latch or auto-recovery (low-test - Overcurrent Trip or Constant Current Limiting current) fault handling, selectable active-low or active- - Soft Turn-On Circuitry high enable, undervoltage and overvoltage lockout, - Programmable Current Limit back-drive protection and back-voltage protection. - Dynamic Thermal Management Split supply support for V and V is an option for low S DD - Undervoltage and Overvoltage Lockout power in system standby states. This gives battery- - Back-Drive, Back-Voltage Protection operated applications (such as on-board computers) - Latch or Auto-Recovery (Low Test Current) the ability to detect attachments from a Sleep or OFF Fault Handling state. After the Attach Detection is flagged, the system - Selectable Active-High or Active-Low Power can decide to wake-up or provide charging, or both. Switch Enable - BC1.2 V Discharge Port Renegotiation In addition to Power Switching and Current Limiting BUS Function modes, the UCS81003 automatically charges a wide variety of portable devices, including USB-IF BC1.2, Selectable/Automatic Cycling of Universal Serial YD/T-1591 (2009), most Apple Inc. and RIM, and many Bus (USB) Data Line Charger Emulation Profiles others. Nine preloaded charger emulation profiles - USB-IF BC1.2 Charging Downstream Port maximize the compatibility coverage of the peripheral (CDP) and Dedicated Charging Port (DCP) devices. Additionally, a customizable charger modes, Chinese Telecommunications Industry emulation profile is available to accommodate unique Standard YD/T 1591-2009 and most Apple existing and future portable device Inc. and RIM Protocols Standard others as 2 handshaking/signature requirements. defined via the SMBus 2.0/I C Protocol - Supports 12W Charging Emulation The UCS81003 also provides current monitoring to - USB 2.0 Compliant High-Speed Data Switch enable intelligent management of system power and (in Data Pass-Through, SDP and CDP modes) charge rationing for controlled delivery of current, - Nine Preloaded Charger Emulation Profiles regardless of the host power state. This is especially for Maximum Compatibility Coverage of the important for battery-operated applications to provide Peripheral Devices power and not to excessively drain the battery. - One Custom-Programmable Charger The UCS81003 is available in a 5 mm x 5 mm Emulation Profile for Portable Device Support 28-pin VQFN package. for Fully Host-Controlled Charger Emulation Supports Active Cables Applications Self-Contained Current Monitoring and Rationing DC Power Socket Replacement for Power-Allocation Applications Consumer USB Port Protection Low-Power Attach Detection and Open-Drain (A DET ) Pin Consumer Device Charging Port Ultra Low-Power Sleep State Auxiliary Box Charging Feature Optional Split Supply Support for V and V for Rear Seat Entertainment Consumer Access Point S DD Low-Power in System Standby States Wake on Attach USB 2 C Communications SMBus 2.0/I - Supports Block Write and Read - Multiple SMBus Addresses Wide Operating Temperature Range: -40C to +85C IEC61000-4-2 8/15 kV Electrostatic Discharge (ESD) Immunity 2014-2018 Microchip Technology Inc. DS20005334B-page 1UCS81003 Package Type UCS81003 5x5VQFN* 1 21 NC NC 2 20 M1 D MIN 3 19 M2 D PIN 4 18 V ALERT BUS 5 17 V SMCLK/S0 BUS2 6 16 V SMDATA/LATCH BUS3 EP-29 715 COMM SEL/I NC LIM * Includes Exposed Thermal Pad (EP) see Table 3-1. DS20005334B-page 2 2014-2018 Microchip Technology Inc. SEL 8 28 NC V 9 27 GND S1 10 V EM EN 26 S2 V 11 25 A DET S3 12 D V 24 POUT DD 13 PWR EN 23 D MOUT 14 22 NC NC