Microchip UCS1003-2-BP, Dual USB Power Control, 55mΩ, 2.9 V min. 20-Pin, QFN

  • RS Stock No. 165-4209
  • Mfr. Part No. UCS1003-2-BP
  • Manufacturer Microchip
Product overview and Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): TH
Product Details

UCS1003-1/2/3 USB Port Power Contoller with Charger Emulation

The UCS1003 family of devices from Microchip is a range USB Port Power Switches that offer precise power control. These devices offer the option of split supply support for VS and VDD for low power in system standby states.

In battery operated applications the device can detect attachments from a Sleep or an Off state. After the Attach Detection is flagged, the system can decide to wake-up and/or provide charging. Included is the capability to automatically charge a wide range of portable/peripheral devices; nine emulation profiles maximise the compatibility coverage offered.


Port Power Switch with Two Current Limit Behaviours
2.9V to 5.5V Source Voltage Range
Up to 3.0A Current (2.85A typical) with 55mΩ On Resistance
Over-Current Trip or Constant Current Limiting
Soft Turn-On Circuitry
Selectable Current Limit
Dynamic Thermal Management
Under-Voltage and Over-Voltage Lockout
Back-Drive, Back-Voltage Protection
Latch or Auto-Recovery (Low-Test Current) Fault Handling
Selectable Active-High or Active-Low Power Switch Enable
BC 1.2VBUS Discharge Port Renegotiation Function
Selectable/Automatic Cycling of USB Data Line Charger Emulation Profiles
USB-IF BC1.2 Charging Downstream Port (CDP) and Dedicated Charging Port (DCP) modes, Chinese Telecommunications Industry Standard YD/T 1591-2009 and most Apple® Inc., Samsung and RIM® Protocols
Supports 12W Charging Emulation
USB 2.0 Compliant High-Speed Data Switch (in Data Pass-Through, SDP and CDP modes)
Nine Preloaded Charger Emulation Profiles for Maximum Compatibility Coverage of the Peripheral Devices
Supports Active Cables
Ultra-Low Power Sleep State
Optional Split Supply Support for VS and VDD for Low Power in System Standby States

Typical Applications

Notebook/Laptop Computers
Tablets and E-book Readers
Desktops and Monitors
Docking Stations
AC/DC Wall Adapter

USB Power Switch ICs, Microchip

Attribute Value
Number of Outputs 2
Switch On Resistance 55mΩ
Maximum Power Dissipation 2.19 W
Mounting Type Surface Mount
Package Type QFN
Pin Count 20
Current Limit 3000mA
Dimensions 4.1 x 4.1 x 0.9mm
Length 4.1mm
Width 4.1mm
Height 0.9mm
Maximum Input Voltage 5.5 V
Maximum Operating Temperature +125 °C
Minimum Input Voltage 2.9 V
Minimum Operating Temperature -40 °C
On back order for despatch 16/11/2020, delivery within 3 working days
Price Each (In a Tray of 490)
HK$ 11.70
(exc. GST)
Per unit
Per Tray*
490 +
*price indicative
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