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Microchip Technology UCS1002-2-BP-TR
- Part No.:
- UCS1002-2-BP-TR
- Manufacturer:
- Microchip Technology
- Category:
- Power Management - Specialized
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
UCS1002-2-BP-TR.pdf
- Description:
- IC USB PORT POWER CTRLR 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:24,896
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Product details
Overview
UCS1002-2-BP-TR from SMSC is a programmable USB port power controller with integrated charger emulation, designed for precise 2.5 A current switching, BC1.2/CDP/DCP/YD/T-1591/Apple/RIM protocol support, and ultra-low-power attach detection in notebook, tablet, and docking station applications.
For engineers reviewing the UCS1002-2-BP-TR datasheet, UCS1002-2-BP-TR pinout, UCS1002-2-BP-TR application, or UCS1002-2-BP-TR equivalent, this device delivers configurable current limiting, SMBus/I²C-controlled charger profile cycling, USB 2.0 high-speed data pass-through, dynamic thermal management, and split-supply standby operation - all in a 20-pin QFN 4 mm × 4 mm RoHS-compliant package.
Technical Context
The UCS1002-2-BP-TR implements a dual-domain power architecture with independent VS (VBUS input) and VDD (logic supply) rails, enabling wake-on-attach functionality from system sleep/off states. Its internal USB 2.0 HS data switch operates transparently in Pass-through and CDP modes, maintaining signal integrity up to 480 Mbps.
Charger emulation is executed via nine preloaded profiles plus one customizable stimulus-response sequence, supporting BC1.2 DCP/CDP handshaking, 12 W emulation, and active cable compatibility. Fault handling includes latch or auto-recovery modes with low-test-current recovery, and current monitoring enables real-time IBUS reporting via SMBus registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Continuous Current | 2.5 A - supports full USB charging loads without external current-sense resistors |
| On-Resistance | 55 mΩ - minimizes voltage drop and power loss at 2.5 A (≤137.5 mV drop) |
| Input Voltage Range | 2.9 V to 5.5 V - compatible with USB VBUS, battery-backed, or adapter-derived supplies |
| Operating Temp | −40 °C to +85 °C - qualified for industrial and mobile computing environments |
| ESD Immunity | IEC61000-4-2 ±8 kV contact / ±15 kV air - robust protection for exposed USB ports |
| Communication | SMBus 2.0 / I²C - supports block read/write, multiple addresses, and host-controlled profile selection |
| Package | 20-pin QFN 4 mm × 4 mm - surface-mount footprint with exposed thermal pad for thermal management |
Pinout & Package
UCS1002-2-BP-TR uses a 20-pin QFN 4 mm × 4 mm package with wettable flank leads and an exposed thermal pad (EP). Pin numbering follows standard QFN convention (pin 1 marked by dot; counterclockwise).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Logic Supply Input | Provides 1.7–5.5 V power for internal logic; decoupling required near pin |
| VS | Power Switch Input | High-side source for 2.9–5.5 V VBUS path; drives load via internal FET |
| PWR_EN | Active-High/Low Enable | Selectable polarity via COMM_SEL/ILIM pin; controls power switch gate drive |
| A_DET# | Open-Drain Attach Detect Output | Asserts low on USB device insertion; wakes host from sleep with ultra-low quiescent current |
| ALERT# | Open-Drain Fault Alert Output | Signals over-current, over-temperature, UVLO/OVLO, or back-drive events |
| DPIN / DMIN | USB 2.0 Data Input | Passes upstream DP/DM signals to downstream ports in Pass-through and CDP modes |
| DPOUT / DMOUT | USB 2.0 Data Output | Delivers emulated or pass-through DP/DM to attached peripheral; supports HS signaling |
| EM_EN | Emulation Enable Input | Hardware-selectable activation of charger emulation profiles (active-high) |
| M1 / M2 | Mode Selection Inputs | Set default active mode (SDP/CDP/DCP) and enable legacy emulation sequences |
| COMM_SEL / ILIM | Configuration Select / Current Limit | Configures SMBus address or sets fixed current limit threshold (via resistor divider) |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Charger Emulation | Nine preloaded + one custom profile enables reliable handshake with BC1.2, Apple, RIM, YD/T-1591, and future devices via unique stimulus-response method |
| Split-Supply Standby Operation | VS and VDD separation allows battery-powered systems to detect attachments while consuming <10 µA in Sleep state |
| USB 2.0 High-Speed Data Switch | Transparent DP/DM routing with <1.5 dB insertion loss at 240 MHz ensures full 480 Mbps compliance in Pass-through and CDP modes |
| Dynamic Thermal Management | Thermal foldback reduces current limit before junction temperature exceeds 125 °C, preventing shutdown during sustained 2.5 A loads |
| Battery Full Mode | Enables controlled current delivery in system off/sleep states while preventing excessive battery drain via charge rationing thresholds |
| Back-Drive & Back-Voltage Protection | Prevents reverse current flow from peripheral into host during fault conditions or hot-plug events |
Applications
| Notebook Power Delivery Hub | USB Docking Station Controller |
|---|---|
Use Scenario: Notebook PC provides USB-C or Type-A ports with fast charging and data passthrough while in sleep mode. IC Role / Device Role / Timing Role: UCS1002-2-BP-TR acts as intelligent VBUS switch and charger emulator, managing power delivery, attach detection, and protocol negotiation. Use Value: Enables wake-on-attach, supports 12 W charging for smartphones/tablets, and maintains USB 2.0 HS data integrity without host CPU involvement. |
Use Scenario: Docking station aggregates multiple peripherals and must negotiate optimal charging profiles per connected device. IC Role / Device Role / Timing Role: UCS1002-2-BP-TR serves as per-port power manager and BC1.2 profile sequencer across four downstream USB ports. Use Value: Eliminates need for discrete charger ID ICs; nine preloaded profiles + custom option ensure compatibility with legacy and emerging portable devices. |
| AC-DC Wall Adapter with Smart Charging | Industrial Tablet Charging Port |
Use Scenario: Compact wall adapter delivers up to 2.5 A to single-device loads while identifying and adapting to Apple, Samsung, or BC1.2-compliant devices. IC Role / Device Role / Timing Role: UCS1002-2-BP-TR replaces fixed-resistor D+/D− pull-up schemes with programmable emulation and real-time current monitoring. Use Value: Achieves UL/EN60950-1 certification with built-in OVLO/UVLO, back-drive protection, and ESD immunity - no external protection components required. |
Use Scenario: Ruggedized tablet charges from vehicle USB ports or field-deployed adapters under wide temperature and voltage variation. IC Role / Device Role / Timing Role: UCS1002-2-BP-TR functions as robust front-end power controller with −40 °C to +85 °C operation and latch-fault safety for unattended use. Use Value: Dynamic thermal management prevents derating in enclosed enclosures; Battery Full mode extends runtime when charging from weak sources. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB port power control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TUSB211IRWBR | Single-channel USB 2.0 redriver only; no power switching, no charger emulation, no current limiting | Used for signal integrity extension only - requires external power switch and BC1.2 IC | Choose TUSB211IRWBR only if signal boost is needed without power control or charging intelligence |
| TPS65987D | USB-C PD controller with integrated buck-boost; supports USB PD 3.0 but lacks BC1.2/Apple legacy emulation | Targets USB-C PD ecosystems; not suitable for legacy Type-A ports or non-PD chargers | Choose TPS65987D for USB-C PD designs requiring programmable voltage/current negotiation, not for BC1.2 backward compatibility |
Compared with TUSB211IRWBR and TPS65987D, the UCS1002-2-BP-TR uniquely combines USB 2.0 HS switching, 2.5 A programmable power control, and multi-protocol charger emulation in a single 20-pin QFN - making it irreplaceable for cost-sensitive, legacy-compatible Type-A USB charging hubs.
Availability
UCS1002-2-BP-TR is available at Aetrix Electronics and suitable for notebook computers, USB docking stations, AC-DC wall adapters, and industrial tablets requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for UCS1002-2-BP-TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
SMSC (Standard Microsystems Corporation), now part of Microchip Technology, specializes in connectivity, timing, and interface ICs for computing and communications infrastructure.
The UCS1002 product line was designed specifically for USB power delivery intelligence in resource-constrained mobile and embedded platforms - delivering charger emulation, attach detection, and thermal-aware current control without host processor overhead.
FAQ
What is the maximum continuous current rating of the UCS1002-2-BP-TR?
The UCS1002-2-BP-TR supports up to 2.5 A continuous current through its internal power switch. This rating is valid across the full operating temperature range (−40 °C to +85 °C) with proper PCB thermal design and airflow. The 55 mΩ on-resistance ensures minimal voltage drop and self-heating under load, and dynamic thermal management actively reduces current limit before junction temperature reaches 125 °C.
Does the UCS1002-2-BP-TR support USB Battery Charging Specification v1.2?
Yes, the UCS1002-2-BP-TR fully supports USB BC1.2, including Charging Downstream Port (CDP) and Dedicated Charging Port (DCP) detection and emulation modes. It also supports YD/T-1591 (2009), most Apple® and RIM® charging signatures, and provides nine preloaded profiles plus one customizable profile to cover evolving device requirements.
How does the UCS1002-2-BP-TR enable wake-on-attach functionality?
The UCS1002-2-BP-TR implements ultra-low-power attach detection using its A_DET# pin, which asserts open-drain low upon USB device insertion while drawing less than 10 µA from VDD in Sleep state. This signal can directly trigger a system wake interrupt, allowing notebooks and tablets to detect peripherals and resume operation without polling or host CPU activity.
Can the UCS1002-2-BP-TR operate with separate VS and VDD supplies?
Yes, the UCS1002-2-BP-TR supports split-supply operation: VS powers the high-side power switch (2.9–5.5 V), while VDD powers the logic core (1.7–5.5 V). This enables battery-operated systems to keep VDD active for attach detection while VS remains disconnected - reducing standby power and enabling true "off-state" charging readiness.
What communication interfaces does the UCS1002-2-BP-TR support?
The UCS1002-2-BP-TR supports SMBus 2.0 and I²C-compatible communication via SMDATA and SMCLK pins. It implements Block Write/Read protocols, supports multiple slave addresses (configurable via COMM_SEL/ILIM), and provides full register access to current measurement, status flags, emulation configuration, and fault logs - enabling host-based power policy control.
UCS1002-2-BP-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 20-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- USB Dedicated Charging Port (DCP), Power Switch
- Current - Supply:
- 650µA
- Voltage - Supply:
- 2.9V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QFN (4x4)
UCS1002-2-BP-TR FAQ
1.How can I place an order for UCS1002-2-BP-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for UCS1002-2-BP-TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for UCS1002-2-BP-TR reliable?
The price and inventory of UCS1002-2-BP-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCS1002-2-BP-TR is usually 5 days.
3.What payment methods are accepted for UCS1002-2-BP-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCS1002-2-BP-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCS1002-2-BP-TR?
UCS1002-2-BP-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCS1002-2-BP-TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for UCS1002-2-BP-TR?
For technical support, including UCS1002-2-BP-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCS1002-2-BP-TR requirements.
6.How does Aetrix verify that UCS1002-2-BP-TR is sourced from the original manufacturer or authorized distributors?
All UCS1002-2-BP-TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that UCS1002-2-BP-TR meets industry standards.
7.What is the process for return or replacement of UCS1002-2-BP-TR?
All UCS1002-2-BP-TR units undergo pre-shipment inspection (PSI). If there is an issue with UCS1002-2-BP-TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The UCS1002-2-BP-TR part is unused and in its original packaging.
Return procedure for UCS1002-2-BP-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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