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Microchip Technology UCS1001-2-BP-TR
- Part No.:
- UCS1001-2-BP-TR
- Manufacturer:
- Microchip Technology
- Category:
- Power Management - Specialized
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
UCS1001-2-BP-TR.pdf
- Description:
- IC USB PORT POWER CTRLR 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,650
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Product details
Overview
UCS1001-2-BP-TR from Microchip (formerly SMSC) is a USB port power controller with integrated charger emulation and wake-on-attach detection. It delivers up to 2.5 A continuous current via a 55 mΩ on-resistance power switch, supports BC1.2 CDP/DCP, Apple®, and YD/T-1591 charging protocols, and features ultra-low-power Detect state operation for battery-powered systems like notebooks and docking stations.
For engineers reviewing the UCS1001-2-BP-TR datasheet, UCS1001-2-BP-TR pinout, UCS1001-2-BP-TR application, or UCS1001-2-BP-TR equivalent, this device enables reliable USB port power control, automatic peripheral attachment detection, and multi-standard charger emulation without host intervention - critical for sleep-state wake-up and embedded USB charging subsystems.
Technical Context
The UCS1001-2-BP-TR operates in four distinct power states: Off, Sleep, Detect, and Active. In Detect state, it monitors VBUS for portable device attachment using low-current sensing (<10 µA quiescent), triggering A_DET# assertion to wake the system. Its dual-supply architecture (VS for power path, VDD for logic) enables standby operation while maintaining USB enumeration readiness.
Charger emulation is implemented via nine preloaded profiles applied across DPOUT/DMOUT pins, supporting signature-based (e.g., Legacy Apple) and handshake-based (e.g., BC1.2 CDP) modes. The USB 2.0 high-speed data switch remains active only in Pass-through and CDP modes, ensuring signal integrity compliance (eye diagram verified per USB-IF spec) while isolating data lines during DCP/DCE operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Continuous Current Rating | 2.5 A - supports full USB BC1.2 DCP/CDP loads without external current-sense resistors |
| Power Switch RDS(on) | 55 mΩ - minimizes voltage drop and thermal dissipation at 2.5 A (≤137.5 mW conduction loss) |
| Operating Voltage Range | 2.9 V to 5.5 V on VS - compatible with USB VBUS, battery-backed rails, and wide-input AC-DC adapters |
| Detect-State Quiescent Current | <10 µA - enables long-term attachment monitoring in notebook sleep mode without battery drain |
| Charging Protocol Coverage | USB-IF BC1.2 CDP/SDP/DCP, YD/T-1591 (2009), Apple® 1/2/3, RIM - nine preloaded profiles ensure broad legacy device compatibility |
| ESD Immunity | IEC61000-4-2 ±8 kV contact / ±15 kV air - meets industrial-grade USB port surge requirements |
| Temperature Range | –40 °C to +85 °C - qualified for extended-temperature operation in laptops, docks, and monitors |
Pinout & Package
UCS1001-2-BP-TR is housed in a 20-pin QFN package (4 mm × 4 mm, 0.5 mm pitch) with exposed thermal pad. Pin numbering follows standard QFN layout; GND FLAG pin (Pin 16) provides dedicated ground reference for noise-sensitive analog circuits.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A_DET# (Pin 16) | Open-drain attach detection output | Asserts low when portable device insertion is confirmed in Detect state - directly interfaces with SoC wake-interrupt inputs |
| VBUS1/VBUS2 (Pins 3,4) | Power switch output terminals | Must be tied together externally; deliver switched 5 V to downstream USB port with ≤55 mΩ path resistance |
| VS1/VS2 (Pins 11,20) | Main power input for switch FET | Accepts 2.9–5.5 V source; powers internal high-side switch and current-limit circuitry |
| VDD (Pin 12) | Digital logic supply | Independent 2.9–5.5 V rail enables split-supply operation - allows logic to remain active while VS is off or in low-power mode |
| DPOUT/DMOUT (Pins 8,13) | Charger emulation signaling outputs | Drive USB data lines with programmable voltage signatures (e.g., DCP short, CDP voltage dividers) to emulate specific chargers |
| ALERT# (Pin 15) | Fault reporting output | Open-drain alert for over-current, over-temperature, UVLO/OVLO, or back-drive events - requires external pull-up |
| PWR_EN (Pin 14) | Active-high or active-low enable input | Polarity selected by SEL pin; controls power switch gate drive - enables system-level sequencing and fault recovery |
Key Features
| Feature | Design Value |
|---|---|
| Wake-on-Attach Detection | Sub-10 µA Detect-state current enables persistent USB port monitoring during system sleep - eliminates need for host polling or auxiliary sensors |
| Dynamic Thermal Management | Automatic reduction of current limit and switching frequency when die temperature approaches regulation threshold - prevents thermal shutdown during sustained 2.5 A loads |
| Back-Drive & Back-Voltage Protection | Prevents reverse current flow from VBUS into VS or VDD rails during hot-plug or adapter removal - protects upstream power sources and system stability |
| Selectable Fault Recovery | Latch or auto-recovery mode configurable via LATCH pin - supports safety-critical latched shutdown or self-healing behavior for consumer applications |
| BC1.2 VBUS Discharge Function | Actively discharges VBUS to <1 V within 1 s after fault or disable - ensures clean renegotiation and compliance with USB-IF port reset timing |
Applications
| Notebook Power Management | USB Docking Station |
|---|---|
Use Scenario: Notebook in S3/S4 sleep state detects smartphone insertion via USB-C or Type-A port. IC Role / Device Role / Timing Role: UCS1001-2-BP-TR operates in Detect state, asserts A_DET# within 100 ms of VBUS rise, waking CPU via interrupt. Use Value: Enables zero-power attachment wake-up without host firmware involvement or external microcontroller. |
Use Scenario: Docking station supplies power and data to multiple peripherals including tablets and phones. IC Role / Device Role / Timing Role: Manages individual port power switching, applies correct BC1.2 profile per attached device, and isolates faults to prevent system-wide shutdown. Use Value: Eliminates need for discrete charge controllers per port - reduces BOM count and PCB area by 60% vs. discrete solutions. |
| AC-DC Wall Adapter Hub | Industrial Monitor USB Port |
Use Scenario: Multi-port wall adapter delivers fast charging to diverse devices (iPhone, Android, Bluetooth earbuds). IC Role / Device Role / Timing Role: Emulates DCP, CDP, and Apple® signatures dynamically; cycles through nine profiles until handshake succeeds. Use Value: Achieves >98% charging compatibility across 200+ legacy and modern USB devices without firmware updates. |
Use Scenario: Industrial monitor with front-panel USB ports used for service diagnostics and firmware updates. IC Role / Device Role / Timing Role: Provides over-current protection, UVLO/OVLO lockout, and ESD-hardened interface - maintains port reliability in electrically noisy factory environments. Use Value: Meets IEC61000-4-2 Level 4 immunity (±15 kV air) - eliminates field failures due to operator ESD events. |
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 |
|---|---|---|---|
| TUSB246IRHBR | Single-chip USB Type-C PD sink controller; lacks native BC1.2 DCP/CDP emulation and A_DET# wake output | Requires external MCU for legacy charger support; no low-power Detect state for wake-on-attach | Choose for Type-C PD-only designs where BC1.2 backward compatibility is not required |
| TPS2546RTER | USB 2.0 charging detector with integrated 2.5 A switch; supports BC1.2 but only 3 fixed profiles (no Apple/RIM) | No A_DET# output; relies on host polling or GPIO monitoring for attachment detection | Choose when cost sensitivity outweighs need for broad legacy charging coverage and autonomous wake capability |
Compared with TUSB246IRHBR and TPS2546RTER, UCS1001-2-BP-TR uniquely combines ultra-low-power wake-on-attach, nine-profile charger emulation, and BC1.2-compliant data switching - making it the only single-chip solution for legacy-aware, sleep-optimized USB charging in notebooks and docks.
Availability
UCS1001-2-BP-TR is available at Aetrix Electronics and suitable for notebook computers, USB docking stations, and AC-DC wall adapters requiring stable component supply, long-lifecycle support, and guaranteed RoHS-compliant manufacturing.
Supply support for UCS1001-2-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
Microchip Technology acquired SMSC in 2012 and maintains full support for the UCS1001 family. Microchip is a global leader in microcontrollers, analog, and connectivity solutions, with emphasis on embedded control and power management.
The UCS1001 product line was designed specifically for USB host-side power control and intelligent charging in portable computing and peripheral systems - addressing the need for autonomous, standards-compliant, low-power port management without host CPU involvement.
FAQ
What is the primary function of the A_DET# pin on the UCS1001-2-BP-TR?
The A_DET# pin on the UCS1001-2-BP-TR is an open-drain output that asserts low when a portable device is detected on the USB port during Detect state operation. It enables system wake-up from S3/S4 sleep without host polling, consuming less than 10 µA in standby - a core differentiator from the UCS1001-1-BP-TR, which uses CHRG# instead.
How does the UCS1001-2-BP-TR handle USB charger protocol negotiation?
The UCS1001-2-BP-TR implements nine preloaded charger emulation profiles applied to DPOUT/DMOUT pins, covering USB-IF BC1.2 CDP/DCP, YD/T-1591, Apple® (1/2/3), and RIM protocols. It automatically cycles through profiles until handshake success or defaults to constant-current DCP mode - all without host software intervention.
Can the UCS1001-2-BP-TR operate with separate VS and VDD supplies?
Yes - the UCS1001-2-BP-TR supports split-supply operation: VS (Pins 11,20) powers the high-side switch and current-limit circuitry (2.9–5.5 V), while VDD (Pin 12) powers digital logic (also 2.9–5.5 V). This enables ultra-low-power Detect state operation even when VS is unpowered, a key feature for battery-backed systems.
What protection features does the UCS1001-2-BP-TR include beyond over-current limiting?
In addition to over-current limit (OCL), the UCS1001-2-BP-TR integrates under-voltage lockout (UVLO) and over-voltage lockout (OVLO) on VS, back-drive current protection, back-voltage detection, dynamic thermal management, and IEC61000-4-2 ±15 kV air-gap ESD immunity - providing comprehensive fault resilience for unattended USB ports.
Is the UCS1001-2-BP-TR pin-compatible with the UCS1001-1-BP-TR?
No - while both share the same 20-pin QFN package and most signal pins, UCS1001-2-BP-TR substitutes A_DET# (Pin 16) for CHRG# (Pin 16 on UCS1001-1-BP-TR). This functional difference requires PCB layout revision; they are not drop-in replacements despite identical footprints and thermal characteristics.
UCS1001-2-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)
UCS1001-2-BP-TR FAQ
1.How can I place an order for UCS1001-2-BP-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for UCS1001-2-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 UCS1001-2-BP-TR reliable?
The price and inventory of UCS1001-2-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 UCS1001-2-BP-TR is usually 5 days.
3.What payment methods are accepted for UCS1001-2-BP-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCS1001-2-BP-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCS1001-2-BP-TR?
UCS1001-2-BP-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCS1001-2-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 UCS1001-2-BP-TR?
For technical support, including UCS1001-2-BP-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCS1001-2-BP-TR requirements.
6.How does Aetrix verify that UCS1001-2-BP-TR is sourced from the original manufacturer or authorized distributors?
All UCS1001-2-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 UCS1001-2-BP-TR meets industry standards.
7.What is the process for return or replacement of UCS1001-2-BP-TR?
All UCS1001-2-BP-TR units undergo pre-shipment inspection (PSI). If there is an issue with UCS1001-2-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 UCS1001-2-BP-TR part is unused and in its original packaging.
Return procedure for UCS1001-2-BP-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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