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Texas Instruments TPS2224ADBR
- Part No.:
- TPS2224ADBR
- Manufacturer:
- Texas Instruments
- Package:
- 24-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
TPS2224ADBR.pdf
- Description:
- IC PWR SWITCH 3:4 24SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,064
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Product details
Overview
TPS2224ADBR from Texas Instruments is a dual-slot CardBus™ power-interface switch IC designed to manage 3.3 V, 5 V, and 12 V distribution to two PC Card sockets. It integrates independent VCC/VPP switching, fast current-limit response (3 µs for 12 V), thermal shutdown (135 °C), and break-before-make sequencing. Used in notebook computers and CableCARD™ host systems requiring compliant PC Card power control.
For engineers reviewing the TPS2224ADBR datasheet, TPS2224ADBR pinout, TPS2224ADBR application, or TPS2224ADBR equivalent, this page delivers verified electrical specs, terminal functions, dual-slot power sequencing behavior, and real-world design constraints including UVLO thresholds, rDS(on) vs. temperature, and OC reporting timing.
Technical Context
The TPS2224ADBR implements two independent high-side power switches per slot - one for VCC (3.3 V/5 V) and one for VPP (3.3 V/5 V/12 V) - with separate discharge paths and internal current sensing. Its serial interface (CLOCK/DATA/LATCH) configures output states without external logic, while RESET and SHDN provide asynchronous hardware control.
It features integrated UVLO on all input rails (3.3 V, 5 V, 12 V), POR-driven internal reset, and thermal trip with 10 °C hysteresis. The device meets PC Card Standard requirements for voltage regulation, short-circuit response, and power-up sequencing - specifically supporting S-CARD and M-CARD modes in CableCARD™ applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range (3.3 V rail) | 3 V to 3.6 V - required for all circuit operation; below 2.7 V triggers UVLO and forces Hi-Z outputs |
| rDS(on) (5 V → xVCC) | 110 mΩ typical at TJ = 25°C - limits voltage drop to ≤825 mV at 750 mA load |
| rDS(on) (12 V → xVPP) | 2.5 Ω typical at TJ = 25°C - supports 50 mA max steady-state VPP load per slot |
| Current-limit response time | 3 µs for 12 V xVPP short - enables rapid fault isolation before thermal damage occurs |
| Quiescent current (3.3 V) | 140 µA typical - enables low-power standby in battery-operated notebooks |
| Operating junction temp | –40 °C to 100 °C - validated for industrial-temperature embedded CardBus host designs |
| Output discharge resistance | 0.4 kΩ typical at xVPP - ensures safe card hot-swap discharge within 1 ms under 10 µF load |
Pinout & Package
TPS2224ADBR is packaged in a 24-pin HTSSOP (DB package), thermally enhanced with exposed pad, footprint-compatible with JEDEC MO-153. Pin 1 is located at top-left corner when notch faces up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 24 | 5V input | Primary 5-V supply for both slots; must be ≥3 V to enable 5-V outputs |
| 3 | DATA input | Serial command data line; LSB-first 11-bit word controls AVCC/BVCC/AVPP/BVPP states |
| 4 | CLOCK input | Positive-edge clock for serial data; max 2.5 MHz; synchronizes LATCH sampling |
| 5 | LATCH input | Active-high latch signal; loads DATA bits into control register on rising edge |
| 7, 20 | 12V input | Dual 12-V inputs - externally tied - supply VPP for flash programming; not used in TPS2223A |
| 8 | AVPP output | Switched 3.3/5/12-V output for Slot A VPP; open-drain discharge path active during disable |
| 9, 10 | AVCC output | Switched 3.3/5-V output for Slot A VCC; supports up to 750 mA per rail |
| 11 | GND | Power ground reference for all switches and logic; connects to exposed thermal pad |
| 12 | RESET input | Asynchronous active-low reset; internal pullup; forces all outputs Hi-Z and discharges VCC/VPP |
| 13, 14 | 3.3V input | Core logic and 3.3-V output supply; mandatory for operation; UVLO threshold = 2.7 V |
| 15 | OC output | Open-drain overcurrent flag; sinks 10 mA; pulled low during xVCC/xVPP short or thermal trip |
| 17, 18 | BVCC output | Switched 3.3/5-V output for Slot B VCC; identical rating and timing to AVCC |
| 19 | BVPP output | Switched 3.3/5/12-V output for Slot B VPP; shares same 12-V input pins (7, 20) as AVPP |
| 21 | SHDN input | Asynchronous active-low shutdown; internal pullup; disables all switches and reduces IQ to 0.3 µA |
Key Features
| Feature | Design Value |
|---|---|
| Independent VPP/VCC switching | Enables mixed-voltage card insertion (e.g., 3.3-V card in Slot A, 5-V card in Slot B) without cross-rail interference |
| Break-before-make sequencing | Guarantees >100 ns dead time between old and new output states - prevents shoot-through during reconfiguration |
| UVLO on all input rails | Prevents partial power-up: 3.3-V UVLO (2.7 V) blocks logic; 5-V/12-V UVLO (2.5 V / 7 V) disable respective outputs only |
| Integrated discharge paths | 0.4 kΩ discharge resistance at xVPP and 0.7 kΩ at xVCC ensure <1 ms safe discharge of 10 µF card capacitance |
| Serial configuration interface | 11-bit command word (D0–D10) allows full per-slot VCC/VPP state control via 3-pin SPI-like bus - no external decode logic needed |
Applications
| CableCARD™ Host Systems | Notebook Computer CardBus Slots |
|---|---|
Use Scenario: CableCARD™ module insertion into set-top box or digital TV requires compliant 3.3 V/5 V/12 V power sequencing and hot-swap safety. IC Role / Device Role / Timing Role: Dual-slot power manager controlling AVCC/BVCC and AVPP/BVPP independently per PCMCIA spec. Use Value: Meets CableLabs® CableCARD™ power interface requirements, including 3 µs overcurrent response and UVLO-triggered Hi-Z on brownout. |
Use Scenario: Notebook expansion bay supporting simultaneous use of modem + wireless LAN PC Cards. IC Role / Device Role / Timing Role: Dual-channel high-side switch with per-rail current limiting and thermal protection. Use Value: Eliminates discrete fuses and discrete MOSFET drivers; reduces BOM count by 12+ components per slot. |
| Digital Camera PC Card Readers | Industrial Embedded PCMCIA Hosts |
Use Scenario: Portable digital camera with built-in CompactFlash/PC Card reader for direct image transfer. IC Role / Device Role / Timing Role: Power sequencer enabling safe hot-plug detection and controlled VCC/VPP ramp-up per card type. Use Value: Supports both 3.3-V CF Type II and 5-V ATA cards using single IC; avoids manual voltage selection jumpers. |
Use Scenario: Ruggedized industrial computer with dual PC Card slots for field-replaceable I/O modules. IC Role / Device Role / Timing Role: Fault-tolerant power controller with OC reporting, thermal shutdown, and -40°C to 85°C ambient rating. Use Value: Enables unattended operation in harsh environments; OC signal feeds PLC fault log for predictive maintenance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-slot CardBus power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2226APWP | 30-pin SSOP package; adds third VCC output (pin 11) and extra NC pins; identical electrical specs and timing | Used where board layout requires wider pitch or higher thermal mass; not pin-compatible with DB package | Select when PCB stack-up or thermal dissipation demands larger package; same firmware and schematic logic apply |
| TPS2224APWP | Same functionality and specs as TPS2224ADBR but in 24-pin SSOP (PWP) package; no exposed thermal pad | Preferred for cost-sensitive consumer designs where HTSSOP thermal performance is unnecessary | Choose for lower assembly cost if junction temp stays <85°C; verify derating per Dissipation Rating Table (3322 mW vs 890 mW) |
Compared with TPS2224ADBR, the PWP variants offer identical feature sets but trade thermal performance (HTSSOP's exposed pad enables 3.7× higher power rating) for lower assembly cost and compatibility with legacy SSOP footprints.
Availability
TPS2224ADBR is available at Aetrix Electronics and suitable for notebook computers, CableCARD™ hosts, and industrial PCMCIA systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TPS2224ADBR 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of experience in power management and interface solutions.
The TPS222x family was engineered specifically for PC Card and CardBus host systems, delivering fully integrated, standards-compliant power switching with minimal external components and robust fault handling.
FAQ
What is the maximum continuous output current supported by TPS2224ADBR on its 5-V xVCC outputs?
The TPS2224ADBR supports 750 mA per 5-V xVCC output (AVCC and BVCC) at TJ = 25°C, derating to 1 A maximum at TJ = 100°C per the Recommended Operating Conditions table. This rating satisfies PC Card Standard peak current requirements for dual-slot operation without external current boosting.
Does TPS2224ADBR support 12-V output on both AVPP and BVPP simultaneously?
Yes - TPS2224ADBR supports 12-V output on both AVPP (pin 8) and BVPP (pin 19) when 12 V is applied to pins 7 and 20 (which must be externally connected). Unlike TPS2223A, the TPS2224ADBR fully implements dual 12-V VPP capability per the functional block diagram and Terminal Functions table.
How does the OC pin of TPS2224ADBR behave during overcurrent events?
The OC pin of TPS2224ADBR is an open-drain output that pulls low (≤0.4 V at 2 mA sink) during overcurrent or thermal shutdown. It remains asserted until the fault clears and the device exits shutdown - no auto-retry. An external pullup resistor (typically 10 kΩ to 3.3 V) is required for proper logic-level signaling to the host processor.
Can TPS2224ADBR be used in single-slot applications, and how is it configured?
Yes - TPS2224ADBR can operate in single-slot mode by configuring the serial interface to enable only AVCC/AVPP (or only BVCC/BVPP) while holding the unused slot outputs in Hi-Z. Its pinout and control logic fully support asymmetric slot usage, unlike the single-slot-only TPS2220A.
What is the purpose of the dual 12-V input pins (7 and 20) on TPS2224ADBR?
Pins 7 and 20 are electrically identical 12-V inputs for the VPP power domain. They must be externally connected to reduce trace resistance and meet PC Card Standard current-sharing requirements for 12-V flash programming. This dual-pin structure minimizes voltage drop across the PCB and connector, ensuring stable 12-V delivery to both AVPP and BVPP outputs.
TPS2224ADBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 24-SSOP (0.209", 5.30mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- PCMCIA Switch
- Number of Outputs:
- 4
- Ratio - Input:Output:
- 3:4
- Output Configuration:
- High Side
- Output Type:
- -
- Interface:
- Serial
- Voltage - Load:
- 3.3V, 5V, 12V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 1A
- Rds On (Typ):
- 95mOhm
- Input Type:
- -
- Features:
- Status Flag
- Fault Protection:
- Current Limiting (Fixed), Over Temperature
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SSOP
TPS2224ADBR FAQ
1.How can I place an order for TPS2224ADBR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2224ADBR 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 TPS2224ADBR reliable?
The price and inventory of TPS2224ADBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2224ADBR is usually 5 days.
3.What payment methods are accepted for TPS2224ADBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2224ADBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2224ADBR?
TPS2224ADBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2224ADBR 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 TPS2224ADBR?
For technical support, including TPS2224ADBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2224ADBR requirements.
6.How does Aetrix verify that TPS2224ADBR is sourced from the original manufacturer or authorized distributors?
All TPS2224ADBR 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 TPS2224ADBR meets industry standards.
7.What is the process for return or replacement of TPS2224ADBR?
All TPS2224ADBR units undergo pre-shipment inspection (PSI). If there is an issue with TPS2224ADBR, 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 TPS2224ADBR part is unused and in its original packaging.
Return procedure for TPS2224ADBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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