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Texas Instruments TPS2223ADBG4
- Part No.:
- TPS2223ADBG4
- Manufacturer:
- Texas Instruments
- Package:
- 24-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
TPS2223ADBG4.pdf
- Description:
- IC PWR SWITCH 3:4 24SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,166
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Product details
Overview
TPS2223ADBG4 from Texas Instruments is a dual-slot CardBus™ power-interface switch IC designed for controlled 3.3 V and 5 V distribution to two PC Card sockets. It integrates dual VCC and dual VPP switching paths, features 110 mΩ typical rDS(on) at 5 V→xVCC, 140 µA typical quiescent current from 3.3 V, thermal shutdown at 135°C, and break-before-make switching - enabling compliant power management in notebook computers and CableCARD™ host systems.
For engineers reviewing the TPS2223ADBG4 datasheet, TPS2223ADBG4 pinout, TPS2223ADBG4 application, or TPS2223ADBG4 equivalent, this page delivers verified technical context, exact pin functions for the 24-pin HTSSOP (DB) package, confirmed dual-slot PCMCIA power-switching capability without 12 V support, and validated alternatives for legacy CardBus interface designs.
Technical Context
The TPS2223ADBG4 implements two independent high-side power switches per slot (AVCC/BVCC for 3.3 V/5 V VCC; AVPP/BVPP for VPP), with separate logic-controlled enable via serial interface (CLOCK/DATA/LATCH) and asynchronous SHDN/RESET inputs. Its internal current-limit circuit responds in ≤10 µs to short-circuit faults on xVCC outputs and ≤3 µs on xVPP outputs, with steady-state limits of 1 A (xVCC) and 200 mA (xVPP) at TJ = 100°C.
UVLO thresholds are set at 2.7 V (3.3 V rail) and 2.5 V (5 V rail); POR asserts RESET internally below 1.7 V on VI(3.3V). All outputs enter high-impedance state during UVLO or shutdown, and discharge resistors (0.7 kΩ typical at xVCC, 0.4 kΩ at xVPP) actively pull down capacitive loads when disabled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| rDS(on) (5V→xVCC) | 110 mΩ typical - ensures ≤750 mV drop at 750 mA load, meeting PC Card 5% VO(reg) spec under worst-case PCB loss |
| IO(xVCC) limit | 1 A steady-state - supports peak current demands of 3.3 V/5 V PC Cards per slot without external fusing |
| IO(xVPP) limit | 200 mA steady-state - sufficient for 3.3 V/5 V VPP programming in flash-based cards; no 12 V support per datasheet note |
| Quiescent current | 140 µA typical from 3.3 V - enables low-power standby in battery-operated notebooks and PDAs |
| Thermal shutdown | 135°C trip point with 10°C hysteresis - protects against sustained overload or poor heatsinking in compact enclosures |
| Operating temperature | –40°C to +85°C ambient - qualified for industrial and mobile computing environments |
| Logic compatibility | TTL-level inputs (VIH = 2 V, VIL = 0.8 V) - interfaces directly with standard 3.3 V/5 V microcontrollers and CPLDs |
Pinout & Package
TPS2223ADBG4 is housed in a 24-pin HTSSOP (DB) package with exposed thermal pad, measuring 7.8 mm × 4.4 mm × 1.2 mm. Pin 1 is located at the top-left corner adjacent to the index mark.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 24 | 5V input | Primary 5-V supply input for both slots; must be decoupled locally per datasheet layout guidance |
| 3 | DATA input | Serial data line for configuring switch states (D0–D10); LSB-first, clocked on rising edge |
| 4 | CLOCK input | Serial interface clock; max 2.5 MHz; synchronizes DATA sampling and LATCH capture |
| 5 | LATCH input | Active-high signal that latches current DATA word into control register; internal pulldown |
| 7, 20 | NC | No internal connection - pins 7 and 20 are explicitly unused for TPS2223A per datasheet note |
| 8 | AVPP output | Switched VPP output for Slot A; supports 3.3 V or 5 V only (no 12 V capability) |
| 9, 10 | AVCC output | Switched VCC output for Slot A; delivers 3.3 V or 5 V to card VCC pins |
| 11 | GND | Power ground reference for all internal circuits and switch return paths |
| 12 | RESET input | Asynchronous active-low reset; internal pullup; forces all switches to Hi-Z and discharge on assertion |
| 13, 14 | 3.3V input | 3.3-V supply for chip logic and Slot A/B VCC switching; required for all operation |
| 15 | OC output | Open-drain overcurrent flag; sinks 10 mA max; requires external pullup to monitor fault conditions |
| 17, 18 | BVCC output | Switched VCC output for Slot B; identical function and rating to AVCC |
| 19 | BVPP output | Switched VPP output for Slot B; 3.3 V/5 V only, matching AVPP capability |
| 21 | SHDN input | Asynchronous active-low shutdown; internal pullup; places all switches in Hi-Z and disables logic |
| 22, 23 | NC | No internal connection - confirmed unused per Terminal Functions table |
Key Features
| Feature | Design Value |
|---|---|
| Dual-slot VCC/VPP switching | Independent control of AVCC/AVPP and BVCC/BVPP enables simultaneous or staggered power-up of two PC Cards |
| Break-before-make sequencing | Prevents cross-conduction between voltage rails during switching transitions, eliminating shoot-through risk |
| Integrated current limiting & thermal protection | Eliminates need for external fuses or discrete current-sense circuits in space-constrained CardBus hosts |
| Active discharge on disable | 0.7 kΩ (xVCC) / 0.4 kΩ (xVPP) internal discharge paths rapidly collapse output voltages, aiding hot-plug safety |
| Power-on reset with UVLO | Guarantees known Hi-Z state at power-up and during brownout; prevents undefined card power states |
Applications
| Notebook Computer CardBus Host | CableCARD™ Host Device |
|---|---|
Use Scenario: Powering two concurrent PC Cards (e.g., Wi-Fi + SSD) in a slim-profile laptop with shared 3.3 V/5 V rails. IC Role / Device Role / Timing Role: Dual high-side power switch managing VCC/VPP delivery, sequencing, and fault reporting per slot. Use Value: Enables full PCMCIA compliance without discrete MOSFETs, current sensors, or thermal monitors - reducing BOM count by ≥7 components. |
Use Scenario: Delivering regulated 3.3 V and 5 V to CableCARD™ modules in set-top boxes requiring hot-swap capability. IC Role / Device Role / Timing Role: Controlled power-enable switch with fast current-limit response (<10 µs) to protect sensitive conditional-access hardware. Use Value: Meets SCTE/ANSI CableCARD™ power-spec requirements while supporting automatic fault isolation via OC pin. |
| Digital Camera PC Card Interface | PDA Expansion Slot Controller |
Use Scenario: Adding CompactFlash or SDIO-based storage/communication to professional digital cameras with strict power budget. IC Role / Device Role / Timing Role: Low-quiescent-current (140 µA) power switch enabling long battery life in standby mode. Use Value: Maintains <200 µA system sleep current while retaining ability to power up cards on demand via serial interface. |
Use Scenario: Managing power to peripheral cards (GPS, Bluetooth, cellular) in handheld PDAs with limited board area. IC Role / Device Role / Timing Role: Dual-channel switch with integrated discharge resistors ensuring safe hot-insertion and removal. Use Value: Eliminates need for external bleed resistors and timing delays, simplifying layout and improving reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-slot CardBus power-switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2224ADBG4 | Supports 12 V on AVPP/BVPP pins; otherwise identical pinout, logic, and switching specs | Required where legacy PC Cards demand 12 V VPP programming voltage | Select TPS2224ADBG4 only if 12 V VPP capability is needed; TPS2223ADBG4 reduces cost and complexity when 12 V is unused. |
| TPS2226APWPR | 30-pin SSOP package; adds third VCC/VPP channel and extended feature set including standby-mode support | Targeted at triple-slot or enhanced interface-mode host designs not supported by TPS2223ADBG4 | Choose TPS2226APWPR only for systems requiring >2 slots or advanced serial command features; not a drop-in replacement. |
Compared with TPS2224ADBG4 and TPS2226APWPR, the TPS2223ADBG4 offers optimal cost and footprint for dual-slot hosts exclusively using 3.3 V/5 V VCC/VPP - eliminating unused 12 V circuitry and minimizing thermal dissipation in space-constrained designs.
Availability
TPS2223ADBG4 is available at Aetrix Electronics and suitable for notebook computer design, CableCARD™ host development, and PDA expansion slot implementation requiring stable component supply across extended production lifecycles.
Supply support for TPS2223ADBG4 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 PCMCIA-compliant CardBus host controllers, delivering integrated dual-slot power switching, fault protection, and serial configuration to replace discrete MOSFET-based designs.
FAQ
What is the maximum supported load current per VCC channel on the TPS2223ADBG4?
The TPS2223ADBG4 provides a steady-state current-limit threshold of 1 A per xVCC output (AVCC and BVCC) at TJ = 100°C, with typical rDS(on) of 110 mΩ at 5 V input. This supports full PC Card 5 V peak current requirements while maintaining voltage regulation within ±5% under worst-case PCB trace resistance. The device also features fast current-limit response (<10 µs) to prevent damage during short-circuit events.
Does the TPS2223ADBG4 support 12 V VPP output?
No, the TPS2223ADBG4 does not support 12 V VPP output. Pins 7 and 20 are explicitly marked NC (no internal connection) for this variant, and the datasheet confirms "Optimized for lower power implementation, the TPS2223A does not support 12-V switching to VPP." AVPP and BVPP outputs are limited to 3.3 V or 5 V only - making it suitable for modern CardBus applications where 12 V is obsolete.
How does the TPS2223ADBG4 handle power sequencing during startup?
The TPS2223ADBG4 incorporates a power-on reset (POR) circuit that asserts internal RESET below 1.7 V on the 3.3 V input, forcing all switches into high-impedance state until stable supply is detected. Combined with UVLO thresholds (2.7 V on 3.3 V rail, 2.5 V on 5 V rail), this ensures deterministic startup behavior: all outputs remain off until both supplies meet minimum regulation, preventing partial or unsafe power application to PC Cards.
What is the purpose of the OC pin on the TPS2223ADBG4?
OC is an open-drain overcurrent reporting output on the TPS2223ADBG4 that pulls low when any xVCC or xVPP output exceeds its programmed current-limit threshold. It sinks up to 10 mA and requires an external pullup resistor. This pin enables system-level fault isolation - for example, a microcontroller can monitor OC to identify which slot experienced overload and initiate graceful shutdown or retry logic without disrupting the other slot.
Can the TPS2223ADBG4 be used in single-slot applications?
Yes, the TPS2223ADBG4 is fully compatible with single-slot implementations. Its dual-channel architecture allows either AVCC/AVPP or BVCC/BVPP to be used independently while leaving the other channel unconnected or configured inactive via serial interface. The device's 140 µA typical quiescent current and break-before-make switching ensure efficient, safe operation even when only one slot is populated - making it a flexible choice for scalable host designs.
TPS2223ADBG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 24-SSOP (0.209", 5.30mm Width)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- 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
- 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
TPS2223ADBG4 FAQ
1.How can I place an order for TPS2223ADBG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2223ADBG4 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 TPS2223ADBG4 reliable?
The price and inventory of TPS2223ADBG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2223ADBG4 is usually 5 days.
3.What payment methods are accepted for TPS2223ADBG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2223ADBG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2223ADBG4?
TPS2223ADBG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2223ADBG4 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 TPS2223ADBG4?
For technical support, including TPS2223ADBG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2223ADBG4 requirements.
6.How does Aetrix verify that TPS2223ADBG4 is sourced from the original manufacturer or authorized distributors?
All TPS2223ADBG4 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 TPS2223ADBG4 meets industry standards.
7.What is the process for return or replacement of TPS2223ADBG4?
All TPS2223ADBG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS2223ADBG4, 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 TPS2223ADBG4 part is unused and in its original packaging.
Return procedure for TPS2223ADBG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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