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Texas Instruments TPS2224APWP
- Part No.:
- TPS2224APWP
- Manufacturer:
- Texas Instruments
- Package:
- 24-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS2224APWP.pdf
- Description:
- IC PWR SWITCH 3:4 24HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,785
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Product details
Overview
TPS2224APWP from Texas Instruments is a dual-slot CardBus™ power-interface switch for PCMCIA host controllers, integrating independent 3.3 V/5 V/12 V VCC and VPP switching per slot with break-before-make sequencing, thermal shutdown (135°C), and fast current-limit response (3 µs on 12 V). It delivers up to 750 mA per 5 V xVCC channel and 100 mA per 12 V xVPP channel, supporting CableCARD™ and legacy PC Card applications in notebook computers and set-top boxes.
For engineers reviewing the TPS2224APWP datasheet, TPS2224APWP pinout, TPS2224APWP application, or TPS2224APWP equivalent, this device requires attention to its dual-slot serial control interface (CLOCK/DATA/LATCH), independent VPP/VCC enable logic, 24-pin HTSSOP (PWP) package thermal derating, and absence of 12 V support on TPS2223A - all critical for PCMCIA-compliant power sequencing and fault reporting via open-drain OC pin.
Technical Context
The TPS2224APWP implements two fully independent power-switch channels (AVCC/AVPP and BVCC/BVPP), each with dedicated MOSFET drivers, current-sense amplifiers, and thermal shutdown circuitry. Its serial interface uses asynchronous LATCH-strobed 11-bit command words to configure voltage selection, enable state, and discharge control per channel.
It supports simultaneous 3.3 V, 5 V, and 12 V delivery to two PC Card slots with independent UVLO thresholds (2.4 V for 3.3 V, 2.5 V for 5 V, 7 V for 12 V) and power-on reset (POR) assertion below 1.7 V on VI(3.3V). The device enforces break-before-make switching between VCC and VPP rails to prevent card bus contention during voltage transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Channels | Dual-slot: AVCC/AVPP + BVCC/BVPP, each independently configurable for 3.3 V/5 V/12 V or Hi-Z |
| rDS(on) - 5 V to xVCC | 110 mΩ typical at TJ = 25°C; ensures ≤0.825 V drop at 750 mA load per channel |
| rDS(on) - 12 V to xVPP | 2.5 Ω typical at TJ = 25°C; enables 100 mA max output with <0.25 V drop |
| Current Limit - xVPP | 200 mA typical steady-state short-circuit limit; protects 12 V flash-programming circuits |
| Current Limit Response | 3 µs for 12 V xVPP short detection; prevents latch-up before thermal trip (135°C) |
| Quiescent Current | 140 µA typical from 3.3 V supply; minimizes standby power in battery-powered hosts |
| Operating Temperature | –40°C to +85°C ambient; validated for industrial notebook and set-top box environments |
Pinout & Package
TPS2224APWP is housed in a 24-pin HTSSOP (PWP) package with exposed thermal pad, rated for 3322 mW dissipation at TA = 25°C and 1329 mW at TA = 85°C on JEDEC low-k board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 24 | 5V Input | Primary 5 V supply input for both slots; must be ≥3 V for full operation |
| 7, 20 | 12V Input | 12 V input for VPP switching; pins must be externally connected per datasheet Note C |
| 8 | AVPP Output | Switched 3.3/5/12 V output for Slot A VPP; supports flash programming voltage |
| 9, 10 | AVCC Output | Switched 3.3/5 V output for Slot A VCC; no 12 V capability |
| 13, 14 | 3.3V Input | 3.3 V supply for internal logic and Slot A/B VCC paths; required for all functions |
| 15 | OC Output | Open-drain overcurrent flag; sinks 10 mA when any channel exceeds current limit |
| 17, 18 | BVCC Output | Switched 3.3/5 V output for Slot B VCC; independent of AVCC control |
| 19 | BVPP Output | Switched 3.3/5/12 V output for Slot B VPP; mirrors AVPP functionality |
| 11 | GND | Analog/digital ground reference; connects to PCB thermal pad for heat dissipation |
| 3, 4, 5 | DATA/CLOCK/LATCH | 3-wire serial interface; LATCH strobes 11-bit command word on rising edge |
| 12 | RESET | Asynchronous active-low reset; forces all outputs to Hi-Z and discharges capacitors |
| 21 | SHDN | Active-low shutdown; disables all switches and reduces quiescent current to <2 µA |
Key Features
| Feature | Design Value |
|---|---|
| Independent VPP/VCC switching | Enables separate 12 V VPP programming and 3.3/5 V VCC operation per slot without shared rail constraints |
| Break-before-make sequencing | Prevents bus contention during voltage transitions by ensuring >100 ns gap between turn-off and turn-on |
| Fast 3 µs 12 V overcurrent response | Isolates faults before thermal shutdown activates, preserving system uptime in multi-card hosts |
| 140 µA typical quiescent current | Reduces standby power draw in portable systems where 3.3 V supply remains active during sleep |
| PC Card Standard compliance | Meets peak/average current, voltage regulation (±5% on 5 V), and timing requirements per PCMCIA spec |
Applications
| CableCARD™ Host Interface | Notebook PCMCIA Expansion |
|---|---|
Use Scenario: CableCARD™ module insertion into digital TV set-top box requiring secure, hot-pluggable power management. IC Role / Device Role / Timing Role: Dual-slot power switch providing isolated 3.3 V VCC and 12 V VPP to CableCARD™ while enforcing PCMCIA-compliant sequencing and fault reporting. Use Value: Enables certified CableCARD™ interoperability with automatic overcurrent isolation and POR-driven safe initialization. |
Use Scenario: Adding wireless LAN or GPS PC Card to ultraportable notebook via mini-PCI or CardBus slot. IC Role / Device Role / Timing Role: Dual-channel power controller delivering 5 V VCC and 12 V VPP to CardBus peripherals with <2.5 ms turn-on propagation delay. Use Value: Supports hot-swap compliance and eliminates need for discrete fuses or external current monitors. |
| Digital Set-Top Box Expansion | Industrial PDA Docking Station |
Use Scenario: Field-upgradable conditional access module (CAM) insertion into broadcast receiver with strict ESD and thermal safety requirements. IC Role / Device Role / Timing Role: Dual-slot power manager enabling independent 3.3 V/5 V/12 V delivery with thermal shutdown (135°C) and UVLO hysteresis (100 mV). Use Value: Guarantees reliable CAM operation across –40°C to +85°C ambient while meeting CE/FCC emissions limits. |
Use Scenario: Ruggedized PDA docking cradle supporting legacy PC Card peripherals in factory automation environments. IC Role / Device Role / Timing Role: Dual-channel switch providing 5 V VCC and 12 V VPP with 100 mA xVPP current limit and open-drain OC fault signaling. Use Value: Simplifies BOM by integrating two independent power switches with shared serial control and thermal protection. |
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 |
|---|---|---|---|
| TPS2226APWP | 30-pin SSOP package; adds third VCC output (pin 11) and extra NC pins; identical electrical specs and timing | Requires PCB layout change due to larger footprint and different pin count; same functional behavior | Select when board space allows larger package and additional AVCC redundancy is desired |
| TPS2224ADB | Same 24-pin DB (SOIC) package; lower power rating (489 mW at 70°C vs 1827 mW for PWP); identical pinout and logic | Thermal performance limited in high-density layouts; suitable for lower ambient or forced-air-cooled designs | Select when cost-sensitive SOIC assembly is preferred and thermal margin permits |
Compared with TPS2224APWP, the TPS2226APWP offers identical functionality in a larger 30-pin package for enhanced routing flexibility, while the TPS2224ADB provides pin-compatible SOIC packaging at reduced thermal capacity - making the PWP variant optimal for compact, thermally constrained CardBus host designs.
Availability
TPS2224APWP is available at Aetrix Electronics and suitable for notebook computer expansion, CableCARD™ host interfaces, and industrial PDA docking stations requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TPS2224APWP 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 IC design.
The TPS222x family was engineered specifically for PCMCIA/CardBus host controllers, delivering integrated dual-slot power switching, serial configuration, and robust fault protection to replace discrete MOSFETs, sense resistors, and protection ICs.
FAQ
What is the maximum continuous output current supported by TPS2224APWP on its 12 V xVPP channels?
The TPS2224APWP supports a steady-state short-circuit current limit of 200 mA typical on each 12 V xVPP output (AVPP and BVPP), as specified in the Electrical Characteristics table. This limit is enforced by internal current-sense circuitry and is valid up to TJ = 100°C, ensuring safe operation during flash-memory programming cycles without external current limiting components.
Does TPS2224APWP support independent control of VCC and VPP for each slot?
Yes, TPS2224APWP provides fully independent control of VCC and VPP for both Slot A and Slot B via its 11-bit serial command structure. Each channel (AVCC, AVPP, BVCC, BVPP) can be individually enabled/disabled, configured for 3.3 V/5 V/12 V output, or set to high-impedance state - enabling mixed-voltage card configurations and safe hot-plug sequencing.
What is the purpose of the OC pin on TPS2224APWP, and how should it be interfaced?
OC is an open-drain overcurrent reporting output that pulls low when any switched output exceeds its current limit. It requires an external pullup resistor (typically 10 kΩ to 3.3 V) and interfaces directly to host processor GPIO or interrupt lines. When asserted, it indicates which channel is faulting based on serial register readback, enabling precise fault isolation in multi-slot systems.
How does the thermal shutdown mechanism operate in TPS2224APWP?
TPS2224APWP incorporates a thermal shutdown circuit that trips at TJ = 135°C (rising temperature) with 10°C hysteresis. Upon activation, all power switches are forced into high-impedance state and discharge paths are enabled. Recovery occurs automatically once junction temperature falls below 125°C, allowing graceful thermal recovery without host intervention.
Can TPS2224APWP be used in single-slot applications, and if so, how is Slot B disabled?
Yes, TPS2224APWP supports single-slot operation. Slot B outputs (BVCC/BVPP) are disabled by writing '0' to their respective enable bits (D8/D9 in the 11-bit command word) via the serial interface. All control logic remains active, and the device retains full diagnostic capability for the enabled Slot A channels while consuming minimal additional quiescent current.
TPS2224APWP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 24-PowerTSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Bulk
- 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-HTSSOP
TPS2224APWP FAQ
1.How can I place an order for TPS2224APWP through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2224APWP 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 TPS2224APWP reliable?
The price and inventory of TPS2224APWP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2224APWP is usually 5 days.
3.What payment methods are accepted for TPS2224APWP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2224APWP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2224APWP?
TPS2224APWP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2224APWP 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 TPS2224APWP?
For technical support, including TPS2224APWP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2224APWP requirements.
6.How does Aetrix verify that TPS2224APWP is sourced from the original manufacturer or authorized distributors?
All TPS2224APWP 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 TPS2224APWP meets industry standards.
7.What is the process for return or replacement of TPS2224APWP?
All TPS2224APWP units undergo pre-shipment inspection (PSI). If there is an issue with TPS2224APWP, 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 TPS2224APWP part is unused and in its original packaging.
Return procedure for TPS2224APWP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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