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Texas Instruments TPS2221PWPR
- Part No.:
- TPS2221PWPR
- Manufacturer:
- Texas Instruments
- Package:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS2221PWPR.pdf
- Description:
- IC PWR SWITCH 3:2 14HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,637
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Product details
Overview
TPS2221PWPR from Texas Instruments is a single-slot PC Card power-interface switch for parallel PCMCIA controllers, delivering programmable 3.3 V, 5 V, and 1.8 V to VCC and VPP/VCORE outputs with integrated current-limiting protection, thermal shutdown, and break-before-make switching in a 14-pin HTSSOP package. It supports CableCARD™ applications and operates across −40°C to 85°C ambient.
For engineers reviewing the TPS2221PWPR datasheet, TPS2221PWPR pinout, TPS2221PWPR application, or TPS2221PWPR equivalent, key selection criteria include its parallel interface (VD0–VD3), dual-output voltage routing (VCC/VPP-VCORE), 64 µA typical quiescent current at 3.3 V input, overcurrent reporting via open-drain OC pin, and compliance with PC Card standards for notebook, PDA, and digital camera host systems.
Technical Context
The TPS2221PWPR implements a parallel-control power switch architecture with four dedicated VD[3:0] inputs driving independent logic states for VCC and VPP/VCORE outputs. Each output path includes thermally compensated current limiting and UVLO monitoring per input rail (3.3VIN, 5VIN, 1.8VIN).
It features separate discharge resistors (0.1–0.5 kΩ) on both VCC and VPP/VCORE outputs, asynchronous SHDN_RST and OC signaling, and dual thermal shutdown thresholds (120°C for overcurrent-induced heating, 155°C for general junction protection), ensuring robust fault handling without host processor intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | Single-slot: one VCC output (3.3 V/5 V selectable), one VPP/VCORE output (1.8 V/3.3 V/5 V selectable) |
| Max Output Current | VCC: 1 A continuous at TJ = 100°C; VPP/VCORE: 500 mA at 1.8 V/3.3 V, 100 mA at 5 V |
| On-Resistance (rDS(on)) | 72 mΩ typ (3.3VIN→VCC), 196 mΩ typ (3.3VIN→VPP/VCORE), 97 mΩ typ (5VIN→VCC) |
| Quiescent Current | 64 µA typ at 3.3 V input (normal operation); 5 µA in shutdown mode |
| UVLO Thresholds | 3.3VIN: 2.2–2.9 V; 5VIN: 2.0–2.6 V; 1.8VIN: 1.25–1.62 V - ensures safe power sequencing |
| Thermal Protection | Two-tier shutdown: 120°C (overcurrent-triggered, disables affected outputs), 155°C (global junction limit) |
| Package | 14-pin HTSSOP (PWP), 5.0 mm × 6.4 mm × 1.2 mm, exposed thermal pad |
Pinout & Package
TPS2221PWPR uses a 14-pin HTSSOP (PWP) package with exposed thermal pad for enhanced power dissipation. Pin 1 is located at the top-left corner adjacent to the index mark.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 5VIN | 5-V input supply for VCC and VPP/VCORE outputs; must be present for 5-V operation |
| 2 | VD1 | Parallel control bit 1; part of 4-bit VD[3:0] word defining output state and voltage selection |
| 3 | 3.3VIN | 3.3-V input supply and mandatory chip power rail; device does not operate without this |
| 4,5 | VCC | Dual-pin output delivering switched 0 V / 3.3 V / 5 V to PC Card VCC terminals |
| 6 | 5VIN | Second 5-V input connection; tied internally to Pin 1 for redundancy and current sharing |
| 7 | GND | Power ground reference for all internal circuits and output discharge paths |
| 8 | SHDN_RST | Asynchronous active-low shutdown/reset; forces all outputs to Hi-Z and enables discharge |
| 9 | OC | Open-drain overcurrent status flag; pulled low during any output current-limit event |
| 10 | 1.8VIN | 1.8-V input for VPP/VCORE output; required only when 1.8-V card power is enabled |
| 11,12 | VPP/VCORE | Dual-pin output delivering switched 0 V / 1.8 V / 3.3 V / 5 V to PC Card VPP/VCORE terminals |
| 13 | VD3 | Parallel control bit 3; MSB of VD[3:0] control word |
| 14 | VD2 | Parallel control bit 2; completes 4-bit parallel interface for deterministic output configuration |
Key Features
| Feature | Design Value |
|---|---|
| Parallel 4-bit interface (VD0–VD3) | Enables deterministic, glitch-free output state selection without serial clock/data timing constraints |
| Independent VCC and VPP/VCORE switching | Allows simultaneous but distinct voltage delivery (e.g., 3.3 V to VCC, 1.8 V to VPP/VCORE) per PC Card spec |
| Break-before-make switching | Prevents cross-conduction and bus contention during voltage transitions between 1.8 V / 3.3 V / 5 V rails |
| Per-rail UVLO monitoring | Disables affected outputs if 3.3VIN, 5VIN, or 1.8VIN drops below threshold - prevents brownout-induced misoperation |
| Integrated output discharge (0.1–0.5 kΩ) | Ensures rapid, controlled ramp-down of VCC and VPP/VCORE when disabled - meets PCMCIA hot-swap safety requirements |
| Asynchronous SHDN_RST with internal pullup | Guarantees known Hi-Z state on power-up or system reset without external biasing components |
Applications
| Notebook PC PCMCIA Host | PDA Expansion Slot Controller |
|---|---|
Use Scenario: Power management for Type II PC Card slots in ultra-portable notebooks supporting modems, wireless LAN, or storage cards. IC Role / Device Role / Timing Role: Single-slot power interface switch providing sequenced 3.3 V/5 V/1.8 V to VCC and VPP/VCORE under parallel host CPU control. Use Value: Enables full PC Card standard compliance with <1 µs propagation delay, integrated OC reporting, and thermal fault isolation - eliminating discrete FETs and sense resistors. |
Use Scenario: Compact expansion interface in handheld PDAs requiring hot-plug-safe power delivery to memory or GPS add-on cards. IC Role / Device Role / Timing Role: Parallel-controlled power switch managing VCC and VPP/VCORE rails with automatic discharge and UVLO protection. Use Value: Reduces BOM count by 7+ components versus discrete solution while meeting −40°C to 85°C industrial operating range and 64 µA quiescent current. |
| Digital Camera PC Card Reader | CableCARD™ Host Interface |
Use Scenario: Embedded PCMCIA reader in DSLR or prosumer cameras for CF/PC Card media access. IC Role / Device Role / Timing Role: Single-slot power switch delivering 3.3 V to VCC and 1.8 V to VPP/VCORE for low-power flash memory cards. Use Value: Supports fast turn-on (<1 ms) and controlled fall time (2.5–3.1 ms) to prevent data corruption during card insertion/removal. |
Use Scenario: Cable Television set-top box interface for CableCARD™ modules requiring strict PC Card power sequencing. IC Role / Device Role / Timing Role: Parallel-configured power manager providing independent VCC and VPP/VCORE control per CableLabs® specification. Use Value: Meets CableCARD™ power-up timing (tPDON < 1.4 ms), overcurrent detection (<2 µs response), and thermal hysteresis (10°C) without firmware overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PC Card power-switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2221PWP | No R suffix; same die, identical electrical specs, but supplied in cut-tape instead of reel | Same footprint and functionality; differs only in packaging format and minimum order quantity | Select TPS2221PWP for prototyping or low-volume builds where reel packaging is unnecessary |
| TPS2228PWP | Dual-slot serial-interface variant with 20-pin HTSSOP; supports two independent PC Card sockets via CLOCK/DATA/LATCH | Designed for dual-socket hosts (e.g., docking stations); incompatible pinout and control protocol | Choose TPS2228PWP only when expanding to dual-slot architecture - not a drop-in replacement |
Compared with TPS2221PWP, TPS2221PWPR offers identical performance in a tape-and-reel format optimized for automated SMT assembly, while TPS2228PWP provides dual-slot capability at the cost of increased pin count, serial interface complexity, and no pin compatibility.
Availability
TPS2221PWPR is available at Aetrix Electronics and suitable for notebook PC designs, PDA expansion interfaces, and digital camera PC Card readers requiring stable component supply, long-term lifecycle support, and traceable sourcing for industrial and consumer electronics programs.
Supply support for TPS2221PWPR 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 ICs for computing and communications infrastructure.
The TPS2221PWPR belongs to TI's PC Card power-interface switch product line, engineered specifically to replace discrete MOSFETs and controllers in PCMCIA-compliant host systems while delivering integrated protection, low quiescent current, and parallel configurability.
FAQ
What is the function of the SHDN_RST pin on the TPS2221PWPR?
The SHDN_RST pin on the TPS2221PWPR is an asynchronous active-low input that simultaneously forces all VCC and VPP/VCORE outputs into high-impedance (Hi-Z) state and activates internal discharge paths. It features an internal pullup resistor, ensuring a defined Hi-Z default on power-up or system reset - eliminating need for external biasing. This pin serves dual role as both shutdown and hardware reset signal for deterministic power-state recovery.
Does the TPS2221PWPR support 1.8-V-only PC Cards?
Yes, the TPS2221PWPR supports 1.8-V-only PC Cards via its dedicated 1.8VIN input and VPP/VCORE output. When 1.8VIN is applied and appropriate VD[3:0] control bits are set, the device delivers regulated 1.8 V to the VPP/VCORE terminals while VCC remains unpowered or set to 3.3 V/5 V independently. The 1.8-V path has 69 mΩ typical rDS(on) and 500 mA current limit at TJ = 100°C - fully compliant with JEDEC JESD8-12A for low-voltage card operation.
How does overcurrent protection work on the TPS2221PWPR?
The TPS2221PWPR implements per-output current limiting with separate thresholds: VCC limits at 1 A (typ), VPP/VCORE limits at 500 mA (1.8 V/3.3 V) or 100 mA (5 V). Upon overcurrent detection, it linearly regulates output current rather than latching off, and asserts the open-drain OC pin low within 2–250 µs depending on rail voltage. The OC signal remains active until current falls below hysteresis threshold, enabling host-level fault logging without interrupting other outputs.
Can the TPS2221PWPR be used in place of the TPS2228PWPR?
No, the TPS2221PWPR cannot substitute for the TPS2228PWPR due to fundamental architectural differences: TPS2221PWPR is single-slot with parallel VD[3:0] control and 14-pin HTSSOP package, while TPS2228PWPR is dual-slot with serial CLOCK/DATA/LATCH interface and 20-pin HTSSOP. Their pinouts, control protocols, and output channel counts are incompatible - using one in place of the other would require PCB redesign and firmware changes.
What is the purpose of the dual VCC and VPP/VCORE output pins on the TPS2221PWPR?
The dual-pin VCC (Pins 4,5) and dual-pin VPP/VCORE (Pins 11,12) on the TPS2221PWPR directly mirror the PC Card standard's requirement for redundant power terminals: two VCC and two VPP/VCORE connections minimize contact resistance and voltage drop across the 68-pin connector. This design ensures stable, low-noise power delivery to the card while meeting PCMCIA mechanical and electrical specifications for hot-plug reliability and current sharing.
TPS2221PWPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Type:
- PCMCIA Switch
- Number of Outputs:
- 2
- Ratio - Input:Output:
- 3:2
- Output Configuration:
- High Side
- Output Type:
- -
- Interface:
- Parallel
- Voltage - Load:
- 1.8V, 3.3V, 5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 1A
- Rds On (Typ):
- 97mOhm
- 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:
- 14-HTSSOP
TPS2221PWPR FAQ
1.How can I place an order for TPS2221PWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2221PWPR 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 TPS2221PWPR reliable?
The price and inventory of TPS2221PWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2221PWPR is usually 5 days.
3.What payment methods are accepted for TPS2221PWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2221PWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2221PWPR?
TPS2221PWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2221PWPR 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 TPS2221PWPR?
For technical support, including TPS2221PWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2221PWPR requirements.
6.How does Aetrix verify that TPS2221PWPR is sourced from the original manufacturer or authorized distributors?
All TPS2221PWPR 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 TPS2221PWPR meets industry standards.
7.What is the process for return or replacement of TPS2221PWPR?
All TPS2221PWPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS2221PWPR, 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 TPS2221PWPR part is unused and in its original packaging.
Return procedure for TPS2221PWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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