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Texas Instruments TPS2220APWPR
- Part No.:
- TPS2220APWPR
- Manufacturer:
- Texas Instruments
- Package:
- 24-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS2220APWPR.pdf
- Description:
- IC PWR SWITCH 1:1 24HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,568
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Product details
Overview
TPS2220APWPR from Texas Instruments is a single-slot CardBus™ power-interface switch IC designed for controlled 3.3 V, 5 V, and 12 V distribution to PC Card sockets. It integrates dual VCC/VPP switching paths, break-before-make logic, thermal shutdown (135°C), current-limit protection (1 A xVCC / 100 mA xVPP), and 140-µA typical quiescent current. Used in notebook computers and digital cameras requiring compliant PC Card power management.
For engineers reviewing the TPS2220APWPR datasheet, TPS2220APWPR pinout, TPS2220APWPR application, or TPS2220APWPR equivalent, key selection criteria include its 24-pin HTSSOP (PWP) package, independent VPP/VCC control, UVLO thresholds (2.4 V on 3.3V input, 2.3 V on 5V input), and fast 3–10 µs current-limit response time under short-circuit conditions.
Technical Context
The TPS2220APWPR implements two independent high-side MOSFET power switches per slot-one for VCC (3.3 V/5 V) and one for VPP (3.3 V/5 V/12 V)-with integrated current-sense amplifiers, thermal trip circuitry, and discharge resistors (0.5–0.7 kΩ on xVCC, 0.2–0.4 kΩ on xVPP). Its serial interface (CLOCK/DATA/LATCH) enables programmable slot configuration without external logic.
UVLO and POR circuitry ensure safe power sequencing: all switches enter high-impedance state when VI(3.3V) drops below 2.4 V, and RESET is asserted internally when VI(POR) falls below 1.7 V. The device supports TTL-compatible inputs and open-drain OC reporting with 10 mA sink capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| rDS(on) xVCC | 85–110 mΩ at 750 mA (3.3 V input); ensures ≤0.083 V drop at full load, meeting PC Card 5% regulation margin. |
| rDS(on) xVPP | 0.8–1 Ω at 50 mA (3.3/5 V); 2–2.5 Ω at 50 mA (12 V); optimized for flash programming voltage integrity. |
| Current limit | 1 A steady-state on xVCC; 100–300 mA on xVPP; eliminates need for external fuses in PCMCIA-compliant designs. |
| Thermal shutdown | 135°C trip point with 10°C hysteresis; prevents latch-up during sustained overload or poor heatsinking. |
| Quiescent current | 140 µA typical from 3.3 V supply; enables low-power standby in battery-operated notebooks and PDAs. |
| UVLO threshold | 2.4–2.9 V on 3.3V pin; 2.3–2.8 V on 5V pin; guarantees clean power-down before host rail collapse. |
| OC response time | 3 µs (xVPP), 10 µs (xVCC); isolates faults faster than PC Card specification requires (≤100 µs). |
Pinout & Package
TPS2220APWPR is housed in a 24-pin HTSSOP (PWP) package with exposed thermal pad, optimized for surface-mount assembly and thermal dissipation in space-constrained laptop PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 (5V) | 5-V input supply | Primary power source for 5 V VCC and VPP switching paths; must be ≥3 V for operation. |
| 8 (AVPP) | Switched 12 V output | Delivers regulated 12 V to card's VPP terminal; supports legacy flash memory programming. |
| 9, 10 (AVCC) | Switched 3.3/5 V output | Provides VCC power to card slot; dual-pin layout minimizes IR drop across PCB traces. |
| 11 (GND) | Power ground | Common return for all internal switches and protection circuits; connects to system ground plane. |
| 12 (RESET) | Active-low reset input | Asynchronous command that forces all outputs to Hi-Z and discharges capacitors via internal discharge switches. |
| 13 (3.3V) | 3.3-V input supply | Supplies core logic and 3.3 V switching path; required for all operations including shutdown mode. |
| 15 (OC) | Open-drain overcurrent flag | Sinks 10 mA when any switch exceeds current limit; requires external pullup to monitor fault status. |
| 21 (SHDN) | Active-low shutdown | Disables all switches and reduces quiescent current to <2 µA; supports system-level power gating. |
Key Features
| Feature | Design Value |
|---|---|
| Independent VPP/VCC switching | Enables simultaneous or staggered activation of card power rails-critical for hot-plug compliance and voltage sequencing. |
| Break-before-make logic | Prevents cross-conduction between VCC and VPP paths during state transitions, eliminating shoot-through current in mixed-voltage cards. |
| Integrated discharge resistors | 0.5–0.7 kΩ on xVCC and 0.2–0.4 kΩ on xVPP rapidly bleed residual charge post-shutdown, satisfying PC Card safety discharge requirements. |
| Power-on reset (POR) | Asserts internal RESET when 3.3 V supply falls below 1.7 V, ensuring all switches start in known Hi-Z state at power-up. |
| TTL-compatible serial interface | CLOCK/DATA/LATCH signals allow full configuration via 11-bit command word-no external address decoding logic needed. |
Applications
| PC Card Slot Power Management | Notebook Computer Expansion Bay |
|---|---|
Use Scenario: Controlling power delivery to a single PCMCIA Type II slot in an ultraportable laptop. IC Role / Device Role / Timing Role: Single-slot power switch managing 3.3 V, 5 V, and 12 V rails with independent VCC/VPP control and fault reporting. Use Value: Eliminates discrete FETs, sense resistors, and protection ICs-reducing BOM count by ≥7 components while meeting PC Card Standard 8.0 timing and regulation. | Use Scenario: Enabling hot-plug insertion/removal of modem or wireless LAN cards in a docking station. IC Role / Device Role / Timing Role: Provides sequenced power-up (VCC before VPP), fast current-limit response (<10 µs), and OC fault signaling to host controller. Use Value: Prevents bus lockup during card insertion faults and ensures <100 ms recovery after overcurrent event-meeting JEDEC JESD22-A114 reliability targets. |
| Digital Camera Memory Card Interface | Set-Top Box PCMCIA Module |
Use Scenario: Powering CompactFlash or SmartMedia cards in a consumer digital camera with battery-backed operation. IC Role / Device Role / Timing Role: Delivers regulated 3.3 V VCC and 5 V VPP with UVLO hysteresis (100 mV) to prevent brownout-induced data corruption. Use Value: 140 µA quiescent current extends battery life >20% versus discrete solutions; thermal shutdown protects against enclosure overheating. | Use Scenario: Supporting CableCARD™ modules in cable TV set-top boxes requiring dual-voltage PC Card compatibility. IC Role / Device Role / Timing Role: Manages S-CARD and M-CARD power per CableLabs specifications, including 12 V VPP support and RESET synchronization. Use Value: Meets CableCARD 2.0 power sequencing requirements (Treset < 100 ms, Vpp ramp < 500 ms) without external timers or supervisors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CardBus power-switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2223APWPR | Dual-slot variant with identical pinout but no 12 V VPP support on AVPP/BVPP; lower cost for 3.3/5 V-only systems. | Designed for two-card hosts; lacks 12 V capability required for legacy flash programming. | Select TPS2223APWPR only if dual-slot support and absence of 12 V VPP are acceptable design constraints. |
| TPS2224APWPR | Dual-slot with full 12 V VPP on both AVPP and BVPP; same rDS(on) and current-limit specs as TPS2220APWPR. | Supports two independent PC Card slots with full voltage flexibility-requires additional PCB routing for second slot. | Choose TPS2224APWPR when expanding from single- to dual-slot architecture without redesigning power stage layout. |
Compared with TPS2223APWPR and TPS2224APWPR, the TPS2220APWPR uniquely provides single-slot functionality with full 12 V VPP support in a compact 24-pin HTSSOP, making it optimal for cost-sensitive, space-constrained notebook expansion interfaces where dual-slot capability is unnecessary.
Availability
TPS2220APWPR is available at Aetrix Electronics and suitable for notebook computers, digital cameras, and set-top box CableCARD™ modules requiring stable component supply, long-term lifecycle support, and PCMCIA-compliant power sequencing.
Supply support for TPS2220APWPR 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 over 50 years of innovation in power management ICs.
The TPS222x family was engineered specifically for PC Card and CardBus host controllers, delivering integrated, standards-compliant power switching with minimal external components and robust fault protection.
FAQ
What is the maximum continuous output current supported by TPS2220APWPR on its xVCC and xVPP channels?
The TPS2220APWPR supports up to 1 A steady-state output current on each xVCC channel (3.3 V or 5 V) and up to 100 mA on its xVPP channel (3.3 V, 5 V, or 12 V) at TJ = 100°C. These limits are enforced by internal current-limit circuitry and remain stable across the –40°C to 85°C ambient operating range. The TPS2220APWPR datasheet specifies these values under recommended operating conditions with proper PCB thermal design.
Does TPS2220APWPR support 12 V VPP output, and how is it configured?
Yes, the TPS2220APWPR supports 12 V VPP output on pin 8 (AVPP). It requires external connection of pins 7 and 20 (both labeled 12V) to the 12 V supply rail, as specified in the functional block diagram and pin assignment table. This dual-pin configuration ensures sufficient current delivery and low-impedance routing for flash memory programming. The TPS2220APWPR does not disable 12 V VPP-unlike TPS2223A-making it suitable for legacy PC Card applications.
How does the UVLO circuitry in TPS2220APWPR protect system power integrity?
The TPS2220APWPR incorporates dual UVLO thresholds: 2.4–2.9 V on the 3.3V pin and 2.3–2.8 V on the 5V pin. When either supply falls below its respective threshold, all internal switches transition to high-impedance state within microseconds, preventing unregulated or brownout-powered operation. This behavior ensures clean power-down and avoids data corruption in connected PC Cards. The TPS2220APWPR also includes 100 mV hysteresis to prevent oscillation near trip points.
Can TPS2220APWPR be used in dual-slot CardBus designs, or is it strictly single-slot?
The TPS2220APWPR is explicitly designed as a single-slot CardBus power switch, as confirmed by its product description, functional block diagram, and pinout (only AVCC/AVPP outputs, no BVCC/BVPP). Dual-slot operation requires TPS2223A, TPS2224A, or TPS2226A variants. Using TPS2220APWPR in a dual-slot system would require duplication of the IC or external multiplexing-neither supported by the TPS2220APWPR architecture or datasheet recommendations.
What thermal performance can be expected from TPS2220APWPR in a standard JEDEC low-k PCB layout?
In a JEDEC low-k board (2-oz. surface traces), the TPS2220APWPR has a power rating of 3322 mW at TA = 25°C, derating linearly at 33.22 mW/°C above 25°C. At TA = 85°C, its usable power dissipation is 1329 mW. This allows sustained 750 mA xVCC output with <0.083 V drop (at rDS(on) = 110 mΩ) without exceeding TJ = 100°C, assuming proper thermal pad soldering and airflow. The TPS2220APWPR thermal shutdown activates at 135°C with 10°C hysteresis.
TPS2220APWPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 24-PowerTSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Type:
- PCMCIA Switch
- Number of Outputs:
- 3
- Ratio - Input:Output:
- 1:1
- 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
TPS2220APWPR FAQ
1.How can I place an order for TPS2220APWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2220APWPR 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 TPS2220APWPR reliable?
The price and inventory of TPS2220APWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2220APWPR is usually 5 days.
3.What payment methods are accepted for TPS2220APWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2220APWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2220APWPR?
TPS2220APWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2220APWPR 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 TPS2220APWPR?
For technical support, including TPS2220APWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2220APWPR requirements.
6.How does Aetrix verify that TPS2220APWPR is sourced from the original manufacturer or authorized distributors?
All TPS2220APWPR 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 TPS2220APWPR meets industry standards.
7.What is the process for return or replacement of TPS2220APWPR?
All TPS2220APWPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS2220APWPR, 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 TPS2220APWPR part is unused and in its original packaging.
Return procedure for TPS2220APWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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