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Texas Instruments TPS2204APWP
- Part No.:
- TPS2204APWP
- Manufacturer:
- Texas Instruments
- Package:
- 24-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS2204APWP.pdf
- Description:
- IC PWR SWITCH 3:4 24HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,468
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Product details
Overview
TPS2204APWP from Texas Instruments is a dual-slot PC CardBus™ power-interface switch providing integrated 3.3-V, 5-V, and 12-V VCC/VPP switching for two PC Card sockets. It features break-before-make switching, 85-mΩ rDS(on) on 3.3-V VCC paths, 1-A steady-state current limit per xVCC output, thermal shutdown at 135°C, and open-drain overcurrent reporting (OC). It is used in notebook computers and PDAs to enable hot-swap power control compliant with PC Card Standard.
For engineers reviewing the TPS2204APWP datasheet, TPS2204APWP pinout, TPS2204APWP application, or TPS2204APWP equivalent, key selection considerations include dual-slot VCC/VPP sequencing, independent 3.3/5/12-V rail control, short-circuit response time (<10 µs for xVCC), thermal fault isolation, and compatibility with P2C 3-lead serial interface.
Technical Context
The TPS2204APWP implements two independent high-side MOSFET power switches per slot (AVCC/BVCC for VCC; AVPP/BVPP for VPP), each with dedicated current-limit sensing and thermal foldback. Its P2C serial interface (CLOCK/DATA/LATCH) configures output states via an 8-bit command word, supporting reset-driven initialization and asynchronous SHDN assertion.
UVLO circuitry monitors VI(3.3V) (trip at 2.7 V), VI(5V) (trip at 2.5 V), and VI(12V) (trip at 13.5 V), forcing Hi-Z outputs when thresholds are violated. The OC pin reports overcurrent events with 100-µA sink capability and requires external pullup; no internal pullup is provided.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| rDS(on) - 3.3V to xVCC | 85 mΩ typ @ 750 mA - ensures ≤75 mV drop at full load, meeting PC Card 5% regulation for 3.3-V rails |
| rDS(on) - 5V to xVCC | 95 mΩ typ @ 500 mA - limits voltage drop to ≤47.5 mV, preserving 5-V output regulation margin |
| Short-circuit current limit - xVCC | 1.4 A typ - sustains safe operation during card insertion faults without fuse replacement |
| Short-circuit current limit - xVPP | 200 mA typ - protects 12-V flash programming circuits from latch-up while enabling 100-mA continuous delivery |
| Thermal shutdown threshold | 135°C rising - disables all outputs until junction cools by 10°C hysteresis, preventing permanent damage |
| Propagation delay - xVCC turn-on | 0.3 ms typ @ TJ = 25°C, CL = 0.1 µF - enables fast power ramp for CardBus enumeration timing |
| OC response time | ≤3 µs for xVPP short - allows host controller to detect and isolate faults before system-level damage occurs |
Pinout & Package
TPS2204APWP is housed in a 24-pin HTSSOP (PWP) package with exposed thermal pad, optimized for PCB heat dissipation in space-constrained PC Card host designs. Pin 1 is top-left corner (marked dot); pin count follows standard HTSSOP numbering (1–24, counter-clockwise).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | 5V input | Dual 5-V supply pins for VCC distribution; must be externally tied to common 5-V source |
| 3 | DATA input | Serial data line for 8-bit command word (D0–D7); LSB-first, clocked on rising edge |
| 4 | CLOCK input | 2.5-MHz max logic clock; synchronizes DATA sampling and LATCH capture |
| 5 | LATCH input | Active-high strobe; latches DATA into control register before next CLOCK edge |
| 7, 20 | 12V input | Dual 12-V supply pins for VPP programming voltage; externally connected to single 12-V rail |
| 8 | AVPP output | Slot A VPP switched output (0/3.3/5/12 V or Hi-Z); drives card's VPP pin for flash erase/write |
| 9, 10 | AVCC output | Slot A VCC switched output (0/3.3/5 V or Hi-Z); powers card logic and interface circuitry |
| 11 | GND | Power ground reference for all internal circuits and switch return paths |
| 12 | RESET input | Active-low asynchronous reset; forces all outputs Hi-Z and discharge switches ON at power-up |
| 13, 14 | 3.3V input | Dual 3.3-V supply pins for chip bias and Slot A/B VCC generation; mandatory for operation |
| 15 | OC output | Open-drain overcurrent flag; sinks 10 mA max; requires external pullup to 3.3/5 V |
| 21 | SHDN input | Active-low shutdown; forces all outputs Hi-Z and disables internal bias; internal pullup to VI(3.3V) |
| 24 | BVPP output | Slot B VPP switched output (0/3.3/5/12 V or Hi-Z); independent control from AVPP |
| 22, 23 | BVCC output | Slot B VCC switched output (0/3.3/5 V or Hi-Z); shares same control logic as AVCC but separate FETs |
| 17, 18 | 3.3V output | Not connected internally; reserved for future variants - no functional role in TPS2204APWP |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Prevents cross-conduction between VCC/VPP rails during state transitions, eliminating shoot-through current in dual-voltage cards |
| Independent xVCC/xVPP current limiting | Each of four power outputs (AVCC/BVCC/AVPP/BVPP) has dedicated sense-FET current limit, enabling per-rail fault containment |
| P2C 3-lead serial interface | Reduces host GPIO count vs parallel control; supports daisy-chaining multiple devices using shared CLOCK/DATA with individual LATCH |
| Thermal shutdown with hysteresis | 135°C trip + 10°C hysteresis prevents thermal oscillation during sustained overload, ensuring reliable recovery without manual intervention |
| UVLO per input rail | Separate undervoltage lockout on 3.3V, 5V, and 12V inputs ensures safe Hi-Z state if any supply falls below specification, preventing partial-power faults |
Applications
| Notebook Computer PC Card Slot | Desktop PCMCIA Host Adapter |
|---|---|
Use Scenario: Hot-plug insertion of wireless LAN or modem PC Cards into battery-powered notebooks. IC Role / Device Role / Timing Role: Dual-slot power sequencer managing independent 3.3-V/5-V/12-V enable timing, reset coordination, and overcurrent isolation per slot. Use Value: Enables true plug-and-play without system reboot; OC pin alerts BIOS to disable faulty card before battery drain or thermal damage occurs. |
Use Scenario: Desktop add-in card supporting legacy PC Cards requiring 12-V VPP for flash programming. IC Role / Device Role / Timing Role: High-side power switch delivering regulated 3.3-V/5-V VCC and programmable 12-V VPP under PCI bus controller command. Use Value: Eliminates discrete fuses and relays; 85-mΩ rDS(on) minimizes voltage drop across long backplane traces, maintaining PC Card spec compliance. |
| PDA Expansion Slot | Digital Camera Memory Card Interface |
Use Scenario: Compact handheld PDA accepting SDIO or CompactFlash cards with mixed 3.3-V and 5-V signaling. IC Role / Device Role / Timing Role: Low-quiescent-current (2 µA shutdown) dual-slot power manager with break-before-make sequencing to prevent bus contention. Use Value: Extends battery life via ultra-low shutdown current; independent VCC/VPP control allows simultaneous 3.3-V card and 5-V legacy card operation. |
Use Scenario: High-reliability digital camera using CompactFlash for image storage with firmware update capability. IC Role / Device Role / Timing Role: VPP programming switch enabling in-system 12-V flash erase/write cycles without external HV generator. Use Value: Integrates 12-V VPP switching with thermal protection, preventing camera lockup during firmware updates caused by card overcurrent. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-slot PC Card power-switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2206ADB | 30-pin SSOP package; includes RESET pin with internal pullup (TPS2204APWP uses external RESET pullup) | Designed for larger PCB footprints where thermal pad is not required; lacks PowerPAD® thermal enhancement | Select when board layout constraints favor SSOP over HTSSOP and thermal dissipation <1 W is sufficient |
| TPS2206ADAP | 32-pin TSSOP with PowerPAD®; adds MODE pin for independent VPP switching control (not present on TPS2204APWP) | Supports asymmetric VPP assignment (e.g., 12-V only on Slot A); TPS2204APWP provides fixed dual-VPP | Choose when flexible VPP routing or higher thermal performance (>3 W) is needed for industrial host designs |
Compared with TPS2204APWP, TPS2206ADB offers identical functionality in a larger SSOP package without thermal pad, while TPS2206ADAP adds MODE-controlled VPP flexibility and superior thermal handling-neither is pin-compatible, but both share the same P2C serial protocol and electrical specs for VCC/VPP switching.
Availability
TPS2204APWP is available at Aetrix Electronics and suitable for notebook computers, PDAs, and digital cameras requiring stable component supply for PC CardBus™ power management in commercial temperature range (−40°C to 85°C).
Supply support for TPS2204APWP 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 TPS22xx family was designed specifically for PC Card and CardBus™ host systems, integrating VCC/VPP switching, fault protection, and serial control to replace discrete MOSFETs, fuses, and logic in portable computing platforms.
FAQ
What is the maximum continuous output current supported by each xVCC channel of the TPS2204APWP?
The TPS2204APWP supports 1 A continuous output current per xVCC channel (AVCC and BVCC) at TJ = 100°C, with current limiting set to 1.4 A typical. This meets the PC Card specification for peak and average current requirements while maintaining thermal stability in compact host designs.
Does the TPS2204APWP support independent control of VCC and VPP for each slot?
Yes, the TPS2204APWP provides fully independent control of AVCC/AVPP (Slot A) and BVCC/BVPP (Slot B) through its 8-bit P2C serial interface. Each output can be enabled, disabled, or placed in high-impedance state individually, enabling mixed-voltage card configurations.
How does the OC pin function on the TPS2204APWP, and what external components are required?
The OC pin on the TPS2204APWP is an open-drain output that pulls low during overcurrent conditions on any xVCC or xVPP channel. An external pullup resistor (typically 4.7 kΩ to 3.3 V or 5 V) is mandatory; the pin sinks up to 10 mA and interfaces directly with microcontroller GPIO interrupt inputs.
What is the purpose of the SHDN pin on the TPS2204APWP, and how does it differ from the RESET pin?
The SHDN pin on the TPS2204APWP is an asynchronous active-low input that forces all power outputs into high-impedance state without affecting internal register contents. Unlike RESET-which clears registers and activates discharge switches-SHDN retains configuration and provides rapid, reversible power gating for power-saving modes.
Can the TPS2204APWP operate with only a 3.3-V supply, or are 5-V and 12-V inputs mandatory?
The TPS2204APWP requires VI(3.3V) to be present at all times for core functionality, but VI(5V) and VI(12V) are only needed when powering 5-V or 12-V cards. If only 3.3-V cards are used, the 5-V and 12-V inputs may be left unconnected, though their absolute maximum ratings still apply.
TPS2204APWP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 24-PowerTSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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
TPS2204APWP FAQ
1.How can I place an order for TPS2204APWP through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2204APWP 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 TPS2204APWP reliable?
The price and inventory of TPS2204APWP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2204APWP is usually 5 days.
3.What payment methods are accepted for TPS2204APWP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2204APWP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2204APWP?
TPS2204APWP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2204APWP 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 TPS2204APWP?
For technical support, including TPS2204APWP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2204APWP requirements.
6.How does Aetrix verify that TPS2204APWP is sourced from the original manufacturer or authorized distributors?
All TPS2204APWP 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 TPS2204APWP meets industry standards.
7.What is the process for return or replacement of TPS2204APWP?
All TPS2204APWP units undergo pre-shipment inspection (PSI). If there is an issue with TPS2204APWP, 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 TPS2204APWP part is unused and in its original packaging.
Return procedure for TPS2204APWP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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