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Texas Instruments TPS2220BPWP
- Part No.:
- TPS2220BPWP
- Manufacturer:
- Texas Instruments
- Package:
- 24-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS2220BPWP.pdf
- Description:
- IC PWR SWITCH 4:2 24HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,492
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Product details
Overview
TPS2220BPWP from Texas Instruments is a 24-pin HTSSOP power-interface switch for single-slot PCMCIA/PC Card systems, integrating independent 3.3 V/5 V/12 V VCC and VPP switching with break-before-make sequencing, 1 A AVCC current limit, 100 mA AVPP current limit, and thermal shutdown at 135°C. It enables compliant power delivery in notebook computers and bar code scanners.
For engineers reviewing the TPS2220BPWP datasheet, TPS2220BPWP pinout, TPS2220BPWP application, or TPS2220BPWP equivalent, key selection criteria include its dual-output current-limit architecture, TTL-compatible serial control interface (CLOCK/DATA/LATCH), UVLO thresholds per rail (2.7 V for 3.3 V, 2.5 V for 5 V), and integrated discharge transistors meeting PC Card 100-ms VCC discharge requirement.
Technical Context
The TPS2220BPWP implements a serially controlled logic interface with asynchronous RESET and SHDN inputs, supporting D0–D10 command words to configure individual AVCC/AVPP output states. Its internal charge pump eliminates dependency on external 12-V supply for gate drive, enabling 3.3-V-only operation except when 12-V card power is actively requested.
Each output features dedicated current-sense FETs and thermal monitoring. The AVCC path uses two parallel 5-V input pins (1, 2) and two AVCC output pins (9, 10); AVPP uses single 12-V input (7) and single AVPP output (8). Independent VPP/VCC switching allows simultaneous 3.3-V card power and 12-V flash programming without cross-rail interference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | Dual independent switched outputs: AVCC (3.3 V/5 V) and AVPP (3.3 V/5 V/12 V) |
| Current Limit (AVCC) | 1 A typical steady-state short-circuit limit, enabling peak PC Card load compliance |
| Current Limit (AVPP) | 200 mA typical steady-state short-circuit limit, sufficient for 12-V flash programming |
| rDS(on) (3.3V→AVCC) | 110 mΩ max at TJ = 100°C, ensuring ≤110 mV drop at 1 A for PC Card 5% regulation margin |
| UVLO Threshold (3.3V) | 2.7 V nominal with 100 mV hysteresis, guaranteeing safe Hi-Z state before 3.3-V rail stabilizes |
| Quiescent Current | 140 µA typical from 3.3-V input, minimizing standby power in battery-operated hosts |
| Thermal Shutdown | 135°C rising-temperature trip with 10°C hysteresis, preventing permanent damage during sustained overload |
Pinout & Package
TPS2220BPWP is housed in a 24-pin HTSSOP (PWP) package with PowerPAD™ thermal pad, optimized for high-power dissipation (3322 mW at TA = 25°C) and surface-mount assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 - 5V | Input power supply | Parallel 5-V input pins; both must be connected to sustain full 1-A AVCC output capability |
| 7 - 12V | Input power supply | 12-V input for AVPP output; enables flash programming voltage without external regulator |
| 8 - AVPP | Switched output | Delivers 3.3 V, 5 V, or 12 V to PC Card Vpp terminals; supports independent enable/disable vs AVCC |
| 9, 10 - AVCC | Switched output | Parallel 3.3 V/5 V outputs to PC Card Vcc terminals; dual pins reduce trace resistance and voltage drop |
| 11 - GND | Power ground | Main ground reference for all power paths and internal circuitry; connects to thermal pad |
| 12 - RESET | Asynchronous control input | Active-low reset forcing all switches to Hi-Z and discharge transistors ON; internal pullup |
| 13 - 3.3V | Input power supply | Primary 3.3-V supply for chip logic and gate drive; powers internal charge pump |
| 15 - OC | Open-drain fault indicator | Active-low overcurrent flag requiring external pullup; asserts within 10 µs of fault detection |
| 21 - SHDN | Asynchronous control input | Active-low shutdown disabling all outputs and reducing quiescent current to ≤1 µA |
| 3 - DATA 4 - CLOCK 5 - LATCH |
Serial interface inputs | 3-wire TTL-compatible interface accepting 11-bit command word (D0–D10) for precise output control |
| 6, 14, 16–20, 22–24 | No connection | NC pins; must remain unconnected per datasheet to avoid functional interference |
Key Features
| Feature | Design Value |
|---|---|
| Independent VPP/VCC switching | Enables concurrent 3.3-V card operation and 12-V flash programming without rail coupling or sequencing delays |
| Integrated discharge transistors | Forces AVCC/AVPP to <0.8 V within 100 ms, satisfying PC Card power-reset requirement without external components |
| Charge-pump gate drive | Eliminates need for external 12-V bias supply; reduces host system BOM count and improves battery life |
| Break-before-make switching | Prevents momentary short between VCC and VPP rails during voltage transitions, avoiding card latch-up |
| Per-rail UVLO monitoring | Separate undervoltage lockout on 3.3-V (2.7 V) and 5-V (2.5 V) inputs ensures safe power-up sequencing per PCMCIA spec |
Applications
| Notebook Computer PCMCIA Slot | Bar Code Scanner Host Interface |
|---|---|
Use Scenario: Embedded x86 host controller manages hot-plug insertion of memory, modem, or GPS PC Cards. IC Role / Device Role / Timing Role: Primary power interface switch controlling VCC/VPP delivery, discharge, and fault reporting via OC pin. Use Value: Meets PC Card Standard timing (100-ms discharge), current limits (1 A AVCC), and voltage regulation (≤110 mV drop), eliminating discrete fuses and external discharge circuits. |
Use Scenario: Portable industrial scanner uses PC Card slot for firmware updates or optional wireless modules. IC Role / Device Role / Timing Role: Dual-rail power manager enabling 3.3-V operation by default and on-demand 12-V activation for flash reprogramming. Use Value: Charge-pump architecture reduces 3.3-V supply loading during 12-V bursts, extending battery runtime by >15% versus 12-V-dependent alternatives. |
| Digital Camera PC Card Adapter | Set-Top Box Expansion Module |
Use Scenario: DSLR camera adds storage or connectivity via PC Card slot using compact embedded host. IC Role / Device Role / Timing Role: Single-chip power sequencer handling 3.3-V/5-V negotiation, VCC discharge, and overcurrent isolation. Use Value: Integrated UVLO (2.7 V on 3.3V pin) prevents partial power-up during brownout, avoiding card corruption during field use. |
Use Scenario: Consumer STB supports optional PC Card-based conditional access or streaming modules. IC Role / Device Role / Timing Role: Fault-tolerant power switch providing isolated AVCC/AVPP with thermal shutdown and OC reporting to main SoC. Use Value: 135°C thermal trip with 10°C hysteresis ensures reliable recovery after transient overloads, reducing field returns by eliminating thermal runaway failures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power-interface switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2220BDB | Same die in 24-pin SSOP (DB) package; lower power dissipation (890 mW vs 3322 mW), no PowerPAD™ thermal enhancement | Suitable for low-power or space-constrained designs where thermal headroom is adequate; not recommended for continuous 1-A AVCC loads at 85°C ambient | Select TPS2220BDB only if board layout lacks thermal pad area and worst-case power dissipation remains below 489 mW. |
| TPS2220ADB | Legacy A-version with identical pinout but different VPP/VCC independence logic; pin 20 is NC in TPS2220B but functional in TPS2220A | Lacks TPS2220B's enhanced 12-V charge-pump efficiency and has higher 3.3-V quiescent current (200 µA vs 140 µA) | TPS2220ADB is obsolete and unsupported; TPS2220BPWP provides superior battery life and thermal performance for new designs. |
Compared with TPS2220BDB and TPS2220ADB, the TPS2220BPWP delivers 3.7× higher thermal power handling via PowerPAD™, 30% lower quiescent current, and robust 12-V gate drive independence-making it the sole choice for thermally demanding, battery-sensitive PCMCIA host designs.
Availability
TPS2220BPWP is available at Aetrix Electronics and suitable for notebook computers, bar code scanners, digital cameras, and set-top boxes requiring stable component supply with guaranteed long-term manufacturability and PC Card compliance.
Supply support for TPS2220BPWP 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 and embedded processing technologies, with decades of expertise in power management ICs for computing and portable electronics.
The TPS2220B product line was designed specifically for PCMCIA-compliant power interface applications, delivering integrated VCC/VPP switching, fault protection, and serial control to replace discrete MOSFETs, fuses, and discharge circuits in host controllers.
FAQ
What is the maximum continuous output current supported by TPS2220BPWP on the AVPP rail?
The TPS2220BPWP supports a maximum continuous output current of 100 mA on the AVPP rail, with a typical short-circuit current limit of 200 mA. This rating is validated across the full operating temperature range (–40°C to 85°C ambient) and aligns with PC Card requirements for 12-V flash programming loads. Exceeding 100 mA continuously risks thermal shutdown activation due to power dissipation limits in the HTSSOP package.
Does TPS2220BPWP require an external 12-V supply to operate its internal gate drivers?
No, the TPS2220BPWP does not require an external 12-V supply for gate driver operation. It uses an internal charge pump powered from the 3.3-V input (pin 13) to generate necessary gate voltages. The 12-V input (pin 7) is used solely to source current to the AVPP output; when 12-V is present and requested, the charge pump draws drive current from that rail instead of the 3.3-V rail, improving system efficiency.
How does TPS2220BPWP meet the PC Card 100-ms VCC discharge requirement?
The TPS2220BPWP meets the PC Card 100-ms VCC discharge requirement using integrated discharge transistors on both AVCC (pins 9, 10) and AVPP (pin 8) outputs. When RESET or SHDN is asserted, these transistors actively pull outputs to ground, discharging attached capacitive loads to <0.8 V within 100 ms-even with up to 150 µF capacitance-as verified in the datasheet's Figure 19 and Application Information section.
What is the function of pin 20 on the TPS2220BPWP?
Pin 20 on the TPS2220BPWP is a no-connect (NC) terminal with no internal connection. It must remain unconnected in the PCB layout. This differs from the earlier TPS2220A version, where pin 20 serves a functional role; the TPS2220BPWP datasheet explicitly states "NC − No internal connection" for pin 20, confirming its exclusion from all electrical paths.
Can TPS2220BPWP support mixed 3.3-V/5-V PC Card negotiation sequences?
Yes, the TPS2220BPWP supports mixed 3.3-V/5-V PC Card negotiation as defined in the PCMCIA standard. Its independent VPP/VCC control allows the host to first apply 5 V to detect card type, then discharge VCC below 0.8 V using internal transistors before applying 3.3 V-ensuring safe power reset for 3.3-V-only cards. UVLO thresholds (2.7 V on 3.3V pin, 2.5 V on 5V pin) enforce correct sequencing during ramp-up.
TPS2220BPWP 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:
- 2
- Ratio - Input:Output:
- 4:2
- 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
TPS2220BPWP FAQ
1.How can I place an order for TPS2220BPWP through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2220BPWP 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 TPS2220BPWP reliable?
The price and inventory of TPS2220BPWP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2220BPWP is usually 5 days.
3.What payment methods are accepted for TPS2220BPWP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2220BPWP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2220BPWP?
TPS2220BPWP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2220BPWP 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 TPS2220BPWP?
For technical support, including TPS2220BPWP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2220BPWP requirements.
6.How does Aetrix verify that TPS2220BPWP is sourced from the original manufacturer or authorized distributors?
All TPS2220BPWP 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 TPS2220BPWP meets industry standards.
7.What is the process for return or replacement of TPS2220BPWP?
All TPS2220BPWP units undergo pre-shipment inspection (PSI). If there is an issue with TPS2220BPWP, 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 TPS2220BPWP part is unused and in its original packaging.
Return procedure for TPS2220BPWP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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