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Texas Instruments TPS2220ADBR
- Part No.:
- TPS2220ADBR
- Manufacturer:
- Texas Instruments
- Package:
- 24-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
TPS2220ADBR.pdf
- Description:
- IC PWR SWITCH 1:1 24SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,594
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Product details
Overview
TPS2220ADBR 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, features 110 mΩ typical rDS(on) at 5 V → xVCC, 1.3 Ω typical rDS(on) at 3.3/5 V → xVPP, 140 µA typical quiescent current from 3.3-V input, and thermal shutdown at 135°C. It enables compliant power management in notebook computers and digital cameras.
For engineers reviewing the TPS2220ADBR datasheet, TPS2220ADBR pinout, TPS2220ADBR application, or TPS2220ADBR equivalent, key selection criteria include its 24-pin HTSSOP (DB) package, break-before-make switching, independent VPP/VCC control, and support for PC Card Standard-compliant current limiting and UVLO thresholds.
Technical Context
The TPS2220ADBR implements a dual-channel analog power switch architecture with separate control logic for AVCC/AVPP outputs, using internal MOSFETs with integrated current-sense and thermal trip circuitry. Its serial interface (CLOCK/DATA/LATCH) configures output states without requiring external microcontroller GPIO expansion.
It supports simultaneous 3.3-V, 5-V, and 12-V input rails, with dedicated UVLO detection per rail (2.7 V threshold on 3.3V pin, 2.5 V on 5V pin), and provides open-drain OC reporting with 10 mA sink capability. Power-on reset asserts RESET low until all supply rails stabilize above POR threshold (1.7 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| rDS(on) (5V→xVCC) | 110 mΩ typical - ensures ≤0.083 V drop at 750 mA load, meeting PC Card 5% regulation budget |
| rDS(on) (3.3/5V→xVPP) | 1.3 Ω typical - supports 50 mA VPP loads with <0.065 V drop, sufficient for flash programming |
| Quiescent Current | 140 µA typical from 3.3-V input - enables low-power standby in battery-operated notebooks |
| Current Limit Response | 10 µs typical - isolates faults before system-level damage occurs during short-circuit events |
| Thermal Shutdown | 135°C rising temperature - protects against sustained overload in compact card slots |
| UVLO Threshold (3.3V) | 2.7 V nominal - disables all switches if main 3.3-V rail sags below functional level |
| Operating Temp Range | –40°C to 85°C ambient - validated for industrial-grade embedded computing environments |
Pinout & Package
TPS2220ADBR is housed in a 24-pin HTSSOP (DB) package with exposed thermal pad, optimized for surface-mount assembly and thermal dissipation in space-constrained PCMCIA host designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 (5V) | 5-V input supply | Primary power source for 5-V card functions; must be ≥3 V for basic operation |
| 8 (AVPP) | Switched 12-V output | Delivers regulated 12 V to card Vpp pins; disabled if 12V input is absent or below 7 V |
| 9, 10 (AVCC) | Switched 3.3/5-V output | Provides selectable 3.3 V or 5 V to card Vcc pins; Hi-Z when UVLO active |
| 11 (GND) | Power ground | Common return for all power paths; requires low-impedance PCB plane connection |
| 12 (RESET) | Active-low reset output | Open-drain signal pulled low during power-on reset or UVLO fault; requires external pullup |
| 13 (3.3V) | 3.3-V input supply | Supplies internal logic and enables full device operation; mandatory for all functions |
| 15 (OC) | Overcurrent fault indicator | Open-drain output sinks 10 mA when any switch exceeds current limit; needs external pullup |
| 21 (SHDN) | Active-low shutdown control | Disables all outputs and reduces quiescent current to <2 µA; internal pullup enabled |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Prevents VCC/VPP rail contention during state transitions, eliminating cross-conduction risks in hot-plug scenarios |
| Independent VPP/VCC control | Enables selective activation of programming voltage (VPP) without powering main logic (VCC), reducing standby leakage |
| Serial configuration interface | Reduces required host GPIO count to only three lines (CLOCK/DATA/LATCH), simplifying integration with minimal MCU resources |
| Integrated discharge resistors | 0.7 kΩ typical at xVCC and 0.4 kΩ at xVPP - safely bleed residual charge post-shutdown, meeting PC Card safety requirements |
| PC Card Standard compliance | Meets peak/average current, timing, and protection requirements defined in PCMCIA specification for CardBus hosts |
Applications
| PCMCIA Notebook Host | Digital Camera Card Slot |
|---|---|
|
Use Scenario: Embedded CardBus controller managing hot-pluggable memory or modem cards in portable notebooks. IC Role / Device Role / Timing Role: Primary power switch enabling/disabling 3.3 V, 5 V, and 12 V to each card socket under software control via serial interface. Use Value: Eliminates need for discrete fuses and external regulators while ensuring PC Card Standard–compliant current limiting and fast fault response (<10 µs). |
Use Scenario: Compact digital camera supporting CF/PCMCIA memory cards with automatic power sequencing. IC Role / Device Role / Timing Role: Dual-rail power manager delivering 3.3 V for card logic and 12 V for flash erase/program cycles on demand. Use Value: Reduces BOM count by integrating two independent VCC/VPP switches and UVLO monitoring into one 24-pin package. |
| Set-Top Box Expansion Slot | Industrial PDA Docking Station |
|
Use Scenario: Consumer set-top box with optional PC Card–based conditional access or DVB-T tuner modules. IC Role / Device Role / Timing Role: Isolated power gate preventing backfeed between host and card during insertion/removal; OC pin signals faults to host CPU. Use Value: Enables safe hot-swap operation with no risk of damaging host power supplies or card components due to misalignment or transient surges. |
Use Scenario: Ruggedized PDA docking cradle providing PCMCIA connectivity for legacy peripherals in field-deployed equipment. IC Role / Device Role / Timing Role: Robust power interface with thermal shutdown and overcurrent protection operating across –40°C to 85°C ambient range. Use Value: Guarantees reliable card power delivery in uncontrolled thermal environments where discrete solutions would require additional heatsinking or derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CardBus power-switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2223ADBR | Dual-slot variant with identical pinout but adds BVCC/BVPP outputs; lacks 12-V support on AVPP path | Designed for two-card systems; not suitable for single-slot designs requiring 12-V VPP | Select TPS2220ADBR when only one PC Card slot and full 12-V VPP capability are required |
| TPS2224ADBR | Dual-slot with 12-V support on both AVPP and BVPP; faster current-limit response time (3 µs vs. 10 µs) | Targeted at high-reliability dual-socket hosts needing tighter fault containment | Choose TPS2224ADBR only if dual-slot support and sub-5-µs fault response are mandatory design requirements |
Compared with TPS2223ADBR and TPS2224ADBR, the TPS2220ADBR offers optimal cost and layout efficiency for single-socket implementations, avoids unnecessary BVCC/BVPP routing complexity, and retains full 12-V VPP functionality critical for legacy flash-based PC Cards.
Availability
TPS2220ADBR is available at Aetrix Electronics and suitable for notebook computers, digital cameras, set-top boxes, and industrial PDAs requiring stable component supply with guaranteed long-term lifecycle support.
Supply support for TPS2220ADBR 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 and interface ICs.
The TPS2220A family was engineered specifically for PCMCIA-compliant CardBus host controllers, addressing stringent requirements for multi-rail sequencing, hot-swap safety, and integrated protection in portable computing platforms.
FAQ
What is the primary function of the TPS2220ADBR in a CardBus system?
The TPS2220ADBR serves as a single-slot CardBus power-interface switch that controls distribution of 3.3 V, 5 V, and 12 V to a PC Card socket. It integrates dual VCC/VPP switching paths, current limiting, thermal protection, and serial configuration logic-enabling compliant, safe, and software-controllable power delivery without external discrete components. The TPS2220ADBR replaces multiple discrete MOSFETs, sense resistors, and protection ICs in legacy designs.
Does the TPS2220ADBR support 12-V output on both VCC and VPP rails?
No. The TPS2220ADBR delivers 12 V only on the AVPP output (pin 8); its AVCC outputs (pins 9, 10) are limited to 3.3 V or 5 V. This matches PC Card Standard requirements where Vpp is used for flash programming and Vcc powers logic. The TPS2220ADBR does not provide 12-V switching to VCC rails-only the dedicated AVPP path supports 12 V, and only when the 12V input pins (7, 20) are properly supplied and within 7 V to 13.5 V.
How does the TPS2220ADBR handle undervoltage lockout (UVLO)?
The TPS2220ADBR implements independent UVLO on each input rail: the 3.3V pin triggers full shutdown below 2.7 V (with 100 mV hysteresis), while the 5V pin disables only 5-V-related outputs below 2.5 V. If the 3.3V supply drops below 1.7 V, the internal power-on reset (POR) asserts RESET low and opens all switches. These thresholds ensure robust operation during brownout conditions without false triggering, and are fully specified in the TPS2220ADBR datasheet.
Can the TPS2220ADBR be used in dual-slot CardBus designs?
No-the TPS2220ADBR is explicitly a single-slot device. Its pinout provides only AVCC/AVPP outputs (no BVCC/BVPP), and its internal logic supports only one serial configuration word. For dual-slot applications, TI specifies the TPS2223A (no 12-V on AVPP), TPS2224A (12-V on both AVPP/BVPP), or TPS2226A (30-pin variant). Using TPS2220ADBR in a dual-slot design would require duplicating the IC and synchronizing control signals externally, violating its intended use case and increasing BOM cost.
What is the role of the OC (overcurrent) pin on the TPS2220ADBR?
OC is an open-drain output that pulls low whenever any switched output (AVCC or AVPP) exceeds its current limit-1 A for VCC paths or 300 mA for VPP paths. It requires an external pullup resistor (typically 10 kΩ to 3.3 V) and provides immediate fault indication to the host processor. The TPS2220ADBR does not auto-retry after OC assertion; recovery requires either cycling SHDN or resetting the serial interface. This behavior ensures deterministic fault handling in safety-critical applications.
TPS2220ADBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 24-SSOP (0.209", 5.30mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-SSOP
TPS2220ADBR FAQ
1.How can I place an order for TPS2220ADBR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2220ADBR 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 TPS2220ADBR reliable?
The price and inventory of TPS2220ADBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2220ADBR is usually 5 days.
3.What payment methods are accepted for TPS2220ADBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2220ADBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2220ADBR?
TPS2220ADBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2220ADBR 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 TPS2220ADBR?
For technical support, including TPS2220ADBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2220ADBR requirements.
6.How does Aetrix verify that TPS2220ADBR is sourced from the original manufacturer or authorized distributors?
All TPS2220ADBR 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 TPS2220ADBR meets industry standards.
7.What is the process for return or replacement of TPS2220ADBR?
All TPS2220ADBR units undergo pre-shipment inspection (PSI). If there is an issue with TPS2220ADBR, 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 TPS2220ADBR part is unused and in its original packaging.
Return procedure for TPS2220ADBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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