Texas Instruments TPS2214ADB

Overview

TPS2214ADB from Texas Instruments is a dual-channel PC Card power-interface switch IC designed for S-CARD and M-CARD power management in CableCARD™ systems. It integrates 3.3-V/5-V/12-V xVCC and xVPP switching, delivers 750 mA xVCC output current at 70°C, features 60-mΩ typical rDS(on) for 3.3-V xVCC, and provides short-circuit and thermal protection.

For engineers reviewing the TPS2214ADB datasheet, TPS2214ADB pinout, TPS2214ADB application, or TPS2214ADB equivalent, this device supports independent xVPP programming, break-before-make switching, 3.3-V low-voltage mode operation without 5-V supply, and TTL-logic-compatible serial control via CLOCK/DATA/LATCH.

Technical Context

The TPS2214ADB implements two independent high-side power switches per channel (AVCC/AVPP and BVCC/BVPP), each with programmable voltage selection (3.3 V, 5 V, 12 V, or GND) and internal current limiting. Its serial interface uses a 3-wire TTL-compatible protocol (CLOCK, DATA, LATCH) to configure output states, enabling precise sequencing and fault isolation.

It incorporates internal power-on reset, 150-kΩ pulldown on MODE and RESET pins, 150-kΩ pullup on STBY and RESET pins, and thermal shutdown at 155°C with 10°C hysteresis. Standby mode reduces all current limits to 50 mA (typical), supporting low-power sleep states.

Key Specifications

Pinout & Package

TPS2214ADB is housed in a 24-pin SSOP (DB) package with exposed pad not electrically connected. Pin functions are validated per SLVS267C Rev FEBRUARY 2008, DB-24 top-view layout.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PC Card power-switching applications.

Compared with TPS2214ADB, TPS2216ADB(R) offers extended pin compatibility for legacy designs but requires PCB redesign due to 30-pin DB footprint, while TPS2214ADAP(R) delivers superior thermal performance in space-constrained applications without altering functional behavior.

Availability

TPS2214ADB is available at Aetrix Electronics and suitable for notebook computers, desktop PCMCIA adapters, and PDA expansion slots requiring stable component supply across extended product lifecycles.

Supply support for TPS2214ADB 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 company specializing in analog, embedded processing, and connectivity technologies with over 50 years of power management leadership.

The TPS2214A product line was engineered specifically to meet PCMCIA and CableCARD™ power interface standards, delivering integrated, fuseless, and thermally protected switching for dual PC Card host systems.

FAQ

What is the function of the MODE pin on the TPS2214ADB?

The MODE pin on the TPS2214ADB configures device behavior: pulled high, it operates as a TPS2214A; pulled low or floating, it defaults to TPS2216A mode. The pin has an internal 150-kΩ pulldown resistor, so no external pull is required for TPS2214A operation. This allows single hardware design to support both variants via simple strap option - critical for platform reuse across multiple host generations. The TPS2214ADB part number corresponds to the TPS2214A functional variant.

Does the TPS2214ADB support independent control of AVPP and BVPP outputs?

Yes, the TPS2214ADB supports independent xVPP programming via its 3-wire serial interface (CLOCK/DATA/LATCH). Each xVPP output (AVPP on pin 8, BVPP on pin 19) can be set to 3.3 V, 5 V, 12 V, GND, or high-impedance independently of the other and independently of corresponding xVCC outputs. This capability is explicitly confirmed in the functional description and timing diagrams of SLVS267C, enabling mixed-voltage card configurations - for example, AVPP = 12 V for flash programming while BVPP = 5 V for I/O peripherals.

What is the maximum continuous output current for xVCC and xVPP on the TPS2214ADB?

The TPS2214ADB delivers up to 750 mA continuous output current on each xVCC channel (AVCC and BVCC) at TA = 70°C, and up to 200 mA continuous on each xVPP channel (AVPP and BVPP) at TA = 70°C. These values are specified in the Recommended Operating Conditions table of SLVS267C and verified across temperature. At lower ambient temperatures (e.g., 25°C), derating is not required, and peak currents may exceed these values briefly under short-circuit protection response - but sustained operation must remain within these limits to maintain regulation and thermal safety.

How does the TPS2214ADB implement thermal protection?

The TPS2214ADB incorporates thermal shutdown that activates at a junction temperature of 155°C (typical), with 10°C hysteresis ensuring re-enablement at ~145°C. This protection is internal, not dependent on external sensors, and operates independently per die section. When triggered, all outputs disable and OC pin asserts low. Recovery is automatic upon cooling - no reset pulse required. This behavior is documented in the Electrical Characteristics table and confirmed in Figure 4–7 of SLVS267C, where thermal events correlate directly with OC assertion and output disable.

Can the TPS2214ADB operate without a 5-V supply?

Yes, the TPS2214ADB supports true 3.3-V-only operation via its dedicated 3.3V input pins (13, 14). When VI(5V) = 0 V, the device uses the 3.3-V rail for internal logic and xVCC switching, enabling 3.3-V xVCC outputs and 3.3-V xVPP outputs. This low-voltage mode is explicitly defined in the datasheet description and validated in electrical characteristics tables (e.g., rDS(on) and IO specs at VI(5V) = 0 V). It is essential for battery-powered sleep modes where 5-V is disabled but 3.3-V remains active - a key differentiator versus earlier PC Card switches.