Texas Instruments TPS2223APWPR

Overview

TPS2223APWPR from Texas Instruments is a dual-slot CardBus™ power-interface switch for PCMCIA host controllers, integrating independent 3.3 V and 5 V switching for two card sockets with fast current-limit response (10 µs), thermal shutdown (135°C), and 140-µA typical quiescent current. It supports break-before-make sequencing, power-on reset, and TTL-compatible serial control (CLOCK/DATA/LATCH) in notebook computers and digital cameras.

For engineers reviewing the TPS2223APWPR datasheet, TPS2223APWPR pinout, TPS2223APWPR application, or TPS2223APWPR equivalent, this device delivers verified dual-voltage (3.3 V/5 V) power management per PC Card Standard, with confirmed r_DS(on) ≤110 mΩ at 750 mA (3.3 V to xVCC), short-circuit reporting via open-drain OC pin, and HTSSOP-24 package compatibility.

Technical Context

The TPS2223APWPR implements two independent high-side power switches per slot-AVCC/BVCC for 3.3 V/5 V VCC outputs and AVPP/BVPP for VPP outputs-with no 12 V support (pins 7 and 20 are NC). Its control logic accepts serial 11-bit commands via CLOCK/DATA/LATCH to configure voltage selection, enable/disable, and discharge states.

UVLO thresholds are set at 2.4 V (3.3 V rail) and 2.3 V (5 V rail); POR asserts RESET internally below 1.7 V. Current limiting is implemented per switch with steady-state limits of 1 A (xVCC) and 200 mA (xVPP), and thermal protection triggers at 135°C with 10°C hysteresis.

Key Specifications

Pinout & Package

TPS2223APWPR is packaged in a 24-pin HTSSOP (PWP) with exposed thermal pad, 0.65 mm pitch, and 7.8 mm × 4.4 mm footprint. Pin 1 is marked by a dot; pin numbering follows standard counter-clockwise convention from top-left corner.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-slot CardBus power management applications.

Compared with TPS2224APWPR and TPS2226APWPR, the TPS2223APWPR provides the minimal dual-slot solution with no 12 V overhead and smallest HTSSOP-24 footprint-ideal for cost-sensitive, size-constrained notebook and portable host designs where 12 V VPP is unnecessary.

Availability

TPS2223APWPR is available at Aetrix Electronics and suitable for notebook computer CardBus hosts, digital camera PCMCIA interfaces, and industrial PDA expansion modules requiring stable component supply, long-term lifecycle support, and TI-qualified automotive-grade reliability.

Supply support for TPS2223APWPR 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 leadership in power management ICs for computing and communications infrastructure.

The TPS222x family was designed specifically for PCMCIA/CardBus host controllers, delivering integrated dual-slot power switching, serial configuration, and robust fault protection to replace discrete MOSFETs, fuses, and supervisors in portable and embedded systems.

FAQ

What is the maximum supported clock frequency for the serial interface of the TPS2223APWPR?

The TPS2223APWPR serial interface supports a maximum clock frequency of 2.5 MHz, as specified in the Recommended Operating Conditions table. This allows reliable command transmission within tight timing windows-data setup and hold times are both 100 ns, and latch-to-clock delay is 100 ns. The interface uses positive-edge clocking with LSB-first data order, and all timing parameters are guaranteed across the full –40°C to 85°C operating range. Using 2.5 MHz enables sub-microsecond command execution for rapid power state changes in the TPS2223APWPR.

Does the TPS2223APWPR support 12 V on its VPP outputs?

No, the TPS2223APWPR does not support 12 V on its AVPP or BVPP outputs. Pins 7 and 20 are explicitly designated as No Connection (NC) for this variant, and the datasheet confirms "12-V and 5-V Supplies Can Be Disabled" and "Optimized for lower power implementation, the TPS2223A does not support 12-V switching to VPP." The device delivers only 3.3 V or 5 V to VPP outputs, matching modern CardBus cards that no longer require 12 V for flash programming. For 12 V VPP capability, TI specifies the TPS2224APWPR as the direct functional alternative.

How does the TPS2223APWPR handle overcurrent conditions, and what is the role of the OC pin?

The TPS2223APWPR detects overcurrent on any switched output (AVCC, BVCC, AVPP, BVPP) and asserts its open-drain OC pin low within 10 µs for xVCC shorts and 3 µs for xVPP shorts. The OC pin requires an external pullup resistor (typically 10 kΩ to 3.3 V) and sinks up to 10 mA. When asserted, it signals the host controller to disable the affected slot or initiate recovery-without latching, so OC returns high once the fault clears. This real-time reporting eliminates need for external current-sense amplifiers or comparators in the TPS2223APWPR design.

What is the purpose of the SHDN and RESET inputs on the TPS2223APWPR, and how do they differ?

The SHDN (pin 21) and RESET (pin 12) inputs on the TPS2223APWPR both force all power switches into high-impedance state but differ in scope and behavior. SHDN is an asynchronous active-low shutdown that disables all switching functions and reduces quiescent current to ≤2 µA per supply. RESET is also asynchronous active-low but additionally activates internal discharge paths on all outputs and resets internal logic-ensuring clean power-down before re-enabling. Both have internal pullups, but RESET takes priority during simultaneous assertion, making it essential for safe power sequencing in the TPS2223APWPR.

Can the TPS2223APWPR be used in single-slot applications, and how does it compare to the TPS2220A?

Yes, the TPS2223APWPR can be used in single-slot applications by configuring only AVCC/AVPP or BVCC/BVPP outputs while leaving the other slot disabled via serial command. However, the TPS2220A is the optimized single-slot variant-same 24-pin HTSSOP package, identical control interface, and reduced cost due to half the internal switch count. The TPS2220A shares all key specs (r_DS(on), current limits, timing) with the TPS2223APWPR but lacks BVCC/BVPP circuitry. For new single-slot designs, TPS2220A offers better value; retrofitting TPS2223APWPR is viable but incurs unnecessary silicon area and cost.