Texas Instruments TPS2202AIDF

Overview

TPS2202AIDF from Texas Instruments is a dual-slot PC Card power-interface switch with integrated VCC/Vpp switching, serial P2C interface, and active reset for PCMCIA controller systems. It delivers 3.3-V, 5-V, and 12-V switched outputs per slot (AVCC/AVPP/BVCC/BVPP), features break-before-make switching, 160-mΩ rDS(on) on 5-V VCC paths, and supports 1-A continuous output per VCC rail at 25°C.

For engineers reviewing the TPS2202AIDF datasheet, TPS2202AIDF pinout, TPS2202AIDF application, or TPS2202AIDF equivalent, this device serves as a fully integrated, thermally protected, current-limited power management solution for legacy PC Card and CardBus host platforms requiring compliant 3.3-V/5-V/12-V sequencing, power-good reporting, and fault isolation.

Technical Context

The TPS2202AIDF implements two independent, current-limited power-switch channels - one for Slot A (AVCC/AVPP/APWR_GOOD), one for Slot B (BVCC/BVPP/BPWR_GOOD) - each supporting 3.3-V, 5-V, or 12-V card power delivery via internal LinBiCMOS MOSFETs. Its P2C 3-wire serial interface (DATA/CLOCK/LATCH) enables configuration and control from a host controller without parallel bus overhead.

It integrates dual active-ground discharge FETs to meet PCMCIA 100-ms VCC discharge requirement, thermal shutdown at 150°C TJ, overcurrent detection with OC flag assertion, and selectable active-high or active-low RESET inputs that force simultaneous VCC/Vpp discharge for system-level card initialization.

Key Specifications

Pinout & Package

TPS2202AIDF is housed in a 30-pin SSOP (DF) package - surface-mount, 0.64-mm pitch, 7.2-mm × 8.2-mm body - optimized for space-constrained notebook and PDA designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2202AIDF, TPS2201AIDF provides half the slot capacity and no Slot B fault reporting, while TPS2202AIDBR offers identical performance in a mechanically distinct SSOP package - making TPS2202AIDF the sole option for new dual-slot designs requiring DF-package compatibility and maximum power dissipation headroom.

Availability

TPS2202AIDF is available at Aetrix Electronics and suitable for notebook computer bays, desktop PCMCIA expansion chassis, PDA adapters, industrial barcode scanners, and handheld terminals requiring stable component supply for legacy PC Card infrastructure.

Supply support for TPS2202AIDF 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 headquartered in Dallas, Texas, specializing in analog, embedded processing, and connectivity technologies for industrial, automotive, and computing markets.

The TPS2202AIDF belongs to TI's PC Card power management product line, engineered specifically to consolidate discrete MOSFETs, protection circuitry, and serial control into a single IC for PCMCIA-compliant host platforms - targeting space, reliability, and power-efficiency improvements in portable computing.

FAQ

What is the primary function of the TPS2202AIDF in a PC Card system?

The TPS2202AIDF serves as a dual-slot PC Card power-interface switch that manages VCC (3.3-V/5-V) and Vpp (12-V) power delivery, sequencing, and protection for two independent PC Cards. It replaces discrete MOSFETs, fuses, and control logic with a single IC, implementing break-before-make switching, active ground discharge, overcurrent detection, and thermal shutdown - all compliant with PCMCIA and CardBus standards. The TPS2202AIDF ensures safe hot-plug operation and reliable power-state transitions across mixed-voltage card configurations.

Does the TPS2202AIDF require an external 12-V supply to operate?

No - the TPS2202AIDF uses an internal charge pump powered from the 5-V VDD supply to generate gate-drive voltages, allowing the external 12-V input to be disabled except during flash-memory programming. This design reduces standby power consumption significantly. However, both 12-V input pins (Pin 7 and Pin 24) must be connected when 12-V Vpp operation is required, and the 12-V supply must meet absolute maximum rating (≤14 V) and recommended operating range (0–13.5 V) per the datasheet. The TPS2202AIDF remains fully functional for 3.3-V/5-V-only cards without any 12-V supply present.

How does the TPS2202AIDF handle reset and power sequencing for PC Cards?

The TPS2202AIDF supports two independent reset inputs (Pin 6 active-high or Pin 14 active-low) that, when asserted, simultaneously ground all four switched outputs (AVCC/AVPP/BVCC/BVPP) to fully discharge residual card capacitance - satisfying PCMCIA 3.3-V/5-V transition requirements. This synchronized discharge enables safe voltage re-sequencing and system-level card initialization. The TPS2202AIDF also implements programmable power-up timing via its P2C serial interface, allowing host controllers to define VCC/Vpp ramp order, delay, and power-good assertion windows - all without additional timing components. The TPS2202AIDF thus eliminates manual reset circuitry and external RC networks.

What protection features does the TPS2202AIDF provide against overcurrent and thermal faults?

The TPS2202AIDF provides per-rail overcurrent detection on all VCC and Vpp outputs, with current limiting that activates before damage occurs - no external fuses needed. When overcurrent is detected, the OC pin asserts low to signal the host microcontroller, and the affected output enters constant-current mode. If sustained overcurrent causes junction temperature to reach 150°C, thermal shutdown disables all outputs until cooling occurs. Recovery is automatic once TJ drops below hysteresis threshold. These protections are implemented entirely within the TPS2202AIDF die using sense-FET architecture, avoiding series resistance penalties and enabling precise, repeatable fault response. The TPS2202AIDF thus delivers robust, maintenance-free protection for mission-critical portable systems.

Can the TPS2202AIDF support both 3.3-V and 5-V PC Cards in the same system?

Yes - the TPS2202AIDF is explicitly designed for mixed-voltage PC Card systems. Each slot supports independent selection of 3.3-V or 5-V VCC output (via P2C command), and both slots can operate at different voltages simultaneously. The device meets PCMCIA specifications for 3.3-V/5-V hot-swap sequencing: it discharges residual VCC to <0.8 V before applying new voltage, preventing damage to 3.3-V logic. Vpp outputs support 12-V programming for flash cards regardless of VCC setting. The TPS2202AIDF's dual-channel architecture, per-slot power-good flags (APWR_GOOD/BPWR_GOOD), and break-before-make switching ensure full interoperability with heterogeneous card populations - a core capability confirmed in the SLVS123B datasheet.