Texas Instruments TPS2206IDAPR

Overview

TPS2206IDAPR from Texas Instruments is a dual-slot PC Card power-interface switch IC that integrates MOSFETs, logic control, current limiting, and thermal protection for 3.3-V, 5-V, and 12-V card power distribution. It supports break-before-make switching, features 110-mΩ rDS(on) for 3.3-V VCC outputs, delivers up to 1 A at 3.3 V and 150 mA at 12 V, and enables system reset via dual-active RESET inputs - used in notebook computers and PDAs for compliant PCMCIA power management.

For engineers reviewing the TPS2206IDAPR datasheet, TPS2206IDAPR pinout, TPS2206IDAPR application, or TPS2206IDAPR equivalent, key selection considerations include its 32-pin TSSOP (DAP) package, P2C serial interface compatibility with CardBus controllers, 3.3-V low-voltage mode operation without 5-V bias, integrated overcurrent reporting on OC pin, and dual-slot independent VCC/VPP switching capability.

Technical Context

The TPS2206IDAPR implements a LinBiCMOS-based dual-channel power switch architecture with independent control of two PC Card slots (A and B), each supporting selectable VCC (0/3.3/5 V) and VPP (0/3.3/5/12 V) outputs. Its P2C 3-wire serial interface (DATA/CLOCK/LATCH) enables configuration and status reporting without external address decoding logic.

It incorporates internal charge-pump circuitry to eliminate dependency on external 12-V supply for gate drive - allowing 12-V input to be disabled except during flash programming - and uses dual RESET inputs (active-high on Pin 7, active-low on Pin 14) to synchronize card initialization with host platform reset sequences.

Key Specifications

Pinout & Package

TPS2206IDAPR is housed in a 32-pin Thin Shrink Small Outline Package (TSSOP), designated DAP, with exposed thermal pad for enhanced heat dissipation. The package measures 7.0 mm × 4.4 mm × 1.2 mm and is RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2202IDB, TPS2206IDAPR adds 3.3-V-only operation and eliminates VDD dependency, while TPS2206IDBR offers footprint compatibility with older SSOP layouts but sacrifices the DAP package's superior thermal dissipation and smaller footprint.

Availability

TPS2206IDAPR is available at Aetrix Electronics and suitable for notebook computers, PDAs, digital cameras, and bar-code scanners requiring stable component supply, long-term industrial lifecycle support, and compliance with PCMCIA power interface standards.

Supply support for TPS2206IDAPR 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, delivering analog, embedded processing, and connectivity products for industrial, automotive, and personal electronics markets.

The TPS2206 series belongs to TI's PC Card interface power management product line, designed specifically to replace discrete MOSFET-based solutions in dual-slot CardBus systems while meeting PCMCIA mechanical, electrical, and timing specifications.

FAQ

What is the function of the OC pin on the TPS2206IDAPR?

The OC (Overcurrent) pin on the TPS2206IDAPR is an open-drain output that asserts low when any VCC or VPP output exceeds its current limit - indicating overcurrent on either slot A or B. This signal allows the host microprocessor to detect faults in real time and initiate diagnostics or user alerts. In the TPS2206IDAPR, OC remains active until the overcurrent condition clears and thermal recovery completes, ensuring robust fault handling without manual fuse replacement.

Does the TPS2206IDAPR require an external 12-V supply to operate?

No, the TPS2206IDAPR does not require an external 12-V supply to operate. Its internal charge pump generates necessary gate-drive voltages from the 3.3-V or 5-V input rails, allowing the 12-V input (Pin 8/25) to be disabled except during flash-memory programming. This feature significantly extends battery life in portable systems. If unused, the 12-V input must remain floating - not grounded - to prevent malfunction of the TPS2206IDAPR.

How does the TPS2206IDAPR support 3.3-V-only system operation?

The TPS2206IDAPR supports true 3.3-V-only operation by deriving all internal bias current from the 3.3-V input pins (16/17/18) when the 5-V input is absent (VI(5V) = 0). In this mode, it delivers 3.3-V VCC to both slots and disables 5-V and 12-V outputs. The TPS2206IDAPR maintains full functionality including RESET, OC reporting, and serial interface control - enabling low-power sleep and pager modes without requiring auxiliary voltage rails.

What is the purpose of the dual RESET inputs on the TPS2206IDAPR?

TPS2206IDAPR provides two independent RESET inputs - Pin 7 (active-high) and Pin 14 (active-low) - to accommodate different host controller logic families without level-shifting circuitry. Either input, when asserted, grounds all VCC and VPP outputs to discharge residual card voltage and ensure clean initialization. The dual configuration eliminates the need for external inverters or pull-up/pull-down resistors, simplifying design integration across diverse platforms using the TPS2206IDAPR.

Can the TPS2206IDAPR replace the TPS2202IDB in an existing design?

The TPS2206IDAPR is backward compatible with the TPS2202IDB in functional behavior but not pin-to-pin due to package (32-pin TSSOP vs. 30-pin SSOP) and pin assignment differences - notably the absence of VDD and APWR_GOOD/BPWR_GOOD pins in the TPS2206IDAPR. To replace TPS2202IDB, PCB layout revision is required. However, the TPS2206IDAPR offers advantages including 3.3-V-only operation, lower quiescent current, and elimination of external 12-V bias - making it suitable for upgraded, power-optimized designs.