Texas Instruments TPS2206ADBR

Overview

TPS2206ADBR from Texas Instruments is a dual-slot PC CardBus power-interface switch IC that integrates independent 3.3-V, 5-V, and 12-V switching for two PC Card sockets. It delivers low r_DS(on) (85 mΩ @ 3.3 V, 95 mΩ @ 5 V), supports break-before-make sequencing, includes thermal shutdown at 135°C, and provides open-drain overcurrent reporting (OC) - enabling robust hot-swap power control in notebook computers and PDAs.

For engineers reviewing the TPS2206ADBR datasheet, TPS2206ADBR pinout, TPS2206ADBR application, or TPS2206ADBR equivalent, key selection criteria include dual-slot VCC/VPP switching capability, 30-pin SSOP (DB) tape-and-reel packaging, integrated short-circuit current limiting (1–2 A xVCC, 120–300 mA xVPP), RESET/SHDN logic interface compatibility, and compliance with PC Card Standard voltage sequencing requirements.

Technical Context

The TPS2206ADBR implements two independent high-side power switches per slot (AVCC/BVCC and AVPP/BVPP), each controlled via a P2C 3-lead serial interface (CLOCK/DATA/LATCH) compatible with CardBus controllers. Its internal UVLO circuitry disables all switches if VI(3.3V) drops below 2.4 V, while POR asserts internal RESET when VI(3.3V) falls below 1.7 V.

Switching behavior is governed by latch-controlled propagation delays: t_pd(on) ranges from 0.3 ms (xVCC @ 3.3 V) to 2.2 ms (xVPP @ 12 V); rise/fall times are load-dependent (e.g., 0.26–2.35 ms for xVCC with CL = 0.1–150 µF). Thermal shutdown hysteresis is 10°C, and OC reporting uses an open-drain output requiring external pullup.

Key Specifications

Pinout & Package

TPS2206ADBR is packaged in a 30-pin SSOP (DB) with exposed thermal pad, optimized for surface-mount assembly and thermal dissipation (821.46 mW at TA = 25°C, derated to 164.29 mW at TA = 85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2206ADB and TPS2226A, the TPS2206ADBR provides tape-and-reel readiness for volume production while retaining full functional equivalence to the base TPS2206A design - making it optimal for OEM notebook and PDA manufacturing where SMT efficiency and PCMCIA compliance are mandatory.

Availability

TPS2206ADBR is available at Aetrix Electronics and suitable for notebook computers, personal digital assistants (PDAs), and set-top boxes requiring stable component supply, long-term lifecycle management, and JEDEC-compliant tape-and-reel packaging for automated assembly.

Supply support for TPS2206ADBR 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 solutions for industrial, automotive, and computing markets.

The TPS2206ADBR belongs to TI's PC CardBus power-interface switch product line, engineered specifically to replace discrete fuse-and-FET solutions in portable systems requiring dual-slot hot-swap capability and full PCMCIA specification compliance.

FAQ

What is the package type and lead count for TPS2206ADBR?

The TPS2206ADBR uses a 30-pin SSOP (DB) package with exposed thermal pad, designed for surface-mount assembly and optimized thermal performance. The "R" suffix confirms it is supplied in tape-and-reel format, compatible with automated pick-and-place equipment. Pin count and footprint match the non-R variant TPS2206ADB exactly - no layout changes are needed when upgrading to tape-and-reel supply.

Does TPS2206ADBR support both 3.3-V and 5-V PC Cards simultaneously?

Yes, the TPS2206ADBR supports concurrent operation of 3.3-V and 5-V cards across its two slots. Each slot has independent AVCC/BVCC outputs capable of delivering either 3.3 V or 5 V (selected by host controller logic), while sharing common 3.3-V and 5-V input rails. This enables mixed-voltage configurations - for example, a 3.3-V Wi-Fi card in Slot A and a 5-V modem card in Slot B - without external level-shifting circuitry.

How does the OC (overcurrent) pin function on TPS2206ADBR?

The OC pin on TPS2206ADBR is an open-drain output that pulls low whenever any xVCC or xVPP output exceeds its respective current limit (1–2 A for xVCC, 120–300 mA for xVPP). An external pullup resistor is required to define the high state. This signal allows the host controller to detect overcurrent events in real time - for instance, triggering software diagnostics or disabling the affected slot - without requiring dedicated current-sense amplifiers or ADC resources.

What is the purpose of the SHDN and RESET inputs on TPS2206ADBR?

The SHDN input is an asynchronous active-low command that forces all power outputs into high-impedance (Hi-Z) state immediately, overriding serial interface commands. The RESET input is also active-low and performs a full initialization: it opens all switches and closes all discharge paths, ensuring a known safe state at system boot. Both inputs feature internal pullup (SHDN) or pulldown (RESET) to prevent floating states - critical for reliable power sequencing in battery-backed systems.

Can TPS2206ADBR be used in single-slot applications?

Yes, the TPS2206ADBR can be used in single-slot applications by configuring only the AVCC/AVPP outputs and leaving BVCC/BVPP unconnected or disabled via serial command. Its pinout and control logic fully support this mode, and the device retains all protection features (thermal shutdown, OC reporting, UVLO) for the active slot. For cost-optimized single-slot designs, TI also offers the pin-compatible TPS2210A - but TPS2206ADBR remains valid where future dual-slot expansion or inventory consolidation is desired.