Texas Instruments TPS2206IDAP

Overview

TPS2206IDAP from Texas Instruments is a dual-slot PC Card power-interface switch IC that integrates VCC and Vpp switching, serial control logic, current limiting, and thermal protection in a single LinBiCMOS device. It delivers 3.3-V/5-V/12-V switched outputs to two PC Cards with break-before-make sequencing, 110-mΩ 3.3-V VCC switch resistance, and 1-A continuous output per VCC rail - used in notebook computers and PDAs for hot-plug power management.

For engineers reviewing the TPS2206IDAP datasheet, TPS2206IDAP pinout, TPS2206IDAP application, or TPS2206IDAP equivalent, this page provides verified package mapping (32-pin TSSOP-DAP), confirmed terminal functions (e.g., AVCC/BVCC outputs, OC fault reporting), real-world timing specs (e.g., 4.4-ms LATCH↑ to VO(xVCC) turn-on), and validated alternatives for PC Card interface redesigns.

Technical Context

The TPS2206IDAP implements a P2C 3-lead serial interface (DATA/CLOCK/LATCH) compatible with CardBus controllers, enabling programmable voltage selection (0 V / 3.3 V / 5 V / 12 V) per output channel. Its dual independent switch banks support simultaneous or staggered activation of two PC Cards with dedicated reset inputs (active-high and active-low variants).

It features internal charge-pump gate drive eliminating dependency on external 12-V supply for bias - enabling true 3.3-V-only operation - and integrates sense-FET-based current limiting (1-A VCC, 150-mA Vpp) with OC fault flag assertion and thermal shutdown at 150°C junction temperature.

Key Specifications

Pinout & Package

TPS2206IDAP uses a 32-pin TSSOP (DAP) package with exposed thermal pad. Pin 1 is top-left corner (marked dot), pin count increases left-to-right, top row 1–16, bottom row 17–32.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2202IDB, TPS2206IDAP removes VDD dependency and Vpp-good reporting but adds 3.3-V-only operation; compared with TPS2206IDFR, it offers superior thermal dissipation (1625 mW vs 1158 mW at 25°C) due to optimized DAP thermal pad design.

Availability

TPS2206IDAP is available at Aetrix Electronics and suitable for notebook computers, PDAs, and digital cameras requiring stable component supply, long-term lifecycle support, and PCMCIA-compliant power switching.

Supply support for TPS2206IDAP 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 power management ICs for industrial, automotive, and computing markets.

The TPS2206 product line was designed specifically for PC Card and CardBus interface power management - integrating VCC/Vpp switching, serial control, and protection into a single chip to replace multi-component discrete solutions.

FAQ

What is the maximum continuous output current supported by the TPS2206IDAP on its VCC channels?

The TPS2206IDAP supports 1 A continuous output current per VCC channel (AVCC and BVCC) across the full operating temperature range (−40°C to +85°C). This rating is validated for both 3.3-V and 5-V input configurations and aligns with PCMCIA slot power limits. The device uses internal sense-FET current limiting to enforce this limit without external components.

Does the TPS2206IDAP require an external 12-V supply to operate?

No, the TPS2206IDAP does not require an external 12-V supply for normal operation. It uses an internal charge pump to generate necessary gate-drive voltages from the 3.3-V or 5-V input rails. The 12-V input (pins 8 and 25) is only needed during flash-memory programming; it can be disabled otherwise to extend battery life. The TPS2206IDAP datasheet explicitly states this capability as a key power-saving feature.

How does the TPS2206IDAP implement overcurrent protection, and what is the role of the OC pin?

The TPS2206IDAP implements overcurrent protection using integrated sense-FETs that linearly limit output current during overload conditions. When current exceeds the rated limit (1 A for VCC, 150 mA for Vpp), the OC pin asserts a low-level open-drain signal. This allows the host microcontroller to detect faults in real time and initiate diagnostics or user alerts - replacing traditional fuses and improving system serviceability.

What are the key differences between the TPS2206IDAP and the older TPS2202IDB in terms of pin compatibility and functionality?

The TPS2206IDAP is backward compatible with the TPS2202IDB but omits the VDD pin (pin 25 becomes NC) and removes APWR_GOOD/BPWR_GOOD status outputs. Bias current is derived from 3.3-V or 5-V inputs instead of VDD, and 3.3-V-only operation is enabled. The TPS2206IDAP uses a 32-pin TSSOP package versus the TPS2202IDB's 30-pin SSOP - making them physically incompatible despite functional overlap.

Can the TPS2206IDAP support simultaneous power delivery to two different PC Card voltage standards (e.g., 3.3 V and 5 V)?

Yes, the TPS2206IDAP supports independent voltage selection per card: AVCC/AVPP can be set to 3.3 V while BVCC/BVPP are set to 5 V (or vice versa), or both can be configured identically. This is achieved via the P2C serial interface, which allows individual control of each output's state (0 V, 3.3 V, 5 V, 12 V, or high-Z). The break-before-make architecture prevents cross-rail shorts during reconfiguration.