Texas Instruments TPS2211IDB

Overview

TPS2211IDB from Texas Instruments is a single-slot PC Card power interface switch designed for parallel PCMCIA controllers. It integrates dual VCC (3.3 V/5 V) and VPP (3.3 V/5 V/12 V) switching, features 90-mΩ rDS(on) for 5-V VCC switching, 48-mΩ for 3.3-V VCC switching, and provides overcurrent/thermal protection. It enables compliant power delivery in notebook computers and PDAs.

For engineers reviewing the TPS2211IDB datasheet, TPS2211IDB pinout, TPS2211IDB application, or TPS2211IDB equivalent, key selection factors include its break-before-make switching logic, 1-A AVCC output capability, 150-mA AVPP output rating, 3.3-V low-voltage mode operation, and SSOP-16 package compatibility with legacy PCMCIA host designs.

Technical Context

The TPS2211IDB implements independent control of AVCC (dual-rail 3.3 V/5 V) and AVPP (3.3 V/5 V/12 V) outputs via four logic inputs (VCCD0/VCCD1/VPPD0/VPPD1), enabling full PC Card voltage sequencing per PCMCIA standards. Its LinBiCMOS process integrates MOSFET switches, current-sense FETs, thermal shutdown circuitry, and logic decoding on a single die.

It supports 3.3-V-only biasing (no 5-V required), uses an internal charge pump to eliminate dependency on external 12-V supply except during flash programming, and delivers OC fault reporting with active-low logic-level output. All outputs enter high-impedance state upon SHDN assertion.

Key Specifications

Pinout & Package

TPS2211IDB is housed in a 16-pin SSOP (DB) package with 0.65-mm pitch, optimized for surface-mount assembly in space-constrained PCMCIA host slots.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2211IDB, TPS2212IDB adds dual-slot support but increases footprint and complexity, while MAX1681ESA+ sacrifices 3.3-V/12-V flexibility for lower cost and smaller size-neither offers drop-in replacement capability.

Availability

TPS2211IDB is available at Aetrix Electronics and suitable for notebook computer host designs, PDA expansion interfaces, digital camera media slots, and industrial barcode scanner peripheral interfaces requiring stable component supply and long-lifecycle support.

Supply support for TPS2211IDB 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 technologies with broad industrial and computing market reach.

The TPS2211 product line was engineered specifically for PCMCIA-compliant power management in portable computing platforms, addressing voltage sequencing, hot-plug safety, and battery-efficient 3.3-V operation.

FAQ

What is the maximum continuous output current supported by TPS2211IDB on its AVCC pins?

The TPS2211IDB supports 1 A continuous output current on its AVCC pins (pins 11–13) at both 3.3 V and 5 V, verified across the full operating temperature range (–40°C to 85°C). This rating assumes proper PCB layout with all three AVCC pins paralleled and adequate thermal dissipation. The device internally limits current to ~1.6 A typical during overcurrent events, preventing damage while maintaining system operation.

Does TPS2211IDB support true 3.3-V-only operation without any 5-V supply present?

Yes, TPS2211IDB supports full 3.3-V low-voltage mode: when VI(5V) = 0 V and only 3.3 V is applied to pins 3 and 4, the IC derives bias power from the 3.3-V rail and delivers 3.3 V to AVCC outputs. In this mode, 5-V switching is disabled, and AVPP remains functional for 3.3-V/5-V/12-V selection-enabling compliant operation in sleep or pager modes where only 3.3 V is available.

How does the OC pin on TPS2211IDB behave during an overcurrent event?

The OC pin (pin 8) on TPS2211IDB is an open-drain, active-low overcurrent indicator. Under normal operation, it remains at logic high (pulled up externally). When either AVCC or AVPP output exceeds its respective current limit (~1.6 A or ~280 mA), OC pulls low within microseconds to signal the host controller. The pin stays low until the fault clears and the device resets-no manual reset is required, and other outputs remain unaffected.

Can TPS2211IDB safely drive a 12-V PC Card without an external 12-V supply connected?

No-TPS2211IDB requires the 12-V input (pin 9) to be present to deliver 12 V to the AVPP output (pin 10). However, the IC uses an internal charge pump powered from the 5-V input to generate gate drive voltages, so the 12-V rail can be disabled by the host system except during flash memory programming/erase cycles. Leaving the 12-V pin unconnected or grounded violates absolute maximum ratings and may damage the device.

What package type and RoHS status does TPS2211IDB use?

TPS2211IDB is supplied in a 16-pin SSOP (DB) package with 0.65-mm lead pitch and is RoHS-compliant per Texas Instruments' published environmental documentation. The DB package is only available in tape-and-reel format (denoted by the 'R' suffix in TPS2211IDBR), and thermal performance is specified for standard FR4 PCB mounting with no special heatsinking required.