Texas Instruments TPS2212IDB

Overview

TPS2212IDB from Texas Instruments is a single-slot, parallel-interface power switch IC designed for low-power PC Card (PCMCIA) sockets. It integrates dual VCC and VPP switching paths with 160-mΩ rDS(on) at 5 V, 450-mA typical VCC current limit, 3.3-V low-voltage mode operation, and break-before-make sequencing-enabling compliant power delivery to 3.3-V/5-V/12-V PC Cards in PDAs, bar-code scanners, and compact flash interfaces.

For engineers reviewing the TPS2212IDB datasheet, TPS2212IDB pinout, TPS2212IDB application, or TPS2212IDB equivalent, this device supports precise voltage-selectable outputs (0 V / 3.3 V / 5 V / VPPI), overcurrent reporting via OC pin, thermal shutdown, and software-controlled shutdown (SHDN) - all critical for robust, battery-sensitive PC Card host designs.

Technical Context

The TPS2212IDB implements independent VCC and VPP switching matrices using LinBiCMOS process technology, with discrete MOSFETs, current-sense FETs, and logic control integrated on-die. Its control logic accepts parallel VCCD0/VCCD1 and VPPD0/VPPD1 inputs to select output voltage states per PCMCIA specification, including 3.3-V-only boot mode when 5-V input is absent.

It features internal charge-pump bias generation, eliminating need for continuous 12-V supply - VPPI may be disabled except during flash programming. Thermal limiting disables outputs until junction temperature falls below threshold, while OC pin provides open-drain fault indication without requiring external circuitry.

Key Specifications

Pinout & Package

TPS2212IDB is housed in a 16-pin Small Outline Package (SSOP-DB), 0.209-inch body width, 0.025-inch lead pitch, RoHS-compliant, tape-and-reel ready (TPS2212IDBR).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2212IDB, TPS2211IDB offers higher current capacity but sacrifices 3.3-V-only operation and adds 2× quiescent current; MAX1968EAP+ provides greater flexibility across multiple slots but increases design complexity and component count - making TPS2212IDB optimal for cost-sensitive, battery-powered single-slot systems.

Availability

TPS2212IDB is available at Aetrix Electronics and suitable for PDAs, bar-code scanners, and notebook PC Card sockets requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for TPS2212IDB 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 over 50 years of innovation in power management ICs.

The TPS2212IDB belongs to TI's PC Card Interface Power Switch family, engineered specifically to replace discrete MOSFET solutions in portable computing peripherals while meeting PCMCIA mechanical, electrical, and timing specifications.

FAQ

What is the maximum continuous output current supported by the TPS2212IDB on its VCC and VPP rails?

The TPS2212IDB supports 250 mA continuous on the VCC rail and 150 mA continuous on the VPP rail within regulation limits across –40°C to +85°C ambient. These values reflect worst-case conditions including rDS(on) drift and PCB trace losses - verified per PCMCIA voltage regulation requirements (5% for 5 V, 300 mV for 3.3 V). The TPS2212IDB's internal current limiting activates at 450 mA (VCC) and 280 mA (VPP) typical to protect against shorts.

Does the TPS2212IDB require an external 12-V supply to operate normally?

No - the TPS2212IDB uses an internal charge pump powered from the 5-V input to generate gate-drive voltages, so VPPI (12-V input) is only required during flash-memory programming. In normal operation (e.g., 3.3-V or 5-V card power delivery), VPPI may be left unconnected or tied to a high-impedance state. This reduces system power consumption and extends battery life in portable applications using the TPS2212IDB.

How does the TPS2212IDB handle overcurrent events, and what feedback does it provide?

The TPS2212IDB employs dedicated sense-FET circuitry on each VCC and VPP output to detect overcurrent. When triggered, it linearly limits current to the specified threshold (e.g., ~450 mA for VCC) without shutting down other rails. Simultaneously, the open-drain OC pin pulls low to signal the host controller. This enables real-time fault isolation - for example, distinguishing between a faulty card and connector issue - without disrupting system operation, a key capability of the TPS2212IDB.

Can the TPS2212IDB operate with only a 3.3-V supply, and what functionality remains available?

Yes - the TPS2212IDB supports full 3.3-V low-voltage mode when VI(5V) = 0 V. In this mode, it derives bias power from the 3.3-V input pins and delivers only 3.3-V VCC to the PC Card. All control logic, OC reporting, SHDN functionality, and thermal protection remain active. However, 5-V and 12-V VPP outputs are unavailable, making the TPS2212IDB ideal for sleep-mode or pager-mode operation where only 3.3-V power is present.

What package type and mounting compatibility does the TPS2212IDB offer?

The TPS2212IDB is supplied in a 16-pin SSOP (DB) package with 0.65-mm lead pitch and 5.3-mm body width, optimized for surface-mount assembly. It is compatible with standard reflow profiles and JEDEC J-STD-020 moisture sensitivity level 3. Tape-and-reel packaging (designated TPS2212IDBR) is available for automated pick-and-place. The DB package footprint matches TI's TPS2211IDB, enabling drop-in replacement in existing layouts where higher current is not required.