Texas Instruments TPS2211APWR

Overview

TPS2211APWR from Texas Instruments is a fully integrated PC Card power-interface switch supporting 3.3-V, 5-V, and 12-V VCC/VPP distribution with 70-mΩ typical r_DS(on) for both 3.3-V and 5-V AVCC outputs, break-before-make switching, thermal/overcurrent protection, and 3.3-V low-voltage mode operation - deployed in notebook computers and PDAs for compliant single-slot PCMCIA power management.

For engineers reviewing the TPS2211APWR datasheet, TPS2211APWR pinout, TPS2211APWR application, or TPS2211APWR equivalent, key selection criteria include its dual-rail AVCC/AVPP switching capability, 1-A continuous 3.3/5-V output current rating, 150-mA 12-V VPP limit, thermal shutdown at 140°C, and compatibility with industry-standard PCMCIA controllers without external fuses.

Technical Context

The TPS2211APWR implements a LinBiCMOS-based integrated power-switch matrix with three independent MOSFET banks (S1–S3 for AVCC; S4–S6 for AVPP) controlled by logic-level inputs (VCCD0/VCCD1, VPPD0/VPPD1), enabling discrete voltage selection (0 V, 3.3 V, 5 V, or Hi-Z on AVCC; 0 V, 3.3 V, 5 V, 12 V, or Hi-Z on AVPP). It uses internal sense FETs-not external resistors-for per-output overcurrent detection, reporting faults via open-drain OC pin.

Its 3.3-V low-voltage mode eliminates dependency on 5-V bias by deriving internal supply from 3.3-V input alone, supporting sleep/pager modes; the 12-V rail is optional and disabled except during flash programming, reducing system quiescent current to ≤1 µA in shutdown. Thermal limiting engages at 140°C with 10°C hysteresis, disabling outputs until cooldown.

Key Specifications

Pinout & Package

TPS2211APWR is packaged in a 20-pin HTSSOP (PWP) with PowerPAD™ thermal enhancement, measuring 6.5 mm × 4.4 mm × 1.2 mm, and features exposed thermal pad for improved heat dissipation in high-power-density PC Card host designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2211AIDB and TPS2212IDB, the TPS2211APWR delivers superior thermal performance via PowerPAD™, enables true 3.3-V-only operation, and supports full 1-A AVCC loading - making it the preferred choice for next-generation portable PC Card hosts demanding reliability, efficiency, and mixed-voltage flexibility.

Availability

TPS2211APWR is available at Aetrix Electronics and suitable for notebook computers, PDAs, digital cameras, and barcode scanners requiring stable component supply with guaranteed long-term PCMCIA compliance and industrial temperature range (−40°C to 85°C).

Supply support for TPS2211APWR 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 decades of expertise in power management and interface solutions.

The TPS2211A product line was designed specifically for PCMCIA-compliant PC Card power interface applications, integrating MOSFETs, protection, and control logic to replace discrete power-switching circuits in portable computing platforms.

FAQ

What is the maximum continuous output current supported by TPS2211APWR on the AVCC rail?

The TPS2211APWR supports 1 A continuous output current on the AVCC rail at both 3.3 V and 5 V, verified across −40°C to 85°C ambient temperature. This rating assumes proper PCB layout with all four AVCC pins (13–16) paralleled and adequate thermal management via the PowerPAD™. Exceeding 1 A triggers linear current limiting starting at ~1.6 A typical, preventing damage while sustaining partial functionality.

Does TPS2211APWR require an external 12-V supply for normal operation?

No, the TPS2211APWR does not require an external 12-V supply for core operation. Its internal charge pump generates necessary gate-drive voltages from the 3.3-V or 5-V inputs, allowing the 12-V input to be disabled except during flash-memory programming. Leaving the 12-V pin unconnected or floating is not permitted; it must be either driven or properly terminated per TI design guidelines to avoid latch-up.

How does the TPS2211APWR implement overcurrent protection, and what happens when it triggers?

The TPS2211APWR uses dedicated sense FETs per output (AVCC and AVPP) to monitor current without adding series resistance. When overcurrent is detected - 1.6 A typical for AVCC, 280 mA for AVPP - the affected switch enters linear current-limit mode rather than shutting down completely. The OC pin asserts low to signal the fault, while unaffected rails continue operating normally, preserving system uptime and enabling targeted diagnostics.

Can TPS2211APWR operate with only a 3.3-V input supply?

Yes, the TPS2211APWR supports 3.3-V low-voltage mode: when VI(5V) = 0 V, it derives all internal bias from the 3.3-V input and delivers only 3.3-V to AVCC. This mode is essential for battery-powered sleep/pager states. However, AVPP remains limited to 0 V or Hi-Z in this configuration - 12-V output requires either 5-V or 12-V input present.

What is the purpose of the four AVCC pins (13–16) on the TPS2211APWR package?

The four AVCC pins (13–16) are electrically paralleled internally and must be tied together externally near the device to minimize PCB trace resistance. This parallel configuration reduces effective r_DS(on) and voltage drop, enabling the full 1-A continuous output while maintaining PCMCIA voltage-regulation compliance. Using fewer than all four pins increases IR drop and risks output undervoltage under load.