Texas Instruments TPS2211AIDBG4

Overview

TPS2211AIDBG4 from Texas Instruments is a fully integrated PC Card power-interface switch for single-slot 3.3-V/5-V/12-V card power distribution. It provides dual switched outputs (AVCC and AVPP), 70-mΩ typical r_DS(on) for 3.3-V/5-V VCC switching, break-before-make control logic, thermal and short-circuit protection, and operates from −40°C to 85°C in a 16-pin SSOP (DB) package. It enables compliant power sequencing in notebook computers and PDAs.

For engineers reviewing the TPS2211AIDBG4 datasheet, TPS2211AIDBG4 pinout, TPS2211AIDBG4 application, or TPS2211AIDBG4 equivalent, key selection criteria include its 1-A AVCC output current capability, 150-mA AVPP current limit, 3.3-V low-voltage mode operation without 5-V bias, OC fault reporting, and compatibility with PCMCIA controllers and mixed-voltage card insertion protocols.

Technical Context

The TPS2211AIDBG4 integrates six internal MOSFETs-three for AVCC (3.3-V/5-V/0-V) and three for AVPP (0-V/3.3-V/5-V/12-V)-controlled by independent 2-bit logic inputs (VCCD0/VCCD1 and VPPD0/VPPD1). Its LinBiCMOS process enables on-chip current sensing without external sense resistors, delivering per-output overcurrent limiting and thermal shutdown at 140°C with 10°C hysteresis.

It supports PCMCIA-compliant voltage transitioning: discharge of residual 5-V charge before applying 3.3-V power, selectable ground-state outputs, and 12-V supply disable except during flash programming. The device uses an internal charge pump to eliminate dependency on external 12-V bias, enabling true 3.3-V-only operation with <1-µA shutdown current.

Key Specifications

Pinout & Package

TPS2211AIDBG4 is housed in a 16-pin plastic small-outline (SSOP) package, designated DB, with 0.65-mm lead pitch and exposed pad not connected internally. The package is RoHS-compliant and rated for −40°C to 85°C operating ambient temperature.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2211IDB, the TPS2211AIDBG4 trades 22 mΩ higher r_DS(on) for broader qualification and identical feature set; versus TPS2212IDB, it adds essential 12-V AVPP switching and 4× higher AVCC current, making it the only option for full PCMCIA-compliant flash-memory cards.

Availability

TPS2211AIDBG4 is available at Aetrix Electronics and suitable for notebook computer expansion slots, PDA peripheral interfaces, and digital camera memory adapters requiring stable component supply, long-term industrial lifecycle support, and guaranteed PCMCIA specification compliance.

Supply support for TPS2211AIDBG4 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 technologies, with decades of experience in PC Card and mobile interface solutions.

The TPS2211A belongs to TI's PC Card power-interface switch product line, engineered specifically to replace discrete MOSFET-based power solutions in portable computing systems while ensuring full PCMCIA 3.3-V/5-V/12-V compliance and robust fault handling.

FAQ

What is the primary function of the TPS2211AIDBG4 in a PC Card system?

The TPS2211AIDBG4 serves as a fully integrated power-interface switch that manages 3.3-V, 5-V, and 12-V power delivery to PC Cards. It replaces discrete MOSFETs, current-sense resistors, and fuses with a single IC that provides AVCC and AVPP switched outputs, overcurrent reporting via the OC pin, thermal protection, and PCMCIA-compliant break-before-make sequencing - all within the TPS2211AIDBG4 package.

Does the TPS2211AIDBG4 support 3.3-V-only operation without a 5-V supply?

Yes, the TPS2211AIDBG4 supports true 3.3-V low-voltage mode: when VI(5V) = 0 V, it derives internal bias from the 3.3-V input pins and delivers only 3.3-V to AVCC. This enables operation in sleep or pager modes where only 3.3 V is available - a core capability confirmed in the TPS2211AIDBG4 datasheet Section 7.4 and Application Information.

How does overcurrent protection work on the TPS2211AIDBG4 AVCC and AVPP outputs?

The TPS2211AIDBG4 implements independent, per-output overcurrent limiting using internal sense FETs - not external resistors. When AVCC current exceeds ~1.6 A or AVPP current exceeds ~280 mA, the affected output enters linear current-limit mode while others remain active. The OC pin pulls low to signal the fault, enabling host diagnostics. This behavior is specified in the Electrical Characteristics table and verified in the TPS2211AIDBG4 thermal and fault-protection sections.

What is the role of the SHDN pin on the TPS2211AIDBG4?

The SHDN pin is an active-high logic input that places all TPS2211AIDBG4 power outputs (AVCC and AVPP) into high-impedance state when asserted. In shutdown mode, total quiescent current drops to ≤1 µA - critical for battery-powered systems in standby. The pin also disables internal bias generation, ensuring zero current draw from unused 3.3-V/5-V inputs, as documented in the Recommended Operating Conditions and Shutdown Mode electrical specs.

Can the TPS2211AIDBG4 be used with PC Cards requiring 12-V Vpp for flash programming?

Yes, the TPS2211AIDBG4 explicitly supports 12-V flash programming via its AVPP output. The 12-V input (pin 10) is optional and may be disabled except during programming - the internal charge pump allows full functionality without it. The device delivers up to 150 mA at 12 V to AVPP with 1–2 Ω typical r_DS(on), meeting PCMCIA Vpp requirements, as confirmed in the Selection Guide and Electrical Characteristics tables of the TPS2211AIDBG4 datasheet.