Texas Instruments TPS2214DBR

Overview

TPS2214DBR from Texas Instruments is a dual-slot PC Card power-interface switch for serial PCMCIA controllers, integrating two independent xVCC/xVPP switching channels with 60-mΩ typical rDS(on) for 3.3-V/5-V xVCC outputs, 3.3-V/5-V/12-V xVPP programmability, and thermal/short-circuit protection. It enables compliant power delivery to PC Cards in notebook computers and PDAs.

For engineers reviewing the TPS2214DBR datasheet, TPS2214DBR pinout, TPS2214DBR application, or TPS2214DBR equivalent, key selection criteria include dual-slot VCC/VPP independence, 3.3-V low-voltage mode operation without 5-V bias, break-before-make switching, standby-mode 50-mA current limiting, and TTL-compatible serial control interface.

Technical Context

The TPS2214DBR implements two fully independent power-switching channels (A and B), each with separate xVCC (3.3-V/5-V) and xVPP (3.3-V/5-V/12-V) outputs controlled via a 11-bit serial interface. Its MODE pin selects between TPS2214 (MODE = high) and TPS2206 (MODE = low/floating) logic mapping.

Each channel features internal current limiting (1 A xVCC, 200 mA xVPP at 70°C), thermal shutdown at 155°C with 10°C hysteresis, and OC fault reporting. Standby mode (STBY = low) reduces all current limits to 50 mA typical, supporting low-power system states.

Key Specifications

Pinout & Package

TPS2214DBR is housed in a 24-pin Plastic Small Outline (DB) package, 300 mil width, RoHS-compliant, rated for –40°C to 125°C operating junction temperature.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2214DBR, TPS2216DBR demands PCB layout changes despite identical function, while TPS2206DBR trades serial interface flexibility and low-voltage mode for simpler control - making TPS2214DBR optimal for space-constrained, battery-sensitive, and software-configurable designs.

Availability

TPS2214DBR is available at Aetrix Electronics and suitable for notebook computers, PDAs, digital cameras, and barcode scanners requiring stable component supply, long-term lifecycle support, and PCMCIA-compliant power sequencing.

Supply support for TPS2214DBR 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The TPS2214 product line was designed specifically to meet PCMCIA power-interface requirements for dual-slot portable systems, integrating VCC/VPP switching, protection, and serial control in a single DB-package IC.

FAQ

What is the primary function of the TPS2214DBR in a PC Card system?

The TPS2214DBR serves as a dual-slot PC Card power-interface switch that independently controls VCC (3.3-V/5-V) and VPP (3.3-V/5-V/12-V) power delivery to two PC Card slots. It integrates MOSFET switches, current limiting, thermal protection, and a serial control interface - replacing discrete FETs, fuses, and logic required in legacy PCMCIA host designs. The TPS2214DBR ensures compliance with PC Card Standard power sequencing and fault handling.

Does the TPS2214DBR support operation with only a 3.3-V supply?

Yes, the TPS2214DBR supports 3.3-V low-voltage mode, allowing full xVCC and xVPP switching using only the 3.3-V input (pins 13,14) without requiring a 5-V supply. This capability is essential for battery-powered sleep modes in notebooks and PDAs where 5-V rails are disabled. The TPS2214DBR maintains TTL-compatible logic levels and serial interface functionality under 3.3-V-only bias.

How does the TPS2214DBR handle overcurrent or thermal faults?

The TPS2214DBR provides integrated short-circuit and thermal protection: xVCC outputs limit to 1 A and xVPP to 200 mA at 70°C, with faster response (100 µs for xVCC, 16 µs for xVPP) during hard shorts. Thermal shutdown activates at 155°C with 10°C hysteresis. During any fault, the open-drain OC pin pulls low to signal the host controller. The TPS2214DBR automatically recovers after fault removal and thermal cooldown - no reset required.

Can the TPS2214DBR's xVPP outputs be programmed independently per slot?

Yes, the TPS2214DBR supports independent xVPP programming for Slot A (AVPP, pin 8) and Slot B (BVPP, pin 19) via its 11-bit serial interface. Each xVPP output can be set to 3.3-V, 5-V, 12-V, GND, or high-impedance state regardless of the other slot's setting. This enables mixed-card configurations - for example, powering a CompactFlash card requiring 12-V VPP in Slot A while delivering 3.3-V VPP to a Wi-Fi card in Slot B - all under software control.

What is the purpose of the MODE pin on the TPS2214DBR?

The MODE pin (pin 22) configures the TPS2214DBR's control logic mapping: when pulled high externally, it operates as the TPS2214 with serial interface and full feature set; when floating or pulled low, it reverts to TPS2206 behavior with parallel (not serial) control and no 3.3-V low-voltage mode. The TPS2214DBR requires MODE = high for intended operation - the internal 150-kΩ pulldown resistor ensures default TPS2206 mode if left unconnected, so external pullup is mandatory.