Texas Instruments TPS2216DB

Overview

TPS2216DB from Texas Instruments is a dual-channel PC Card power-interface switch IC designed for notebook and desktop computers, PDAs, and digital cameras. It integrates two independent xVCC/xVPP switching channels (AVCC/AVPP and BVCC/BVPP), supports 3.3-V/5-V/12-V input rails, delivers ≤1 A per xVCC channel and ≤200 mA per xVPP channel, features 60-mΩ typical rDS(on) at 3.3 V, and provides short-circuit and thermal protection with 150-µA max quiescent current.

For engineers reviewing the TPS2216DB datasheet, TPS2216DB pinout, TPS2216DB application, or TPS2216DB equivalent, key selection considerations include its dual-card power management capability, break-before-make switching, 3.3-V low-voltage mode operation without 5-V bias, independent xVPP programming, and compliance with PC Card™ standards for hot-swap safety and system-level fault isolation.

Technical Context

The TPS2216DB implements fully integrated MOSFET-based power distribution with internal current limiting and thermal shutdown circuitry. Its logic-controlled serial interface (CLOCK/DATA/LATCH) enables programmable xVPP output selection across 3.3 V, 5 V, or 12 V independently of xVCC outputs, while MODE pin configuration distinguishes TPS2216 operation from legacy TPS2206 behavior.

It features dual independent high-side switches per channel (xVCC and xVPP), each with dedicated overcurrent detection and OC fault reporting. Standby mode reduces all current limits to 50 mA (typical), and internal power-on reset ensures deterministic startup sequencing - critical for PC Card hot-plug reliability and system-level power domain coordination.

Key Specifications

Pinout & Package

TPS2216DB is housed in a 30-pin SSOP (Shrink Small Outline Package) with 0.65-mm lead pitch and exposed thermal pad (non-electrical). The package supports JEDEC-standard reflow profiles and provides moderate thermal resistance (1095 mW at TA ≤ 25°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2216DAP, the TPS2216DB trades thermal headroom for smaller PCB area and lower assembly cost; compared with TPS2206, it adds essential modern features like 3.3-V-only operation and flexible Vpp control - making it the preferred choice for new PC Card designs requiring compliance, efficiency, and configurability.

Availability

TPS2216DB is available at Aetrix Electronics and suitable for notebook computers, desktop expansion systems, and portable digital devices requiring stable component supply for PC Card power interface implementation.

Supply support for TPS2216DB 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 over 50 years of innovation in high-reliability IC design.

The TPS2216DB belongs to TI's PC Card power interface product line, engineered specifically to meet PCMCIA standards for hot-plug safety, multi-rail voltage support, and integrated protection - targeting portable computing and industrial peripheral applications.

FAQ

What is the primary function of the TPS2216DB in a PC Card system?

The TPS2216DB serves as a dual-channel, fully integrated power interface switch that manages VCC and Vpp power delivery to two independent PC Cards. It replaces discrete MOSFETs, current-sense resistors, and protection logic with a single IC, providing programmable voltage selection, break-before-make switching, short-circuit protection, and thermal shutdown - all compliant with PC Card™ specifications.

Does the TPS2216DB support operation from a 3.3-V supply only, without 5-V present?

Yes, the TPS2216DB supports 3.3-V low-voltage mode, allowing full xVCC switching functionality using only the 3.3-V input rail - even when 5-V is absent. This capability is critical for maintaining card power during system sleep modes and extends battery life in portable applications such as notebooks and PDAs.

How does the TPS2216DB implement independent xVPP programming for two cards?

The TPS2216DB uses a 3-wire serial interface (CLOCK, DATA, LATCH) to load an 11-bit control word that separately configures AVPP and BVPP outputs. Each xVPP can be set to 3.3 V, 5 V, 12 V, GND, or Hi-Z - enabling mixed-card configurations (e.g., one card requiring 3.3-V Vpp for SRAM, another needing 12-V Vpp for flash programming) without external hardware changes.

What protection features are built into the TPS2216DB?

The TPS2216DB integrates short-circuit protection (1-A xVCC / 200-mA xVPP current limiting), thermal shutdown (155°C trip with 10°C hysteresis), and overcurrent fault reporting via the open-drain OC pin. These features eliminate the need for external fuses or discrete protection circuits while enabling host firmware to detect and isolate faulty cards safely.

Is the TPS2216DB pin-compatible with earlier TI PC Card switches like the TPS2202A?

The TPS2216DB is backward-compatible with the TPS2202A and TPS2206 in terms of functional interface and system integration, but it is not pin-compatible due to differences in pin assignment and added features (e.g., MODE pin behavior, serial interface signals). Migration requires PCB layout revision, though firmware and power architecture remain largely reusable.