Texas Instruments TPS2201IDB

Overview

TPS2201IDB from Texas Instruments is a dual-slot PC Card (PCMCIA) power-interface switch IC that integrates VCC and Vpp switching for 3.3-V, 5-V, and 12-V card power distribution in notebook computers and PDAs. It features break-before-make switching, internal charge pump (no external capacitors), 160-mΩ rDS(on) for 5-V VCC outputs, thermal/short-circuit protection, and 1-µA shutdown current.

For engineers reviewing the TPS2201IDB datasheet, TPS2201IDB pinout, TPS2201IDB application, or TPS2201IDB equivalent, this device serves as a fully integrated, PCMCIA-compliant power management solution for parallel PCMCIA controllers requiring precise voltage sequencing, low quiescent power, and fault reporting in battery-constrained portable systems.

Technical Context

The TPS2201IDB implements dual independent power-switching channels - one per PC Card slot - each supporting selectable VCC (3.3 V/5 V) and Vpp (3.3 V/5 V/12 V) outputs with programmable logic inputs. Its LinBiCMOS process enables on-chip current limiting, thermal shutdown, and power-good reporting without external fuses or sense resistors.

It uses an internal charge pump to generate gate-drive voltages from the 5-V VDD supply, eliminating dependency on the 12-V rail except during flash programming. Control logic supports PCMCIA 3.3-V/5-V transition requirements including capacitor discharge via active ground switches and break-before-make timing.

Key Specifications

Pinout & Package

TPS2201IDB is housed in a 30-pin Shrink Small-Outline Package (SSOP-DB), 0.64 mm pitch, 7.2 mm × 5.3 mm body size, with exposed thermal pad (not electrically connected). Pin numbering follows standard DB top-view orientation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2201IDB, TPS2202IDB offers enhanced per-slot control and tighter Vpp accuracy for next-gen flash, while MAX1681ESA+ lacks 12-V capability and requires external components - making TPS2201IDB the optimal balance of integration, PCMCIA compliance, and battery efficiency for dual-slot portable systems.

Availability

TPS2201IDB is available at Aetrix Electronics and suitable for notebook computers, PDAs, digital cameras, and handheld terminals requiring stable component supply for legacy PCMCIA interface designs.

Supply support for TPS2201IDB 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 PCMCIA interface design experience.

The TPS2201 product line was developed specifically for PC Card power management in portable computing platforms, delivering integrated VCC/Vpp switching, sequencing, and protection in a single IC to replace discrete MOSFETs and support PCMCIA 2.0/3.0 standards.

FAQ

What is the primary function of the TPS2201IDB in a PCMCIA system?

The TPS2201IDB serves as a dual-slot PC Card power interface switch that manages VCC (3.3 V/5 V) and Vpp (3.3 V/5 V/12 V) delivery with sequencing, discharge, and fault protection. It replaces discrete MOSFETs and fuses in notebook, PDA, and handheld designs - ensuring PCMCIA compliance while reducing BOM count and improving reliability. The TPS2201IDB integrates all necessary control logic, current limiting, and power-good reporting on a single die.

Does the TPS2201IDB require external capacitors for its charge pump?

No, the TPS2201IDB includes a fully integrated charge pump that generates internal gate-drive voltages from the 5-V VDD supply alone - eliminating the need for external capacitors. This allows the external 12-V rail to remain powered down except during flash memory programming or erasure, directly extending battery life in portable applications. The TPS2201IDB achieves this without compromising Vpp regulation accuracy or switching speed.

How does the TPS2201IDB meet PCMCIA 3.3-V/5-V transition requirements?

The TPS2201IDB meets PCMCIA 3.3-V/5-V transition requirements through break-before-make switching, programmable VCC logic inputs (A_VCC3/A_VCC5, B_VCC3/B_VCC5), and active ground discharge FETs on AVCC/BVCC outputs. These features ensure capacitors on 3.3-V-compatible cards discharge below 0.8 V before 3.3-V power is applied - preventing damage to sensitive logic. The TPS2201IDB's 100-ms discharge time satisfies the PC Card specification without external components.

What protection mechanisms does the TPS2201IDB provide against overcurrent conditions?

The TPS2201IDB provides dual-layer overcurrent protection: first, internal sense FETs linearly limit output current to 0.75–1.3 A (VCC) or 120–200 mA (Vpp) during faults - avoiding destructive latch-up or fuse blowout; second, it asserts the open-drain OC pin low to signal the host controller, enabling firmware-based diagnostics. If sustained overcurrent causes junction temperature to exceed 150°C, thermal shutdown disables all outputs until safe cooling occurs. The TPS2201IDB implements both functions without external circuitry.

Can the TPS2201IDB support mixed-voltage operation across its two slots?

Yes, the TPS2201IDB supports fully independent mixed-voltage operation: Slot A can deliver 3.3-V VCC with 12-V Vpp while Slot B simultaneously supplies 5-V VCC with 5-V Vpp. Each slot has dedicated logic inputs (A_VCC3/A_VCC5/A_VPP_PGM/A_VPP_VCC and B_ equivalents) and separate power-good outputs (APWR_GOOD/BPWR_GOOD). This enables heterogeneous PC Card configurations - such as a 3.3-V Wi-Fi card and 5-V modem - without shared rail interference. The TPS2201IDB maintains isolation and timing compliance for both slots concurrently.