This document describes the features and characteristics of TPS2220A, TPS2223A, TPS2224A, and TPS2226A CardBus power-interface switches. These switches allow controlled distribution of 3.3V, 5V, and 12V voltage to each card slot and feature current-limiting and thermal protection.
The TPS2220A is a single‑slot CardBus power‑interface switch that distributes 3.3 V, 5 V, and 12 V to a PC Card slot while offering current‑limit and thermal‑protection features. The device is intended for notebook, desktop, and other PC Card applications such as barcode scanners and digital cameras.
The datasheet includes absolute maximum ratings, electrical characteristics, switching performance, functional block diagrams, pin assignments, and package options. It also contains lead‑free status information, recommended operating conditions, and an important notice about warranty and usage.
| Operating Ambient Temperature | -40°C to 85°C |
|---|---|
| Quiescent Current (typical) | 140 µA |
| Maximum Continuous Power Dissipation (DB‑24) | 890 mW |
| Thermal Shutdown Trip Point | 135 °C (hysteresis 10 °C) |
| Package Types | 24‑pin HTSSOP, 24‑ or 30‑pin SSOP, DB‑24, DB‑30, PWP‑24, PWP‑30 |
It is a single‑slot CardBus power‑interface switch that distributes 3.3 V, 5 V, and 12 V to a PC Card slot and provides current‑limit and thermal‑protection features.
The device trips at a thermal shutdown temperature of 135 °C with a hysteresis of 10 °C.