Overview
The TPS2042B, produced by Texas Instruments, is a 2-channel, 0.5A loading, USB power switch with an active-low enable. This component is designed to provide reliable power distribution and protection in various electronic systems. It operates within a voltage range of 2.7V to 5.5V and features a high-side MOSFET with a low on-resistance of 70mΩ. The TPS2042B is particularly useful in applications requiring current limiting, thermal protection, and short-circuit protection.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Operating Voltage Range | 2.7V to 5.5V | |
| Continuous Current | 500mA | |
| On-Resistance (R_DS(ON)) | 70mΩ | |
| Overcurrent Trip Threshold | 1.55A to 2A | VIN = 5V, 100 A/s |
| Supply Current (Low-Level Output) | 0.5μA to 1μA | No load on OUT, VI(ENx) = 5.5V or 0V, TJ = 25°C |
| Supply Current (High-Level Output) | 50μA to 70μA | No load on OUT, VI(ENx) = 0V, TJ = 25°C |
| Leakage Current | 1μA | OUT connected to ground, VI(ENx) = 5.5V or 0V, TJ = 25°C |
| Reverse Leakage Current | 0μA | VI(OUTx) = 5.5V, IN = ground, TJ = 25°C |
Key Features
- 70mΩ High-Side MOSFET for low on-resistance.
- 500mA Continuous Current capability.
- Thermal and Short-Circuit Protection to ensure device reliability.
- Accurate Current Limiting to prevent overcurrent conditions.
- Active-Low Enable for easy control.
- Low Supply Current in both low-level and high-level output states.
Applications
The TPS2042B is suitable for a variety of applications, including:
- USB Power Distribution: Ideal for managing power in USB ports and hubs.
- Portable Electronics: Used in devices such as laptops, tablets, and smartphones to manage power efficiently.
- Industrial Control Systems: Provides reliable power switching and protection in industrial environments.
- Consumer Electronics: Found in devices like set-top boxes, gaming consoles, and other consumer electronics requiring robust power management.
Q & A
- What is the operating voltage range of the TPS2042B?
The TPS2042B operates within a voltage range of 2.7V to 5.5V. - What is the continuous current rating of the TPS2042B?
The continuous current rating is 500mA. - What is the on-resistance of the TPS2042B?
The on-resistance (R_DS(ON)) is 70mΩ. - Does the TPS2042B have overcurrent protection?
Yes, it has an overcurrent trip threshold ranging from 1.55A to 2A. - What are the supply current levels for the TPS2042B?
The supply current is 0.5μA to 1μA for low-level output and 50μA to 70μA for high-level output. - Is the TPS2042B protected against short circuits?
Yes, it includes short-circuit protection. - What is the leakage current of the TPS2042B?
The leakage current is 1μA when OUT is connected to ground. - What is the reverse leakage current of the TPS2042B?
The reverse leakage current is 0μA when VI(OUTx) = 5.5V and IN = ground. - What are common applications for the TPS2042B?
Common applications include USB power distribution, portable electronics, industrial control systems, and consumer electronics. - Is the TPS2042B available in different packages?
Yes, it is available in various packages, but specific availability may vary.
