Overview
The TPS2044B, specifically the TPS2044BDG4 package, is a 4-channel power-distribution switch from Texas Instruments. This device is designed to manage power distribution in applications where heavy capacitive loads and short circuits are common. It features a 70-mΩ high-side MOSFET and supports continuous output currents up to 500 mA per channel. The TPS2044B is part of the TPS20xxB series, known for its robust protection features and efficient power management capabilities.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage (VI(IN)) | 2.7 | - | 5.5 | V |
| Continuous Output Current (IO(OUT)) | 0 | - | 500 | mA |
| Operating Junction Temperature (TJ) | -40 | - | 125 | °C |
| High-Side MOSFET Resistance | - | 70 | - | mΩ |
| Short-Circuit Output Current | 0.75 | - | 1.25 | A |
| Overcurrent Trip Threshold | 1.5 | - | 1.9 | A |
| Rise Time (tr) | 0.4 | 0.6 | 1.5 | ms |
| Fall Time (tf) | 0.05 | - | 0.5 | ms |
| Supply Current (Low-Level Output) | 0.5 | - | 2 | μA |
| Supply Current (High-Level Output) | 75 | - | 110 | μA |
Key Features
- 70-mΩ high-side MOSFET for efficient power distribution
- Continuous output current up to 500 mA per channel
- Thermal and short-circuit protection
- Accurate current limit (0.75 A minimum, 1.25 A maximum)
- Undervoltage lockout with hysteresis
- Deglitched fault report (OC) with no OC glitch during power-up
- Low standby supply current (1 μA or 2 μA depending on package)
- UL recognized (File Number E169910)
- Operating range: 2.7 V to 5.5 V
Applications
The TPS2044B is suitable for various applications where reliable power distribution and protection against heavy capacitive loads and short circuits are essential. These include:
- USB power switches
- Power distribution in consumer electronics
- Industrial control systems
- Automotive systems requiring robust power management
- Any system needing multiple channel power distribution with built-in protection features
Q & A
- What is the input voltage range for the TPS2044B?
The input voltage range for the TPS2044B is from 2.7 V to 5.5 V. - What is the maximum continuous output current per channel?
The maximum continuous output current per channel is 500 mA. - What kind of protection features does the TPS2044B offer?
The TPS2044B offers thermal and short-circuit protection, as well as undervoltage lockout. - How does the overcurrent protection work?
The overcurrent protection is based on an accurate current limit that trips between 0.75 A and 1.25 A. - What is the typical rise time for the TPS2044B?
The typical rise time is 0.6 ms. - What is the standby supply current for the TPS2044B?
The standby supply current is typically 1 μA or 2 μA depending on the package. - Is the TPS2044B UL recognized?
Yes, the TPS2044B is UL recognized with File Number E169910. - What are some common applications for the TPS2044B?
Common applications include USB power switches, power distribution in consumer electronics, industrial control systems, and automotive systems. - What is the operating junction temperature range for the TPS2044B?
The operating junction temperature range is from -40°C to 125°C. - How many channels does the TPS2044B support?
The TPS2044B supports 4 channels.
