Overview
The TPS2044B, produced by Texas Instruments, is a 4-channel power-distribution switch designed for applications requiring multiple power switches in a single package. This device is part of the TPS20xxB series and is particularly suited for scenarios involving heavy capacitive loads and short circuits. The TPS2044B features an active-low enable input and operates within a voltage range of 2.7V to 5.5V, making it versatile for various power management needs.
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 | - | 80 | - | mΩ |
| Short-Circuit Output Current (IOS) | 0.75 | 1 | 1.25 | 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
- High-Side MOSFET Switches: 80mΩ N-channel MOSFETs for efficient power distribution.
- Current Limitation: Accurate current limit with a minimum of 0.75A and a maximum of 1.25A.
- Thermal and Short-Circuit Protection: Automatic shutdown in case of thermal overload or short circuits.
- Undervoltage Lockout: Ensures the switch remains off until valid input voltage is present.
- Enable Input: Active-low enable input for controlling the power switch.
- Overcurrent Reporting: Open-drain output for reporting overcurrent conditions.
- Low Standby Supply Current: Maximum standby supply current of 2μA.
- Wide Operating Range: Operating temperature range from -40°C to 85°C.
Applications
- Heavy Capacitive Loads: Ideal for applications with high capacitive loads.
- Short-Circuit Protections: Suitable for scenarios where short circuits are likely to occur.
- USB Power Switches: Can be used as USB power switches due to its compatibility with USB voltage ranges.
- Power Distribution Systems: Used in power distribution systems requiring multiple power switches in a single package.
Q & A
- What is the operating voltage range of the TPS2044B?
The TPS2044B operates within a voltage range of 2.7V to 5.5V.
- What is the continuous output current of the TPS2044B?
The continuous output current is up to 500mA.
- Does the TPS2044B have thermal protection?
- How does the TPS2044B handle short circuits?
The device limits the output current to a safe level and switches into a constant-current mode during short circuits.
- What is the typical rise time of the TPS2044B?
The typical rise time is 0.6ms.
- Does the TPS2044B have undervoltage lockout?
- What is the standby supply current of the TPS2044B?
The maximum standby supply current is 2μA.
- What are the typical applications of the TPS2044B?
It is used in applications with heavy capacitive loads, short-circuit protections, and as USB power switches.
- How many channels does the TPS2044B have?
The TPS2044B is a 4-channel power-distribution switch.
- What is the operating temperature range of the TPS2044B?
The operating temperature range is from -40°C to 85°C.
