Overview
The TPS2022DR is a high-side power distribution switch from Texas Instruments, designed for applications where heavy capacitive loads and short circuits are likely to be encountered. This device is part of the TPS202x family, which features 50-mΩ N-channel MOSFET high-side power switches. The TPS2022DR is controlled by a logic enable compatible with both 5-V and 3-V logic, and it includes an internal charge pump to manage the power-switch rise and fall times, minimizing current surges during switching.
The device offers robust protection features, including short-circuit and thermal protection, overcurrent logic output, and undervoltage lockout. It operates within a voltage range of 2.7 V to 5.5 V and is available in 8-pin SOIC and PDIP packages. The TPS2022DR is suitable for a wide range of applications requiring reliable power distribution and protection.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Operating Voltage Range | 2.7 V to 5.5 V | |
| Maximum Output Current | 1.5 A | |
| On-State Resistance (rDS(on)) | 33 mΩ (typical at VI(IN) = 5 V, TJ = 25°C, IO = 0.18 A) | |
| Rise Time | 6.1 ms (typical at VI(IN) = 5.5 V, CL = 1 μF, TJ = 25°C, RL = 10 Ω) | |
| Fall Time | 3.4 ms (typical at VI(IN) = 5.5 V, CL = 1 μF, TJ = 25°C, RL = 10 Ω) | |
| Enable Input Voltage (VIH/VIL) | 2 V / 0.5 V (for 2.7 V ≤ VI(IN) ≤ 4.5 V) | |
| Input Current (EN) | 0.5 μA (EN = 0 V or EN = VI(IN) – 0.5 V) | |
| Turn-On Time | 20 ms (CL = 100 μF, RL = 10 Ω) | |
| Turn-Off Time | 40 ms (CL = 100 μF, RL = 10 Ω) | |
| Current Limit Threshold | 1.5 A | |
| Thermal Protection | Automatic shutdown and recovery | |
| Operating Temperature Range | –40°C to 125°C | |
| Package Type | 8-Pin SOIC and PDIP |
Key Features
- High-side MOSFET power switch with 33 mΩ on-state resistance
- Logic-level enable input compatible with 5-V and 3-V logic
- Internal charge pump for controlled rise and fall times
- Short-circuit and thermal protection
- Overcurrent logic output (OC)
- Undervoltage lockout (UVLO)
- Maximum standby supply current of 10 μA
- No drain-source back-gate diode
- ESD protection: 2-kV human-body-model, 200-V machine-model
- Available in 8-pin SOIC and PDIP packages
Applications
The TPS2022DR is designed for various applications where reliable power distribution and protection are critical. These include:
- USB power switching and protection
- Power distribution in consumer electronics
- Automotive systems requiring robust power management
- Industrial control systems
- Medical devices requiring high reliability and safety
Q & A
- What is the operating voltage range of the TPS2022DR?
The TPS2022DR operates within a voltage range of 2.7 V to 5.5 V.
- What is the maximum output current of the TPS2022DR?
The maximum output current is 1.5 A.
- What is the on-state resistance of the TPS2022DR?
The on-state resistance (rDS(on)) is typically 33 mΩ at VI(IN) = 5 V, TJ = 25°C, and IO = 0.18 A.
- Does the TPS2022DR have thermal protection?
Yes, the device includes thermal protection with automatic shutdown and recovery.
- What are the package options for the TPS2022DR?
The device is available in 8-pin SOIC and PDIP packages.
- How does the TPS2022DR handle short-circuit conditions?
The device limits the output current to a safe level by switching into a constant-current mode and asserts the overcurrent (OC) logic output low when a short circuit is detected.
- What is the purpose of the internal charge pump in the TPS2022DR?
The internal charge pump controls the power-switch rise and fall times to minimize current surges during switching.
- Does the TPS2022DR have ESD protection?
Yes, it has 2-kV human-body-model and 200-V machine-model ESD protection.
- What is the typical rise time of the TPS2022DR?
The typical rise time is 6.1 ms at VI(IN) = 5.5 V, CL = 1 μF, TJ = 25°C, and RL = 10 Ω.
- How does the TPS2022DR handle undervoltage conditions?
The device includes undervoltage lockout (UVLO) to ensure the switch remains off until a valid input voltage is present.
