Overview
The TPS22918DBVT from Texas Instruments is a 5.5-V, 2-A load switch integrated circuit designed to manage power distribution efficiently. This device features a low on-resistance N-channel MOSFET, which minimizes voltage drop across the switch, making it suitable for low-voltage and high-current applications. The TPS22918DBVT is packaged in a small 6-pin SOT-23 package, allowing for compact design and visual inspection of solder joints. It operates over a wide ambient temperature range of –40°C to +105°C, making it versatile for various industrial and consumer applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 1 | 5.5 | V | |
| On-Resistance (RON) at VIN = 5 V | 52 | mΩ | ||
| On-Resistance (RON) at VIN = 3.3 V | 53 | mΩ | ||
| Maximum Continuous Switch Current | 2 | A | ||
| Quiescent Current at VIN = 3.3 V | 8.3 | 16 | µA | |
| Ambient Operating Temperature | –40 | 105 | °C | |
| ESD Performance | ±2 kV HBM, ±1 kV CDM | |||
| Package Type | SOT-23 (6-pin) |
Key Features
- Integrated single-channel load switch with configurable rise time and quick output discharge (QOD).
- Low on-resistance (RON) of 52 mΩ at VIN = 5 V and 53 mΩ at VIN = 3.3 V.
- Maximum continuous switch current of 2 A.
- Low quiescent current of 8.3 µA at VIN = 3.3 V.
- Low-control input threshold enables use of 1 V or higher GPIO signals.
- Configurable rise time with CT pin to reduce inrush current.
- Adjustable QOD pin to control the fall time of the output voltage.
- Small SOT-23-6 package for compact designs.
- ESD performance tested per JESD 22 – ±2-kV HBM and ±1-kV CDM.
Applications
- Industrial systems.
- Set-top boxes.
- Blood glucose meters.
- Electronic point of sale (POS) systems.
Q & A
- What is the input voltage range of the TPS22918DBVT?
The input voltage range is from 1 V to 5.5 V. - What is the typical on-resistance of the TPS22918DBVT at VIN = 5 V?
The typical on-resistance is 52 mΩ. - What is the maximum continuous switch current of the TPS22918DBVT?
The maximum continuous switch current is 2 A. - What is the quiescent current of the TPS22918DBVT at VIN = 3.3 V?
The quiescent current is typically 8.3 µA. - How does the configurable rise time feature work?
The configurable rise time is controlled by the CT pin, which helps reduce inrush current caused by large bulk load capacitances. - What is the purpose of the QOD pin?
The QOD pin allows for the configuration of the discharge rate of VOUT once the switch is disabled, providing design flexibility for power down and sequencing. - What is the package type of the TPS22918DBVT?
The package type is a 6-pin SOT-23. - What are the ESD performance ratings of the TPS22918DBVT?
The device is tested per JESD 22 with ratings of ±2-kV HBM and ±1-kV CDM. - What are some typical applications of the TPS22918DBVT?
Typical applications include industrial systems, set-top boxes, blood glucose meters, and electronic point of sale systems. - What is the operating temperature range of the TPS22918DBVT?
The ambient operating temperature range is from –40°C to +105°C.
