Overview
The TPS22918DBVR is a single-channel load switch with integrated control features designed for power sequencing and load management in portable and battery-powered systems. It is widely used in battery management circuits, power rails for MCUs and sensors, and system power gating, where low ON resistance, controlled inrush current, and compact design are required. The TPS22918DBVT variant shares identical electrical performance and functionality, differing mainly in packaging and tape-and-reel format for manufacturing flexibility.
Core Parameters
| Parameter | Specification |
|---|---|
| Channel | Single Load Switch |
| Supply Voltage | 0.8 V to 5.5 V |
| ON Resistance (RON) | Typically 18 mΩ |
| Control Type | Enable (EN) pin control |
| Max Continuous Current | Up to 3 A |
| Package | VSON (DBV) |
| Operating Temperature | –40 °C to +125 °C |
These parameters make the device suitable for power gating and controlled power sequencing, especially where low voltage operation and low ON resistance are critical.
Features
- Ultra-low ON resistance (typically 18 mΩ) for minimal voltage drop
- Controlled inrush current to protect circuits and batteries
- Wide supply range from 0.8 V to 5.5 V
- Integrated power switch with enable control
- Compact VSON package for space-efficient designs
- ESD protection and robust thermal characteristics
- TPS22918DBVT option available with tape-and-reel packaging
Typical Application Scenarios
- Battery-powered and wearable electronics
- Power sequencing for microcontroller and sensor rails
- Load switching in IoT and embedded systems
- Power gating in multi-rail power architectures
- Controlled power delivery in portable communications
In portable and battery-powered designs, the TPS22918DBVR is often used downstream of a boost converter such as TPS61023DRLR. While TPS61023DRLR efficiently steps up battery voltage to a regulated system rail, TPS22918DBVR provides controlled load switching and power gating for individual subsystems, enabling precise power sequencing and reduced standby power consumption.
Performance Comparison
| Feature | TPS22918DBVR | Standard MOSFET Switch | Simple FET with Control |
|---|---|---|---|
| ON Resistance | Very Low | Higher | Variable |
| Inrush Control | Yes | No | No |
| Enable Control | Yes | Optional | Optional |
| Size | Small VSON | Larger | Varies |
| Power Efficiency | High | Moderate | Moderate |
Compared to simple MOSFET switches, the TPS22918DBVR provides controlled inrush current and integrated enable control, resulting in improved power stability and efficiency in battery-driven and multi-rail designs.
Conclusion
The TPS22918DBVR is an efficient and flexible load switch ideal for modern embedded and battery-powered applications. Its ultra-low ON resistance, integrated control, and compact package make it well suited for designs where power sequencing, load gating, and energy efficiency are required. The TPS22918DBVT variant offers identical performance with packaging optimized for automated assembly.
Manufacturer Profile
Texas Instruments (TI) is a global leader in analog and embedded processing semiconductor solutions. TI’s power management portfolio, including load switches like the TPS22918 series, is widely adopted across consumer electronics, industrial control, and IoT applications for robust performance and long-term reliability.
FAQ
Q1: What is the main function of the TPS22918DBVR?
A: It serves as a controlled load switch that manages power delivery and sequencing to downstream circuits, minimizing inrush current and improving power stability.
Q2: What voltage range does TPS22918DBVR support?
A: The device supports a supply voltage range from 0.8 V to 5.5 V, making it suitable for low-power and battery-powered systems.
Q3: What are the key performance advantages of this load switch?
A: It offers very low ON resistance, controlled inrush current, and enable control, resulting in efficient power gating and protection for sensitive circuitry.
Q4: How can the quality of the TPS22918DBVR be verified?
A: 7SEtronic follows a complete standardized quality inspection SOP, including label checks, visual inspection, and X-RAY analysis, ensuring product authenticity and reliability for reference.
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