Overview
The TPS22917DBVR is an ultra-low on-resistance load switch from Texas Instruments, designed for portable electronic devices, battery-powered systems, and low-power applications. This device integrates an N-channel MOSFET and provides controlled turn-on functionality, effectively reducing system startup inrush current while enabling efficient power path management.
The TPS22917DBVR supports a wide input voltage range and features low quiescent current, fast response, and a small package, making it ideal for power control applications in smartphones, tablets, wireless modules, SSDs, and embedded systems. Its high efficiency and simplified design capabilities have made it a common solution in modern low-voltage power management systems.
Core parameters
| Parameter | Value |
| Product Type | Load switch |
| Input voltage range | 1V to 5.5V |
| Maximum output current | 2A |
| On-resistance (RON) | Approximately 90mΩ |
| Static current | Extremely low |
| Control method | Enable control (ON/OFF) |
| Output discharge function | support |
| Startup method | Controlled soft boot |
| Protection function | Reverse current blocking |
| Encapsulation type | SOT-23-5 (DBV) |
| Operating temperature range | -40°C to +85°C |
| Environmental standards | RoHS compliant |
Features
Ultra-low on-resistance design
The TPS22917DBVR integrates a low-RON MOSFET, which can effectively reduce conduction losses and system heat generation, and improve overall power efficiency.
Controlled soft start reduces inrush current
The device supports controlled startup, which limits the inrush current during startup, helping to protect the power system and improve stability.
Extremely low quiescent current optimizes battery life
The low IQ design is particularly suitable for battery-powered devices, reducing standby power consumption and extending system battery life.
Output fast discharge function
When the output is turned off, the internal fast discharge circuit can quickly release the output charge, ensuring reliable system shutdown.
Small packages are suitable for high-density designs
Featuring a compact SOT-23-5 package, it saves PCB space and is ideal for portable and ultra-thin electronic product designs.
Typical application scenarios
Portable electronic devices
Smartphones, tablets, and wearable devices.
Battery-powered system
Lithium battery power supply and mobile terminal power management.
SSDs and storage devices
Low-voltage storage module power path control.
Wireless communication module
Power management for Wi-Fi, Bluetooth, and RF modules.
Embedded systems
MCU peripheral power supply and low-power control system.
Comparative Advantage Analysis
| Performance indicators | TPS22917DBVR | Common discrete MOSFET solutions |
| On resistance | Low (approximately 90mΩ) | higher |
| soft start function | support | Normally none |
| Static power consumption | Extremely low | medium |
| Output discharge function | built-in | External implementation required |
| PCB area | Small | Larger |
| System integration | high | generally |
The TPS22917DBVR is significantly superior to traditional discrete load switching solutions in terms of power consumption control, system protection, and design simplification.
Manufacturer Profile: Texas Instruments
Texas Instruments (TI) is a leading global manufacturer of analog and power management semiconductors, with a comprehensive product portfolio in load switches, DC/DC converters, and embedded power solutions. The TPS series of products, known for their high efficiency, stability, and mature ecosystem, are widely used in both industrial and consumer electronics markets.
Why choose TPS22917DBVR?
● Ultra-low on-resistance reduces system losses
● Soft-start function reduces inrush current
● Extremely low quiescent current optimizes battery life
● Integrated output discharge function
● Small package suitable for compact designs
● TI original quality and long-term supply support
Frequently Asked Questions (FAQ)
Q1: Is the TPS22917DBVR suitable for battery-powered devices?
Yes. This device features low quiescent current and high efficiency, making it ideal for smart devices, wearables, and other battery-powered systems.
Q2: What is the function of soft start?
Soft start can limit inrush current when the output is turned on, avoid instantaneous drop in input voltage or system abnormality, and improve the overall power supply stability and reliability.
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