TPS2817DBVR

Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - Low-side power switch - Wide input voltage range - High output current capability - Overcurrent protection - Thermal shutdown protection

Package: SOT-23-5

Essence: The TPS2817DBVR is a low-side power switch IC used for power management applications. It offers a wide input voltage range, high output current capability, and various protection features.

Packaging/Quantity: The TPS2817DBVR is available in a SOT-23-5 package. It is typically sold in reels of 3000 units.

Specifications

• Input Voltage Range: 2.5V to 18V
• Output Current: Up to 1.5A
• Operating Temperature Range: -40°C to 125°C
• Quiescent Current: 10µA (typical)
• Rise/Fall Time: 3ns (typical)
• Overcurrent Protection Threshold: Adjustable
• Thermal Shutdown Temperature: 150°C (typical)

Pin Configuration

The TPS2817DBVR has the following pin configuration:

____ EN | | GND IN | | OUT NC |____| VCC

• EN: Enable pin (active high)
• IN: Input pin
• OUT: Output pin
• GND: Ground pin
• VCC: Supply voltage pin
• NC: No connection

Functional Features

• Low-side power switch with integrated control circuitry
• Enables or disables the power flow based on the state of the enable pin (EN)
• Wide input voltage range allows compatibility with various power sources
• High output current capability supports demanding loads
• Overcurrent protection prevents damage to the switch and load
• Thermal shutdown protection prevents overheating of the IC

Advantages and Disadvantages

Advantages: - Wide input voltage range allows versatile applications - High output current capability supports demanding loads - Overcurrent and thermal shutdown protection enhance reliability - Small SOT-23-5 package enables space-saving designs

Disadvantages: - Limited to low-side power switching applications - Not suitable for high-voltage applications (above 18V)

Working Principles

The TPS2817DBVR is a low-side power switch that controls the power flow between the input pin (IN) and the output pin (OUT). When the enable pin (EN) is high, the switch is turned on, allowing current to flow from the input to the output. Conversely, when the enable pin is low, the switch is turned off, interrupting the power flow.

The integrated control circuitry ensures smooth operation and provides protection features such as overcurrent and thermal shutdown. The overcurrent protection threshold can be adjusted to suit specific application requirements. In case of excessive current or high temperature, the switch automatically shuts down to prevent damage to the IC and connected load.

Detailed Application Field Plans

The TPS2817DBVR is commonly used in various power management applications, including:

1. Battery-powered devices: Enables efficient power distribution and control in portable electronics.
2. Industrial automation: Controls power supply to actuators, sensors, and other components in industrial systems.
3. Automotive electronics: Manages power flow in automotive subsystems, such as lighting, motors, and control modules.
4. Home appliances: Provides power switching capabilities in household devices like refrigerators, air conditioners, and washing machines.
5. LED lighting: Controls the power supply to LED drivers, ensuring efficient and reliable illumination.

Detailed and Complete Alternative Models

1. TPS2816DBVR: Similar low-side power switch IC with a lower output current capability (up to 1A).
2. TPS2818DBVR: Similar low-side power switch IC with a higher output current capability (up to 2A).
3. TPS28225DBVR: Low-side power switch IC with integrated diagnostics and fault protection features.

These alternative models offer different output current capabilities and additional features, providing flexibility for various application requirements.

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