TPS78625DCQR

Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low-dropout voltage regulator - High accuracy and low quiescent current - Thermal shutdown and current limit protection - Adjustable output voltage - Fast transient response

Package: DCQFN-10 (3mm x 3mm)

Essence: TPS78625DCQR is a voltage regulator IC that provides a stable output voltage with low dropout. It is commonly used in various electronic devices to regulate the voltage supplied to sensitive components.

Packaging/Quantity: The TPS78625DCQR is available in tape and reel packaging, with 2500 units per reel.

Specifications

• Input Voltage Range: 2.7V to 6.5V
• Output Voltage Range: 1.2V to 5.5V
• Dropout Voltage: 200mV (typical) at 1A load
• Quiescent Current: 75µA (typical)
• Output Current: Up to 1.5A
• Line Regulation: ±0.02% (typical)
• Load Regulation: ±0.05% (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The TPS78625DCQR has the following pin configuration:

```

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| | --| EN | --| GND | --| FB | --| NC | --| NC | --| VOUT | --| VIN | --| NC | --| PG | |___________| ```

Functional Features

1. Low Dropout Voltage: The TPS78625DCQR exhibits a low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.

2. High Accuracy and Low Quiescent Current: This voltage regulator provides high accuracy in maintaining the output voltage, while consuming minimal current when no load is present.

3. Thermal Shutdown and Current Limit Protection: The IC incorporates thermal shutdown and current limit protection mechanisms to prevent damage due to excessive temperature or current.

4. Adjustable Output Voltage: The output voltage of the TPS78625DCQR can be adjusted within a specified range, allowing flexibility in various applications.

5. Fast Transient Response: The voltage regulator responds quickly to changes in load conditions, ensuring stability and minimizing voltage fluctuations.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation - High accuracy and low quiescent current for precise voltage control - Thermal shutdown and current limit protection enhance reliability - Adjustable output voltage offers versatility - Fast transient response ensures stability

Disadvantages: - Limited maximum output current (up to 1.5A) - Restricted input voltage range (2.7V to 6.5V)

Working Principles

The TPS78625DCQR operates based on the principle of linear voltage regulation. It utilizes a pass transistor to regulate the output voltage by adjusting the resistance between the input and output terminals. The feedback mechanism continuously monitors the output voltage and adjusts the pass transistor accordingly to maintain the desired voltage level.

Detailed Application Field Plans

The TPS78625DCQR finds application in various electronic devices that require stable and regulated power supply. Some common application fields include:

1. Mobile Devices: Used to regulate voltage for processors, memory modules, and other components in smartphones, tablets, and portable media players.

2. Wireless Communication Systems: Provides stable voltage for RF modules, microcontrollers, and sensors in wireless communication devices such as routers, modems, and IoT devices.

3. Automotive Electronics: Regulates voltage for automotive control units, infotainment systems, and lighting modules, ensuring reliable operation in vehicles.

4. Industrial Automation: Used in industrial control systems, PLCs, motor drives, and sensors to maintain stable voltage levels and protect sensitive components.

5. Medical Equipment: Provides regulated power supply for medical devices like patient monitors, infusion pumps, and diagnostic equipment, ensuring accurate and safe operation.

Detailed and Complete Alternative Models

1. LM1117-3.3: A low dropout voltage regulator with an output voltage of 3.3V, suitable for various applications requiring a stable power supply.

2. LT1086: Adjustable linear voltage regulator capable of delivering up to 1.5A output current, offering flexibility in voltage regulation.

3. LM317: Popular adjustable voltage regulator IC that can provide a wide range of output voltages, commonly used in hobbyist projects and low-power applications.

4. TPS7A4700: Ultra-low noise, high PSRR (Power Supply Rejection Ratio) voltage regulator suitable for audio applications and sensitive analog