TPS61021ADSGR

Product Overview

Category

The TPS61021ADSGR belongs to the category of integrated circuits (ICs) and specifically falls under the voltage regulators - switching regulators classification.

Use

This product is primarily used as a boost converter, which means it increases the input voltage to a higher output voltage level. It is commonly employed in various electronic devices where a stable and regulated power supply is required.

Characteristics

• High efficiency: The TPS61021ADSGR offers high conversion efficiency, ensuring minimal power loss during voltage conversion.
• Wide input voltage range: It can accept input voltages ranging from 0.9V to 6V, making it suitable for a wide range of applications.
• Adjustable output voltage: The output voltage can be adjusted using external resistors, providing flexibility in meeting specific requirements.
• Low quiescent current: The device features low standby current consumption, enhancing energy efficiency.

Package

The TPS61021ADSGR is available in a small-outline, thin package (VSON-8), which facilitates easy integration into compact electronic designs.

Essence

The essence of the TPS61021ADSGR lies in its ability to efficiently boost input voltages to higher levels, ensuring a stable and reliable power supply for various electronic applications.

Packaging/Quantity

This product is typically supplied in tape and reel packaging, with a quantity of 3000 units per reel.

Specifications

• Input Voltage Range: 0.9V to 6V
• Output Voltage Range: Adjustable (based on external resistors)
• Switching Frequency: 1.2MHz
• Maximum Output Current: 500mA
• Quiescent Current: 30µA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TPS61021ADSGR features an 8-pin package with the following pin configuration:

1. EN (Enable): This pin is used to enable or disable the boost converter.
2. FB (Feedback): The feedback pin provides voltage regulation by adjusting the output voltage based on external resistors.
3. SW (Switch): This pin connects to the inductor and serves as the switching node for the boost converter.
4. GND (Ground): The ground reference for the device.
5. LX (Inductor Connection): This pin connects to the inductor, which stores energy during the switching process.
6. PGND (Power Ground): The power ground reference for the device.
7. VOUT (Output Voltage): The regulated output voltage is provided through this pin.
8. VIN (Input Voltage): The input voltage is supplied through this pin.

Functional Features

• Soft Start: The TPS61021ADSGR incorporates a soft start feature, gradually ramping up the output voltage to prevent excessive current flow during startup.
• Overcurrent Protection: The device includes overcurrent protection, safeguarding against excessive load currents that could damage the circuit.
• Thermal Shutdown: In case of excessive temperature rise, the TPS61021ADSGR activates thermal shutdown to prevent damage to the device.
• Under-Voltage Lockout (UVLO): The UVLO feature ensures that the boost converter operates only when the input voltage is within the specified range, preventing improper operation at low input voltages.

Advantages and Disadvantages

Advantages

• High efficiency conversion
• Wide input voltage range
• Adjustable output voltage
• Compact package size
• Low quiescent current

Disadvantages

• Limited maximum output current (500mA)
• Requires external resistors for output voltage adjustment

Working Principles

The TPS61021ADSGR operates as a boost converter by utilizing an inductor, a switch, and a diode. During operation, the input voltage is switched on and off at a high frequency by the internal switch. This switching action causes the inductor to store energy during the "on" period and release it to the output during the "off" period, resulting in an increased output voltage.

Detailed Application Field Plans

The TPS61021ADSGR finds applications in various electronic devices, including but not limited to: - Battery-powered portable devices - Wireless communication systems - LED backlighting for displays - Industrial control systems - Automotive electronics

Detailed and Complete Alternative Models

1. TPS61022ADSGR: Similar to TPS61021ADSGR, but with a higher maximum output current of 800mA.
2. TPS61023ADSGR: A variant with adjustable output voltage and a lower quiescent current of 20µA.
3. TPS61024ADSGR: Offers a wider input voltage range (0.7V to 6V) compared to TPS61021ADSGR.

These alternative models provide similar functionality to the TPS