TPS61091RSAR

Product Overview

Category

The TPS61091RSAR 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 is designed to step up or increase the input voltage to a higher output voltage level.

Characteristics

• High efficiency: The TPS61091RSAR offers high conversion efficiency, making it suitable for applications where power conservation is crucial.
• Wide input voltage range: It can operate with input voltages ranging from 0.7V to 5.5V, providing flexibility in various power supply scenarios.
• Adjustable output voltage: The output voltage can be adjusted within a range of 1.8V to 5.5V, allowing customization based on specific requirements.
• Low quiescent current: The device has a low quiescent current, enabling power-saving operation during standby or idle modes.
• Overcurrent protection: It incorporates overcurrent protection to safeguard against excessive current flow, ensuring the safety and reliability of the system.

Package and Quantity

The TPS61091RSAR is available in a small outline package (SOT-23-6), which provides compactness and ease of integration into space-constrained designs. It is typically sold in reels, with each reel containing 3000 units.

Specifications

• Input Voltage Range: 0.7V to 5.5V
• Output Voltage Range: 1.8V to 5.5V
• Switching Frequency: Up to 2MHz
• Quiescent Current: 17µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The TPS61091RSAR features a six-pin SOT-23 package with the following pin configuration:

1. EN (Enable): Enable control pin for turning the device on or off.
2. FB (Feedback): Feedback pin for adjusting the output voltage.
3. SW (Switch): Switching node connection for the boost converter.
4. GND (Ground): Ground reference for the device.
5. VIN (Input Voltage): Input voltage supply pin.
6. VOUT (Output Voltage): Output voltage pin.

Functional Features

• Soft Start: The TPS61091RSAR incorporates a soft start function to limit inrush current during startup, preventing potential damage to the system.
• Power Good Indicator: It includes a power good indicator pin that provides a signal indicating when the output voltage is within the desired range.
• Adjustable Output Voltage: The output voltage can be easily adjusted using an external resistor divider network connected to the feedback pin.
• Overtemperature Protection: The device features overtemperature protection, which shuts down the converter if the temperature exceeds a safe threshold.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption.
• Wide input voltage range allows for versatile applications.
• Compact package enables easy integration into space-constrained designs.
• Overcurrent protection enhances system reliability.

Disadvantages

• Limited output voltage range compared to some other boost converters.
• SOT-23 package may have thermal limitations in high-power applications.

Working Principles

The TPS61091RSAR operates as a step-up (boost) converter by utilizing a switching regulator topology. It converts the input voltage to a higher output voltage level through the use of an inductor, a diode, and a capacitor. The switching action controls the energy transfer from the input to the output, resulting in the desired voltage boost.

Application Field Plans

The TPS61091RSAR finds applications in various fields, including: 1. Battery-powered devices: It can be used to efficiently boost the battery voltage to power components requiring higher voltages. 2. Portable electronics: The compact size and low quiescent current make it suitable for portable devices such as smartphones, tablets, and wearables. 3. IoT devices: With its wide input voltage range, it can be employed in IoT applications where different power sources are utilized.

Alternative Models

Other alternative models that offer similar functionality to the TPS61091RSAR include: - TPS61092RSAR - TPS61093RSAR - TPS61094RSAR

These models share comparable specifications and pin configurations, providing flexibility in choosing the most suitable option for specific design requirements.

In conclusion, the TPS61091RSAR is a high-efficiency boost converter IC with a wide input voltage range and adjustable output voltage. Its compact package, overcurrent protection, and various functional features make it an ideal choice for battery-powered devices, portable electronics, and IoT applications.

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