TPS61311YFFR

Product Overview

Category

The TPS61311YFFR belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This IC is primarily used to regulate and control power supply in various electronic devices, such as smartphones, tablets, portable media players, and other battery-powered devices.

Characteristics

• High efficiency: The TPS61311YFFR offers high power conversion efficiency, ensuring optimal energy utilization.
• Small form factor: This IC comes in a compact package, making it suitable for space-constrained applications.
• Wide input voltage range: It can handle a wide range of input voltages, allowing flexibility in different power supply scenarios.
• Low quiescent current: The TPS61311YFFR has a low standby current, minimizing power consumption during idle periods.
• Overvoltage and overcurrent protection: It incorporates built-in protection mechanisms to safeguard against voltage spikes and excessive current flow.

Package and Quantity

The TPS61311YFFR is available in a small footprint, lead-free, 20-pin YFFR package. It is typically sold in reels or tubes, with a standard quantity of 2500 units per reel.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 1.8V to 4.2V
• Maximum Output Current: 500mA
• Switching Frequency: 1.2MHz
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The TPS61311YFFR features a 20-pin configuration with the following pin assignments:

1. EN (Enable)
2. VIN (Input Voltage)
3. PGND (Power Ground)
4. SW (Switch Node)
5. LX (Inductor Connection)
6. BST (Bootstrap Capacitor Connection)
7. FB (Feedback Voltage)
8. AGND (Analog Ground)
9. VOUT (Output Voltage)
10. PG (Power Good Indicator)
11. SS/TR (Soft Start/Tracking)
12. ISET (Current Limit Setting)
13. NC (No Connect)
14. NC (No Connect)
15. NC (No Connect)
16. NC (No Connect)
17. NC (No Connect)
18. NC (No Connect)
19. NC (No Connect)
20. VIN (Input Voltage)

Functional Features

• High-efficiency step-up converter: The TPS61311YFFR efficiently boosts the input voltage to a regulated output voltage, ensuring stable power supply for the connected device.
• Soft start and tracking: It incorporates soft start and tracking features to minimize inrush current during startup and provide smooth transitions between different operating modes.
• Power good indicator: The IC includes a power good indicator pin that signals when the output voltage is within the desired range, enabling system-level monitoring.
• Current limit protection: The TPS61311YFFR integrates current limit protection to prevent excessive current flow, safeguarding both the IC and the connected device.

Advantages and Disadvantages

Advantages

• High power conversion efficiency ensures optimal energy utilization.
• Compact package size allows for space-constrained applications.
• Wide input voltage range provides flexibility in power supply scenarios.
• Low quiescent current minimizes power consumption during idle periods.
• Built-in overvoltage and overcurrent protection enhance device reliability.

Disadvantages

• Limited maximum output current of 500mA may not be suitable for high-power applications.
• Requires external components, such as an inductor and capacitors, for proper operation.

Working Principles

The TPS61311YFFR operates as a step-up (boost) converter. It takes the input voltage from a power source and increases it to a regulated output voltage using an inductor, capacitors, and control circuitry. The IC employs pulse width modulation (PWM) techniques to efficiently regulate the output voltage while minimizing power losses.

During operation, the TPS61311YFFR continuously monitors the output voltage and adjusts the duty cycle of the switching transistor to maintain the desired voltage level. It also incorporates various protection mechanisms, such as overvoltage and overcurrent protection, to ensure safe and reliable operation.

Application Field Plans

The TPS61311YFFR finds extensive application in various battery-powered devices that require efficient power management. Some potential application fields include:

1. Smartphones and tablets
2. Portable media players
3. Wearable devices
4. Handheld gaming consoles
5. Digital cameras
6. Portable medical devices
7. IoT (Internet of Things) devices

Alternative Models

For users seeking alternative options, the following models offer similar functionality to the TPS61311YFFR:

1. TPS61310YFFR
2. TPS61312YFF