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TPS61175PWPR
Product Overview
Category
The TPS61175PWPR belongs to the category of integrated circuits (ICs) and specifically falls under the power management ICs.
Use
This IC is primarily used for driving white LEDs in backlighting applications, such as LCD displays in various electronic devices.
Characteristics
- High efficiency voltage boost converter
- Adjustable output current up to 30mA
- Wide input voltage range: 2.7V to 18V
- Integrated soft-start function
- PWM brightness control
- Overvoltage protection
- Thermal shutdown protection
Package
The TPS61175PWPR is available in a small outline (SOIC) package, which is a surface-mount package with a width of 4.9mm and a length of 3.91mm.
Essence
The essence of the TPS61175PWPR lies in its ability to efficiently drive white LEDs, providing optimal backlighting for LCD displays while offering various protection features.
Packaging/Quantity
The TPS61175PWPR is typically packaged in reels, containing 2500 units per reel.
Specifications
- Input Voltage Range: 2.7V to 18V
- Output Current Range: Up to 30mA
- Operating Temperature Range: -40°C to 85°C
- Efficiency: Up to 90%
- Dimming Control: PWM (Pulse Width Modulation)
- Soft-Start Time: Adjustable
- Overvoltage Protection Threshold: 20V
- Thermal Shutdown Temperature: 150°C
Pin Configuration
The TPS61175PWPR has a total of 16 pins. The pin configuration is as follows:
- EN (Enable)
- FB (Feedback)
- GND (Ground)
- VDD (Power Supply)
- VIN (Input Voltage)
- VOUT (Output Voltage)
- SW (Switch Node)
- LX (Inductor Connection)
- AGND (Analog Ground)
- PGND (Power Ground)
- ISET (Current Set)
- DIM (Dimming Control)
- NC (No Connection)
- NC (No Connection)
- NC (No Connection)
- NC (No Connection)
Functional Features
- High efficiency voltage boost converter for driving white LEDs
- Adjustable output current allows flexibility in controlling LED brightness
- Integrated soft-start function prevents excessive inrush current during startup
- PWM brightness control enables precise dimming of the LEDs
- Overvoltage protection safeguards the IC and LEDs from voltage spikes
- Thermal shutdown protection prevents overheating and damage to the IC
Advantages and Disadvantages
Advantages
- Wide input voltage range allows compatibility with various power sources
- High efficiency minimizes power loss and extends battery life
- Adjustable output current provides flexibility in LED brightness control
- Integrated protection features enhance reliability and durability
- Small package size enables space-saving designs in electronic devices
Disadvantages
- Limited maximum output current may not be suitable for high-power LED applications
- Lack of built-in fault detection and reporting capabilities
Working Principles
The TPS61175PWPR operates as a voltage boost converter, converting the input voltage to a higher voltage required for driving white LEDs. It utilizes a pulse width modulation (PWM) technique to control the LED brightness. The feedback pin (FB) monitors the output voltage and adjusts the duty cycle of the PWM signal accordingly. The soft-start function gradually ramps up the output voltage to prevent excessive inrush current. The IC also incorporates overvoltage protection and thermal shutdown mechanisms to ensure safe operation.
Detailed Application Field Plans
The TPS61175PWPR finds application in various electronic devices that require backlighting for LCD displays. Some specific application fields include: - Mobile phones and smartphones - Tablets and laptops - Portable gaming consoles - Automotive infotainment systems - Industrial control panels - Medical equipment displays
Detailed and Complete Alternative Models
- TPS61176PWPR: Similar to TPS61175PWPR, but with a higher maximum output current of 60mA.
- TPS61178PWPR: A variant with an integrated I2C interface for digital dimming control and fault reporting capabilities.
- TPS61179PWPR: Offers a wider input voltage range of 2.7V to 24V, suitable for applications with higher voltage requirements.
These alternative models provide options with different specifications and features to cater to diverse application needs.
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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací TPS61175PWPR v technických řešeních
Sure! Here are 10 common questions and answers related to the application of TPS61175PWPR:
Q: What is TPS61175PWPR? A: TPS61175PWPR is a boost converter integrated circuit (IC) that provides a regulated output voltage from a lower input voltage.
Q: What is the input voltage range for TPS61175PWPR? A: The input voltage range for TPS61175PWPR is typically between 2.7V and 18V.
Q: What is the output voltage range for TPS61175PWPR? A: The output voltage range for TPS61175PWPR can be adjusted from 4V to 26V.
Q: What is the maximum output current of TPS61175PWPR? A: The maximum output current of TPS61175PWPR is typically around 1A.
Q: Can TPS61175PWPR operate in both step-up and step-down modes? A: No, TPS61175PWPR is specifically designed for step-up (boost) applications only.
Q: Does TPS61175PWPR have built-in protection features? A: Yes, TPS61175PWPR includes overvoltage protection, thermal shutdown, and short-circuit protection.
Q: What is the switching frequency of TPS61175PWPR? A: The switching frequency of TPS61175PWPR is typically set at 1.2MHz.
Q: Can TPS61175PWPR be used in battery-powered applications? A: Yes, TPS61175PWPR can be used in battery-powered applications as it has a low quiescent current and supports low input voltages.
Q: What type of package does TPS61175PWPR come in? A: TPS61175PWPR is available in a 20-pin HTSSOP package.
Q: Are there any evaluation boards or reference designs available for TPS61175PWPR? A: Yes, Texas Instruments provides evaluation modules and reference designs to help with the implementation of TPS61175PWPR in various applications.
Please note that the answers provided here are general and may vary depending on the specific datasheet and application requirements.