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VIPER26LD
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VIPER26LD

Product Overview

  • Category: Power Management IC
  • Use: Voltage Regulator
  • Characteristics: High efficiency, low standby power consumption
  • Package: SO-16
  • Essence: Integrated Switching Regulator
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 4.5V to 30V
  • Output Voltage Range: 3.3V to 28V
  • Output Current: Up to 1A
  • Switching Frequency: 60kHz to 200kHz
  • Operating Temperature Range: -40°C to +150°C

Detailed Pin Configuration

The VIPER26LD has a total of 16 pins. The pin configuration is as follows:

  1. VCC: Supply voltage input
  2. GND: Ground reference
  3. FB: Feedback pin for output voltage regulation
  4. CS: Current sense input
  5. COMP: Compensation pin for loop stability
  6. SS: Soft-start pin for controlled startup
  7. EN: Enable pin for turning the device on/off
  8. NC: No connection
  9. NC: No connection
  10. NC: No connection
  11. NC: No connection
  12. NC: No connection
  13. NC: No connection
  14. NC: No connection
  15. NC: No connection
  16. NC: No connection

Functional Features

  • Integrated high-voltage power MOSFET
  • Built-in protection features such as overvoltage, overcurrent, and thermal shutdown
  • Low standby power consumption in idle mode
  • Adjustable output voltage through external resistor divider
  • Soft-start function for controlled startup
  • Wide input voltage range for versatile applications

Advantages and Disadvantages

Advantages

  • High efficiency, leading to reduced power dissipation
  • Compact package size for space-constrained applications
  • Wide input voltage range allows for flexibility in design
  • Integrated protection features enhance system reliability
  • Low standby power consumption helps meet energy efficiency requirements

Disadvantages

  • Limited output current capability (up to 1A)
  • Requires external components for proper operation
  • Higher cost compared to linear regulators

Working Principles

The VIPER26LD is a switching regulator that operates based on the principle of pulse width modulation (PWM). It converts the input voltage into a regulated output voltage by rapidly switching the integrated power MOSFET on and off. This switching action allows for efficient power conversion with minimal power loss.

The device uses a feedback mechanism to regulate the output voltage. The feedback pin (FB) monitors the output voltage and adjusts the duty cycle of the switching signal to maintain a stable output voltage despite changes in load or input voltage.

Detailed Application Field Plans

The VIPER26LD is commonly used in various applications where voltage regulation is required. Some of the typical application fields include:

  1. Power supplies for consumer electronics
  2. Industrial automation systems
  3. LED lighting applications
  4. Battery chargers
  5. Automotive electronics

Detailed and Complete Alternative Models

  • VIPER26HD: Similar to VIPER26LD but with higher output current capability (up to 2A)
  • VIPER27LD: Similar to VIPER26LD but with lower standby power consumption
  • VIPER28LD: Similar to VIPER26LD but with wider input voltage range

These alternative models offer different specifications and features to cater to specific application requirements.

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Senaraikan 10 soalan dan jawapan biasa yang berkaitan dengan aplikasi VIPER26LD dalam penyelesaian teknikal

Sure! Here are 10 common questions and answers related to the application of VIPER26LD in technical solutions:

  1. Q: What is VIPER26LD?
    A: VIPER26LD is a high-voltage converter IC designed for offline power supplies.

  2. Q: What are the key features of VIPER26LD?
    A: VIPER26LD features include integrated high-voltage startup, current mode PWM control, and built-in protections.

  3. Q: What is the input voltage range of VIPER26LD?
    A: The input voltage range of VIPER26LD is typically between 85V and 265V AC.

  4. Q: What is the output voltage range of VIPER26LD?
    A: The output voltage range of VIPER26LD can be adjusted using external components but is typically between 5V and 30V DC.

  5. Q: Can VIPER26LD handle high power loads?
    A: Yes, VIPER26LD can handle power loads up to 8W with proper heat sinking.

  6. Q: Does VIPER26LD have built-in protections?
    A: Yes, VIPER26LD has built-in protections such as overvoltage protection, overload protection, and thermal shutdown.

  7. Q: Can VIPER26LD be used in LED lighting applications?
    A: Yes, VIPER26LD is suitable for driving LED lighting applications due to its high-voltage capability and PWM control.

  8. Q: Is VIPER26LD compatible with dimming functionality?
    A: Yes, VIPER26LD can be used with external dimming circuits to enable dimming functionality in lighting applications.

  9. Q: Can VIPER26LD be used in battery charging applications?
    A: Yes, VIPER26LD can be used in battery charging applications by adjusting the output voltage and current limits accordingly.

  10. Q: Are there any evaluation boards available for VIPER26LD?
    A: Yes, STMicroelectronics provides evaluation boards and reference designs for VIPER26LD to facilitate its implementation in various applications.

Please note that the answers provided here are general and may vary depending on specific application requirements and design considerations.