VIPER28LDTR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High voltage converter, energy-efficient, compact size
• Package: SO-16
• Essence: Voltage regulator and controller
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 30V
• Output Voltage Range: 3.3V to 30V
• Maximum Output Current: 280mA
• Switching Frequency: 60kHz to 200kHz
• Operating Temperature Range: -40°C to +150°C

Detailed Pin Configuration

1. VDD: Power supply input
2. GND: Ground reference
3. FB: Feedback pin for output voltage regulation
4. COMP: Compensation pin for loop stability
5. CS: Current sense pin for current limiting
6. SS: Soft-start pin for controlled startup
7. EN/UVLO: Enable/Undervoltage lockout pin
8. VCC: Supply voltage for internal control circuitry
9. DRAIN: High-voltage power switch drain
10. SOURCE: High-voltage power switch source
11. VSENSE: Voltage sense pin for feedback compensation
12. VREF: Reference voltage output
13. VFB: Feedback voltage output
14. VCOMP: Compensation voltage output
15. VCS: Current sense voltage output
16. VSS: Ground reference

Functional Features

• High voltage conversion efficiency
• Overcurrent protection
• Overtemperature protection
• Undervoltage lockout
• Soft-start function for controlled startup
• Internal compensation for stable operation
• Wide input and output voltage range

Advantages and Disadvantages

Advantages

• High efficiency leads to energy savings
• Compact size allows for space-saving designs
• Wide input and output voltage range provides flexibility
• Comprehensive protection features ensure system reliability

Disadvantages

• Limited maximum output current may not be suitable for high-power applications
• Higher cost compared to some alternative models

Working Principles

The VIPER28LDTR is a voltage regulator and controller IC designed for power management applications. It operates by converting an input voltage within the range of 4.5V to 30V into a regulated output voltage between 3.3V and 30V. The IC utilizes a high-voltage power switch to efficiently control the voltage conversion process.

The device incorporates various protection mechanisms such as overcurrent and overtemperature protection, ensuring safe operation even under demanding conditions. The undervoltage lockout feature prevents the IC from operating when the input voltage falls below a specified threshold.

To facilitate controlled startup, the soft-start function gradually increases the output voltage during power-up, preventing sudden voltage spikes that could damage connected components. The internal compensation circuitry ensures stable operation by providing feedback regulation and loop stability.

Detailed Application Field Plans

The VIPER28LDTR finds application in various fields, including:

1. Power supplies for consumer electronics
2. Industrial automation systems
3. LED lighting solutions
4. Battery charging circuits
5. Automotive electronics
6. Telecommunications equipment

Its compact size, wide input/output voltage range, and comprehensive protection features make it suitable for diverse power management requirements.

Detailed and Complete Alternative Models

1. VIPER26LDTR: Similar functionality with a lower maximum output current of 200mA.
2. VIPER27LDTR: Similar functionality with a higher maximum output current of 350mA.
3. VIPER29LDTR: Similar functionality with a higher maximum output current of 400mA.

These alternative models offer different output current capabilities, allowing users to choose the most suitable option based on their specific application requirements.

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