UCC3808D-2

UCC3808D-2

Product Overview

Category

UCC3808D-2 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in power management applications.

Characteristics

• Low-power, high-performance voltage mode PWM controller
• Wide input voltage range
• Adjustable frequency and maximum duty cycle
• Integrated oscillator with programmable soft-start
• Overcurrent protection
• Undervoltage lockout
• Error amplifier with precision reference

Package

UCC3808D-2 is available in a small outline package (SOP) with 8 pins.

Essence

The essence of UCC3808D-2 lies in its ability to efficiently regulate and control power in various electronic systems.

Packaging/Quantity

This IC is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 12V
• Output Voltage Range: 0V to VCC
• Maximum Duty Cycle: 100%
• Frequency Range: 50kHz to 1MHz
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

1. COMP: Compensation pin for error amplifier
2. FB: Feedback pin for regulating output voltage
3. CS: Current sense pin for overcurrent protection
4. GND: Ground reference pin
5. RT/CT: Timing components connection pin
6. VCC: Power supply pin
7. OUT: Output pin for regulated voltage
8. SS/TR: Soft-start and shutdown control pin

Functional Features

• Voltage mode control for precise regulation
• Adjustable frequency and duty cycle for flexibility
• Integrated oscillator simplifies circuit design
• Soft-start feature prevents excessive inrush current
• Overcurrent protection ensures system safety
• Undervoltage lockout prevents operation below specified voltage

Advantages and Disadvantages

Advantages

• High-performance power management solution
• Wide input voltage range allows for versatile applications
• Adjustable frequency and duty cycle provide flexibility
• Integrated protection features enhance system reliability
• Compact SOP package saves board space

Disadvantages

• Limited output voltage range (0V to VCC)
• Requires external timing components for frequency adjustment
• Not suitable for high-power applications

Working Principles

UCC3808D-2 operates on the principle of voltage mode control. It compares the feedback voltage with a reference voltage to generate an error signal. This error signal is then amplified and used to adjust the duty cycle of the PWM signal, which regulates the output voltage. The integrated oscillator sets the switching frequency, while the soft-start feature gradually ramps up the output voltage during startup.

Detailed Application Field Plans

UCC3808D-2 finds extensive use in various power management applications, including:

1. Switching power supplies
2. DC-DC converters
3. Battery chargers
4. LED drivers
5. Industrial automation systems
6. Automotive electronics

Detailed and Complete Alternative Models

1. UCC3808D-1: Similar to UCC3808D-2 but with a different pin configuration.
2. UCC3809D: Higher current capability version of UCC3808D-2.
3. UCC2808D-2: Similar functionality but optimized for higher voltage applications.

These alternative models offer similar features and can be considered as substitutes for UCC3808D-2 depending on specific requirements.

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