UCC3808ADTR-2

Product Overview

Category

UCC3808ADTR-2 belongs to the category of integrated circuits (ICs).

Use

This product 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 soft-start function
• Overcurrent protection
• Undervoltage lockout

Package

UCC3808ADTR-2 is available in a small outline package (SOT-23-6).

Essence

The essence of UCC3808ADTR-2 lies in its ability to efficiently control and regulate power in various electronic devices.

Packaging/Quantity

This product is typically packaged in reels, with 3000 units per reel.

Specifications

• Input Voltage Range: 4.5V to 12V
• Output Voltage Range: 0.8V to VCC - 2V
• Maximum Duty Cycle: 100%
• Operating Temperature Range: -40°C to 85°C
• Switching Frequency Range: 50kHz to 1MHz

Pin Configuration

UCC3808ADTR-2 has six pins arranged as follows:

____ EN |1 6| GND FB |2 5| VCC RT |3 4| CT ----

1. EN: Enable pin for turning the device on/off.
2. FB: Feedback pin for voltage regulation.
3. RT: Timing resistor pin for setting the oscillator frequency.
4. CT: Timing capacitor pin for setting the oscillator frequency.
5. VCC: Power supply pin.
6. GND: Ground pin.

Functional Features

• Voltage Mode PWM Control: UCC3808ADTR-2 utilizes voltage mode control to regulate the output voltage.
• Adjustable Frequency: The frequency of operation can be adjusted according to the application requirements.
• Soft-Start Function: Integrated soft-start function prevents excessive inrush current during startup.
• Overcurrent Protection: This feature safeguards the circuit from excessive current flow.
• Undervoltage Lockout: UCC3808ADTR-2 includes undervoltage lockout to ensure proper operation under low voltage conditions.

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 reliability

Disadvantages

• Limited output voltage range
• SOT-23-6 package may not be suitable for all applications
• Requires external components for complete functionality

Working Principles

UCC3808ADTR-2 operates based on the voltage mode control technique. It compares the feedback voltage with a reference voltage to generate an error signal. This error signal is then used to adjust the duty cycle of the PWM signal, which regulates the output voltage. By adjusting the timing resistor (RT) and timing capacitor (CT), the switching frequency can be set within a specific range.

Detailed Application Field Plans

UCC3808ADTR-2 finds applications in various fields, including: 1. Power supplies for consumer electronics 2. Battery chargers 3. LED lighting systems 4. Industrial automation equipment 5. Motor control circuits

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to UCC3808ADTR-2 include: 1. LM2576-ADJ 2. LT1073 3. MC34063A 4. TPS5430

These alternatives can be considered based on specific application requirements and availability.

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