UCC2804PWTR

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: PWM Controller
• Package: TSSOP-14
• Essence: Voltage Mode PWM Controller
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 8V to 35V
• Output Voltage Range: 0V to 5.1V
• Operating Temperature Range: -40°C to +85°C
• Frequency Range: 50kHz to 1MHz
• Duty Cycle Range: 0% to 100%
• Maximum Output Current: 200mA
• Quiescent Current: 2.5mA

Detailed Pin Configuration

1. VREF: Reference Voltage Input
2. COMP: Error Amplifier Output
3. FB: Feedback Input
4. RT/CT: Timing Components Connection
5. GND: Ground
6. CS: Current Sense Input
7. SS/TR: Soft-Start/Shutdown Control
8. VCC: Supply Voltage Input
9. OUT: PWM Output
10. NC: No Connection
11. NC: No Connection
12. NC: No Connection
13. NC: No Connection
14. NC: No Connection

Functional Features

• Voltage mode control with adjustable duty cycle
• Internal error amplifier for precise regulation
• Soft-start and shutdown control
• Overcurrent protection
• Undervoltage lockout
• Thermal shutdown protection

Advantages

• Wide input voltage range allows for versatile applications
• Adjustable duty cycle provides flexibility in power management
• Internal error amplifier ensures accurate regulation
• Soft-start feature prevents excessive inrush current
• Overcurrent protection enhances system safety
• Undervoltage lockout protects against low input voltage conditions
• Thermal shutdown prevents IC damage due to excessive heat

Disadvantages

• Limited maximum output current may restrict certain high-power applications
• TSSOP-14 package may require careful handling during assembly

Working Principles

The UCC2804PWTR is a voltage mode PWM controller that regulates the output voltage by adjusting the duty cycle of the PWM signal. It compares the feedback voltage (FB) with the reference voltage (VREF) and generates an error signal. This error signal is amplified by the internal error amplifier and compared with the ramp signal generated by the timing components (RT/CT). The resulting PWM signal controls the power switch, which in turn regulates the output voltage.

Detailed Application Field Plans

The UCC2804PWTR is commonly used in various power management applications, including: 1. Switching Power Supplies 2. DC-DC Converters 3. LED Drivers 4. Battery Chargers 5. Motor Control Circuits

Detailed and Complete Alternative Models

1. UCC2804N
2. UCC2804D
3. UCC2804QDRQ1
4. UCC2804PW
5. UCC2804PWR

Note: These alternative models have similar specifications and pin configurations but may differ in package type or other minor features.

This entry provides an overview of the UCC2804PWTR, a voltage mode PWM controller used in power management applications. It includes basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.