UCC3895PWTR

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High-performance PWM Controller
• Package: TSSOP-16
• Essence: Regulates and controls power delivery in various applications
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 15V
• Output Voltage Range: 0V to 3.3V
• Operating Temperature Range: -40°C to +85°C
• Switching Frequency: Adjustable up to 1MHz
• Duty Cycle Range: 0% to 100%
• Maximum Output Current: 1A
• Protection Features: Overcurrent, Overvoltage, Undervoltage, Thermal Shutdown

Detailed Pin Configuration

The UCC3895PWTR has a total of 16 pins, which are as follows:

1. VDD: Power supply input
2. GND: Ground reference
3. COMP: Compensation pin for feedback control loop
4. CS: Current sense input for overcurrent protection
5. RT/CT: Timing components connection for frequency and duty cycle control
6. SS/TR: Soft-start and tracking control pin
7. FB: Feedback voltage input for regulation control
8. EN: Enable pin for turning the device on/off
9. SYNC: Synchronization input for external clock synchronization
10. VREF: Reference voltage output
11. ISENSE: Current sense output for monitoring load current
12. DRVH: High-side gate driver output
13. DRVL: Low-side gate driver output
14. BOOT: Bootstrap capacitor connection for high-side gate driver
15. HO: High-side MOSFET output
16. LO: Low-side MOSFET output

Functional Features

• High-performance PWM controller for power management applications
• Wide input voltage range allows flexibility in various systems
• Adjustable switching frequency and duty cycle for precise control
• Comprehensive protection features ensure system reliability
• Soft-start and tracking control for smooth power-up sequences
• Synchronization input enables synchronization with external clock

Advantages and Disadvantages

Advantages: - High-performance and reliable power management solution - Flexible input voltage range for versatile applications - Precise control over switching frequency and duty cycle - Comprehensive protection features enhance system safety - Smooth power-up sequences with soft-start and tracking control

Disadvantages: - Limited maximum output current of 1A - Requires external components for operation - Relatively small package size may limit heat dissipation capabilities

Working Principles

The UCC3895PWTR is a high-performance PWM controller that regulates and controls power delivery in various applications. It operates by generating a pulse-width modulated (PWM) signal based on the feedback received from the load. This PWM signal is then used to drive the high-side and low-side MOSFETs, which control the power flow to the load.

By adjusting the switching frequency and duty cycle of the PWM signal, the UCC3895PWTR can precisely regulate the output voltage. It also incorporates comprehensive protection features such as overcurrent, overvoltage, undervoltage, and thermal shutdown to ensure the safety and reliability of the system.

Detailed Application Field Plans

The UCC3895PWTR is commonly used in the following application fields:

1. Power Supplies: It can be utilized in various power supply designs, including AC/DC converters, DC/DC converters, and battery chargers.
2. Motor Control: The controller can be employed in motor control circuits to regulate the speed and direction of motors.
3. LED Lighting: It finds application in LED lighting systems, enabling efficient and precise control over the LED brightness.
4. Audio Amplifiers: The UCC3895PWTR can be used in audio amplifier circuits to regulate the power delivery and enhance audio performance.

Detailed and Complete Alternative Models

1. UCC3895PW: Similar to UCC3895PWTR, but available in a PDIP-16 package.
2. UCC3895PWG4: Similar to UCC3895PWTR, but available in a SOIC-16 package.
3. UCC3895PWG4: Similar to UCC3895PWTR, but available in a QFN-16 package.

These alternative models offer similar functionality and features as the UCC3895PWTR but may differ in package type and pin configuration.

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