UCC3585MTR

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Mode PWM Controller

Characteristics: - High-performance voltage mode PWM controller - Designed for use in power supply applications - Provides precise control over the output voltage and current - Offers various protection features to ensure safe operation

Package: 16-pin TSSOP (Thin Shrink Small Outline Package)

Essence: UCC3585MTR is a voltage mode PWM controller that enables efficient regulation of power supplies by providing accurate control over the output voltage and current.

Packaging/Quantity: The UCC3585MTR is typically sold in reels, with each reel containing 2500 units.

Specifications

• Input Voltage Range: 10V - 30V
• Output Voltage Range: 0.8V - 5.5V
• Maximum Output Current: 2A
• Switching Frequency: 200kHz - 1MHz
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The UCC3585MTR has a 16-pin configuration as follows:

1. VREF: Reference voltage input
2. COMP: Error amplifier output
3. FB: Feedback voltage input
4. CS: Current sense input
5. RT/CT: Timing resistor/capacitor connection
6. GND: Ground
7. SS/TR: Soft-start/tracking control
8. VCC: Power supply voltage input
9. SYNC: Synchronization input
10. NC: No connection
11. NC: No connection
12. NC: No connection
13. NC: No connection
14. NC: No connection
15. NC: No connection
16. DRV: Gate driver output

Functional Features

• Voltage mode control for precise regulation of output voltage
• Error amplifier with high gain and low offset for accurate feedback control
• Current sense input for monitoring and limiting the output current
• Soft-start feature to prevent excessive inrush current during startup
• Synchronization input for synchronization with an external clock signal
• Gate driver output for driving external power MOSFETs

Advantages and Disadvantages

Advantages: - High-performance controller for efficient power supply regulation - Wide input and output voltage range for versatile applications - Comprehensive protection features ensure safe operation - Compact and easy-to-use package design

Disadvantages: - Limited maximum output current of 2A may not be suitable for high-power applications - Requires external components for complete power supply implementation

Working Principles

The UCC3585MTR operates based on the voltage mode control principle. It compares the feedback voltage (FB) with a reference voltage (VREF) and generates an error signal. This error signal is amplified by the internal error amplifier (COMP) and used to adjust the duty cycle of the PWM signal. By controlling the duty cycle, the UCC3585MTR regulates the output voltage and maintains it at the desired level.

The current sense input (CS) monitors the output current and provides feedback for current limiting. The soft-start feature (SS/TR) gradually increases the duty cycle during startup to prevent excessive inrush current. The synchronization input (SYNC) allows the UCC3585MTR to synchronize its switching frequency with an external clock signal.

Detailed Application Field Plans

The UCC3585MTR is commonly used in various power supply applications, including:

1. Switching Mode Power Supplies (SMPS)
2. DC-DC Converters
3. LED Drivers
4. Battery Chargers
5. Industrial Power Systems

Its precise voltage regulation, current limiting capabilities, and comprehensive protection features make it suitable for a wide range of applications requiring efficient and reliable power supply control.

Detailed and Complete Alternative Models

1. UCC3583MTR: Similar to UCC3585MTR, but with a lower maximum output current of 1A.
2. UCC3587MTR: Similar to UCC3585MTR, but with a higher maximum output current of 3A.
3. UCC3589MTR: Similar to UCC3585MTR, but with additional features such as adjustable switching frequency and voltage tracking.

These alternative models offer different specifications and features, allowing users to choose the most suitable option based on their specific requirements.

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