UCC39002DR

Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High efficiency - Low power consumption - Wide input voltage range - Overcurrent protection - Thermal shutdown protection

Package: SOIC (Small Outline Integrated Circuit)

Essence: The UCC39002DR is a power management IC designed to provide efficient and reliable power management solutions for various applications.

Packaging/Quantity: The UCC39002DR is available in a standard SOIC package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 4.5V to 40V
• Output Voltage Range: 0.8V to 37V
• Maximum Output Current: 1A
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The UCC39002DR has the following pin configuration:

```

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| | --| VOUT | --| VIN | --| GND | --| EN | --| FB | --| COMP | --| SS | --| PG | --| CS | |___________| ```

Functional Features

1. Wide Input Voltage Range: The UCC39002DR can accept input voltages ranging from 4.5V to 40V, making it suitable for a wide range of applications.
2. Efficient Power Conversion: With its high efficiency design, the UCC39002DR minimizes power losses during voltage conversion, resulting in improved overall system efficiency.
3. Overcurrent Protection: The IC incorporates overcurrent protection, which safeguards the circuit against excessive current flow, preventing damage to the device and connected components.
4. Thermal Shutdown Protection: The UCC39002DR features thermal shutdown protection, which automatically shuts down the device if the temperature exceeds a certain threshold, preventing overheating and potential damage.
5. Flexible Output Voltage: The IC allows for adjustable output voltage within the range of 0.8V to 37V, providing flexibility in meeting specific application requirements.

Advantages

• High efficiency design reduces power losses
• Wide input voltage range accommodates various applications
• Overcurrent and thermal shutdown protection enhance system reliability
• Adjustable output voltage provides flexibility

Disadvantages

• Limited maximum output current (1A)
• Requires external components for complete power management solution

Working Principles

The UCC39002DR operates as a step-down (buck) converter, converting a higher input voltage to a lower output voltage. It utilizes a pulse-width modulation (PWM) control scheme to regulate the output voltage. The feedback (FB) pin monitors the output voltage and adjusts the duty cycle of the internal switch to maintain the desired output voltage level. The compensation (COMP) pin is used to stabilize the control loop and ensure proper transient response.

Application Field Plans

The UCC39002DR is suitable for a wide range of applications, including but not limited to: - Power supplies for industrial equipment - Automotive electronics - Telecommunications systems - Consumer electronics - LED lighting

Alternative Models

1. LM2596S-ADJ: Similar specifications and functionality, available in TO-263 package.
2. TPS54331: Higher maximum output current (3A), available in QFN package.
3. LT1376: Lower quiescent current (50µA), available in SOIC package.

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

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