UC2625DWG4

Product Overview

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

Specifications

• Input Voltage Range: 8V to 35V
• Output Voltage Range: 5V to 20V
• Maximum Duty Cycle: 100%
• Operating Temperature Range: -40°C to 85°C
• Switching Frequency: 100kHz to 1MHz
• Output Current: Up to 2A

Detailed Pin Configuration

The UC2625DWG4 IC has a total of 16 pins. The pin configuration is as follows:

1. VREF: Reference voltage input
2. COMP: Error amplifier output
3. FB: Feedback voltage input
4. RT/CT: Timing resistor/capacitor connection
5. CT: Timing capacitor connection
6. RT: Timing resistor connection
7. OSC: Oscillator timing capacitor connection
8. GND: Ground reference
9. SYNC: Synchronization input
10. SS/TR: Soft-start/tracking control
11. VCC: Positive supply voltage
12. DRVH: High-side MOSFET driver output
13. DRVL: Low-side MOSFET driver output
14. HO: High-side MOSFET output
15. LO: Low-side MOSFET output
16. NC: No Connection

Functional Features

• High-performance pulse-width modulation (PWM) controller
• Provides precise regulation and control of power delivery
• Wide input voltage range allows for versatile applications
• Adjustable output voltage and duty cycle for flexibility
• Synchronization input for multi-phase operation
• Soft-start and tracking control for smooth power-up
• Error amplifier for accurate feedback control

Advantages and Disadvantages

Advantages: - High-performance and precise power management - Wide input voltage range for versatile applications - Adjustable output voltage and duty cycle for flexibility - Synchronization input allows for multi-phase operation - Soft-start and tracking control for smooth power-up

Disadvantages: - Limited maximum output current (up to 2A) - Requires external timing resistor and capacitor for operation

Working Principles

The UC2625DWG4 is a high-performance PWM controller that regulates and controls power delivery in various applications. It operates by comparing the feedback voltage (FB) with a reference voltage (VREF) and adjusts the duty cycle of the output waveform accordingly. This control mechanism ensures precise regulation of the output voltage.

The IC utilizes an error amplifier to compare the feedback voltage with the reference voltage and generate an error signal (COMP). This error signal is then used to adjust the duty cycle of the output waveform, which in turn regulates the output voltage.

Additionally, the UC2625DWG4 features a synchronization input (SYNC) that allows for multi-phase operation when multiple ICs are used in parallel. This enables efficient power delivery in high-current applications.

Detailed Application Field Plans

The UC2625DWG4 is commonly used in various power management applications, including:

1. Switching Power Supplies: The IC is utilized in switch-mode power supplies to regulate and control the output voltage efficiently.
2. DC-DC Converters: It is employed in DC-DC converters to convert one voltage level to another with high efficiency.
3. LED Lighting: The IC is used in LED lighting systems to provide precise control over the LED driver circuitry.
4. Motor Control: It finds application in motor control circuits to regulate the power delivered to motors, ensuring smooth operation.
5. Battery Charging: The IC is employed in battery charging circuits to regulate the charging process and protect the battery from overcharging.

Detailed and Complete Alternative Models

1. UC2625DW: Similar to UC2625DWG4, but available in a different package (SOIC-20).
2. UC2625N: DIP version of the UC2625DWG4, suitable for through-hole mounting.
3. UC3825: Higher-performance PWM controller with additional features such as adjustable dead-time control.

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