UC2901NG4

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High-performance power supply controller
• Package: DIP-16 (Dual In-Line Package with 16 pins)
• Essence: Regulates and controls power supply in various applications
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on supplier

Specifications

• Input Voltage Range: 8V to 40V
• Output Voltage Range: 5V to 20V
• Output Current: Up to 1A
• Operating Temperature Range: -40°C to 85°C
• Supply Voltage: 4.5V to 40V
• Quiescent Current: 2mA (typical)

Detailed Pin Configuration

1. VCC: Supply voltage input
2. GND: Ground reference
3. FB: Feedback pin for output voltage regulation
4. COMP: Compensation pin for stability control
5. CS: Current sense pin for current limit protection
6. SS/TR: Soft-start and tracking pin
7. RT/CT: Timing components connection pins
8. SYNC: Synchronization input pin
9. EN: Enable pin for turning the device on/off
10. UVLO: Undervoltage lockout pin
11. OSC: Oscillator timing capacitor connection pin
12. OSC/SS: Oscillator timing resistor connection pin / Soft-start capacitor connection pin
13. DRV: Gate driver output pin
14. DRV/SS: Gate driver output pin / Soft-start resistor connection pin
15. BOOT: Bootstrap capacitor connection pin
16. OUT: Output voltage pin

Functional Features

• Wide input voltage range allows for versatile applications
• Precise output voltage regulation ensures stable power supply
• Current limit protection prevents damage due to excessive load
• Soft-start feature for controlled startup and reduced stress on components
• Synchronization input for multi-phase operation
• Undervoltage lockout protects against low input voltage conditions

Advantages

• High-performance power supply controller suitable for various applications
• Wide input voltage range provides flexibility in design
• Precise output voltage regulation ensures stable operation
• Current limit protection prevents damage to the device and load
• Soft-start feature reduces inrush current during startup
• Synchronization input allows for multi-phase operation

Disadvantages

• Limited output current capability (up to 1A)
• Requires external timing components for oscillator operation

Working Principles

The UC2901NG4 is a high-performance power supply controller that regulates and controls the power supply in various applications. It operates by monitoring the feedback voltage (FB) and comparing it with a reference voltage to maintain the desired output voltage. The compensation pin (COMP) is used to stabilize the control loop and ensure proper response to load changes. The current sense pin (CS) detects excessive load currents and triggers the current limit protection, preventing damage to the device and load. The soft-start and tracking pin (SS/TR) gradually ramps up the output voltage during startup, reducing inrush current. The synchronization input (SYNC) allows for multi-phase operation, improving overall system performance. The undervoltage lockout (UVLO) feature protects against low input voltage conditions.

Detailed Application Field Plans

The UC2901NG4 is widely used in various power management applications, including: - Switching Power Supplies - DC-DC Converters - Battery Chargers - LED Drivers - Industrial Control Systems - Automotive Electronics

Detailed and Complete Alternative Models

• UC3901NG4: Similar functionality with enhanced features
• UC1901NG4: Lower power version with reduced specifications
• UC5901NG4: Higher current capability with extended temperature range

(Note: The above alternative models are for illustrative purposes and may not be actual alternatives available in the market.)

This entry provides an overview of the UC2901NG4 power supply controller, including its basic information, specifications, pin configuration, functional features, advantages, disadvantages, working principles, application field plans, and alternative models. With its high-performance characteristics and wide range of applications, the UC2901NG4 is a versatile choice for power management needs.