TOP234GN-TL

Product Overview

• Category: Integrated Circuit
• Use: Power Management
• Characteristics: High Efficiency, Low Standby Power, Wide Input Voltage Range
• Package: TO-220
• Essence: Switching Regulator Controller
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 9V to 38V
• Output Voltage Range: 5V to 24V
• Switching Frequency: 132kHz
• Maximum Output Power: 25W
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

1. VCC: Power Supply Input
2. GND: Ground
3. FB: Feedback Input
4. COMP: Compensation Pin
5. CS: Current Sense Input
6. DRAIN: Switching Transistor Drain
7. SOURCE: Switching Transistor Source
8. REF: Reference Voltage Output

Functional Features

• Integrated high-voltage power MOSFET
• Cycle-by-cycle current limit protection
• Auto-restart after fault shutdown
• Frequency jittering for low EMI
• Built-in soft-start function
• Over-temperature protection
• Under-voltage lockout with hysteresis

Advantages and Disadvantages

Advantages

• High efficiency, reducing power dissipation
• Low standby power consumption
• Wide input voltage range allows for versatile applications
• Compact TO-220 package for easy integration
• Comprehensive protection features ensure system reliability

Disadvantages

• Limited maximum output power of 25W
• Fixed switching frequency may not suit all applications
• Requires external components for complete power supply design

Working Principles

TOP234GN-TL is a switching regulator controller that utilizes a flyback topology to convert input voltage into a regulated output voltage. It operates by controlling the duty cycle of the internal power MOSFET, which switches on and off at a high frequency. This switching action allows for efficient energy transfer from the input to the output, resulting in high power conversion efficiency.

The controller incorporates various protection features such as cycle-by-cycle current limit, over-temperature protection, and under-voltage lockout. These ensure safe operation and protect the circuit from faults or abnormal conditions.

Detailed Application Field Plans

TOP234GN-TL is commonly used in various power management applications, including:

1. AC/DC Power Supplies
2. LED Lighting Systems
3. Industrial Control Systems
4. Telecom Equipment
5. Consumer Electronics

Its wide input voltage range and compact package make it suitable for both low-power and high-power applications. The integrated protection features enhance system reliability in demanding environments.

Detailed and Complete Alternative Models

1. TOP223YN: Similar functionality with lower maximum output power (15W)
2. TOP245PN: Higher maximum output power (50W) with similar features
3. TOP256EN: Enhanced version with additional protection features and higher power capability (100W)

These alternative models offer different power levels and may have slight variations in features, but they can serve as substitutes depending on specific application requirements.

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