The TL3845 from Texas Instruments is a versatile and high-performance current-mode PWM controller that is widely used in AC/DC conversion, offline battery chargers, and DC/DC converters. This integrated circuit is designed to offer both flexibility and reliability for a wide range of power supply applications.
Key Features
- Adjustable Switching Frequency: The TL3845 allows for a programmable switching frequency that can be set from 10 kHz to 500 kHz, enabling designers to optimize their system for efficiency or component size.
- High Efficiency: With its integrated features and current-mode control, the TL3845 ensures efficient operation, which is crucial for reducing heat and improving system reliability.
- Internal Error Amplifier: An integrated error amplifier with a low output impedance allows for precise output voltage regulation, which is essential for sensitive electronics that require stable power.
- Under-Voltage Lockout (UVLO): To ensure system stability, the TL3845 includes UVLO protection that prevents the device from operating at insufficient voltages.
- Pulse-by-Pulse Current Limiting: The device provides enhanced protection with its pulse-by-pulse current limiting feature, which helps to prevent damage due to overcurrent conditions.
Applications
The TL3845 is ideal for a variety of applications, such as:
- Switching power supplies
- Power converters for personal computers
- Industrial power systems
- Green-mode power supplies
Technical Specifications
Parameter
Value
Output Voltage
Adjustable
Switching Frequency
10 kHz to 500 kHz
Package Type
PDIP, SOIC
Temperature Range
-40°C to 85°C
With its robust design and comprehensive set of features, the TL3845 PWM controller from Texas Instruments stands out as a top choice for designers looking to create efficient and reliable power supply solutions.
