The TL494 is a versatile pulse-width modulation (PWM) controller IC designed primarily for power-supply control applications. It is not specifically a 41V 250mA PWM controller IC as described, but rather operates within a supply voltage range of 7V to 40V and can handle output currents up to 200mA per output transistor. Here is a detailed overview of its features and applications:
Features:
- Comprehensive PWM Control Circuitry: Includes two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, and a 5V, 5%-precision regulator
- Adjustable Oscillator: Allows for flexible frequency control, which can be bypassed for external control
- Dead-Time Control: Provides a fixed offset for approximately 5% dead time, ensuring efficient switching
- Output Control: Supports both push-pull and single-ended output operations, with uncommitted output transistors capable of sourcing or sinking up to 200mA
- Operating Voltage Range: From 7V to 40V, making it suitable for various power supply configurations
Application:
The TL494 is ideal for:
- Power Supplies: Used in AC/DC, isolated, and non-isolated power supplies, including those with power factor correction (PFC)
- Desktop PCs and Servers: Commonly employed in power supplies for these systems
- Solar Micro-Inverters: Suitable for applications requiring efficient power conversion
- E-Bikes and Other Portable Devices: Used in power management systems for these devices
Package Included:
1 x TL494 SOP Pulse-Width Modulation Controller. Please note that the product image is for illustrative purposes only. The actual product may vary slightly in appearance!





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