TL494CN

The TL494CN from Motorola Semiconductor is a versatile pulse width modulation (PWM) control circuit designed for SWITCHMODE power supply applications. This integrated circuit features a complete PWM control circuitry, including an on-chip oscillator, error amplifiers, and a 5.0 V reference. It offers adjustable deadtime control and uncommitted output transistors rated to 500 mA source or sink.

Key electrical specifications include a maximum power supply voltage of 42 V and a collector output voltage of up to 42 V. The output transistors can source or sink up to 500 mA. The device operates over a wide ambient temperature range, with specific limits depending on the variant, such as 0 to +70 °C for the TL494C.

The TL494CN is available in PDIP-16 and SOIC-16 packages, supporting surface mount and through-hole mounting types respectively. Its design facilitates output control for push-pull or single-ended operation, making it suitable for various power supply designs. The circuit also includes undervoltage lockout protection.

This component is well-suited for applications requiring precise power supply control, such as in switch-mode power supplies, voltage regulators, and DC-to-DC converters. Its robust feature set and wide operating conditions make it a reliable choice for demanding power management tasks.