Texas Instruments 16-Pin PDIP 2-Channel Voltage Mode PWM Controller, 400 kHz, 4.5-35 V UC3525AN

Texas Instruments UC3525AN is a high-performance 16-pin PDIP 2-channel voltage mode PWM controller ideally suited for power management applications such as isolated flyback converters. It features a maximum switching frequency of 400 kHz and supports a supply voltage range from 4.5 V up to 35 V, making it versatile for varied industrial and electronic use cases.

This PWM controller integrates primary-side regulation (PSR) eliminating the need for an optocoupler, which simplifies design complexity and increases reliability. It provides constant-voltage and constant-current output regulation to improve transient response under heavy load conditions.

Each of the two output channels can handle a maximum output current of 400 mA with a maximum duty cycle of 49%, enabling efficient power control. The device consumes a low supply current of 4 mA, contributing to energy-efficient operations.

Housed in a standard 16-pin PDIP package for through-hole mounting, the controller has compact physical dimensions of 19.3 mm length, 6.35 mm width, and 4.57 mm height, suitable for PCB layouts where space is constrained.

Operating temperature range from 0°C to 70°C makes it reliable for commercial and light industrial environment applications. The controller belongs to the UC series from Texas Instruments and does not carry automotive or formal industry approvals but maintains robustness in typical power management roles.

Common uses include switch mode power supplies, LED lighting control, and industrial power regulation systems. The UC3525AN’s design supports voltage mode PWM control with low power consumption and steady output, well suited for controlling isolated flyback power supplies and other DC-DC converter topologies.

Operates at maximum switching frequency of 400 kHz. Low supply current of 4 mA ensures efficient power usage. Dual output channels capable of 400 mA current each. Through hole PDIP package with 16 pins for easy integration.

Primary-side regulation improves transient response and simplifies design. Voltage mode PWM controller type for versatile applications. Standard operating temperature: 0°C to 70°C. Compact size with 19.3 mm length, 6.35 mm width, and 4.57 mm height.

Suitable for industrial, electronic, and power supply manufacturing applications. Explore more power management ICs and PWM Controllers to find components suited to your industrial, laboratory, and commercial electronic projects at EnvMart.