Texas Instruments 8-Pin PDIP Current Mode PWM Controller, 500 kHz, 125V, Through Hole UC3845N

Texas Instruments UC3845N is a high-performance 8-pin PDIP current mode Pulse Width Modulation (PWM) controller. It is designed for use in isolated flyback power supplies offering both constant-voltage (CV) and constant-current (CC) output regulation which enhances transient response to large load steps.

This PWM controller supports a maximum switching frequency of 500 kHz, making it suitable for high-frequency power supply applications. The device features primary-side regulation (PSR), eliminating the need for an optocoupler, which simplifies power supply designs and increases reliability.

Operating at a supply current of 4mA, the UC3845N maintains efficient energy consumption. The device outputs a voltage of 5.2V and can supply up to 1A output current, supporting effective power management. Packaged in a standard 8-pin PDIP form factor with through-hole mounting, it is compatible with a broad range of PCB manufacturing processes.

The controller operates safely within a supply voltage range from -55V minimum to 125V maximum, and is specified for industrial operating temperatures ranging from 0°C to 70°C. It supports a maximum duty cycle of 50%, delivering optimal switching cycles for power components.

This device is part of the UC series by Texas Instruments and features no automotive standard certification, focusing on industrial and commercial power applications. Its compact physical dimensions (4.57 mm height, 9.81 mm length, and 6.35 mm width) allow integration into compact electronic assemblies.

Commonly used in power management and PWM control applications, this controller is ideal for industrial electronics, power supplies, laboratory instruments, and embedded system development where precise current mode control is required.

Primary-side regulation eliminates optocoupler necessity for simplified design. Flyback controller suitable for current control applications. Robust operation in industrial temperature range. Compact 8-pin PDIP through-hole mounting package.

Enables constant-voltage and constant-current output regulation. Supports 500 kHz maximum switching frequency for high efficiency. Low supply current reduces overall power consumption. Explore the extensive range of Power Management ICs at EnvMart for advanced electronics manufacturing and design solutions.