UC3845B

Description

The UC3845B is a current-mode switching controller from UMW, designed for high-efficiency power conversion applications. It features a maximum switching frequency of 500kHz and can handle up to 1A of output current. The device offers several key benefits, including low ripple output voltage, fault-tolerant operation, and overtemperature protection with hysteresis. The UC3845B also provides for presetable frequency and synchronization, as well as pulse width modulation (PWM) for smooth outputs. Additionally, it features a wide input voltage range, overcurrent protection, and remote sense line for adjustable outputs. The device is suitable for applications requiring high-frequency synchronization, soft-start functionality, and programmable timers. Overall, the UC3845B is a versatile switching controller that can be used in a variety of power conversion applications, including DC-DC converters, AC-DC converters, and motor control systems.

Features

According to the product information, the features of the UC3845B are: - High Efficiency Power Conversion - Low Ripple Output Voltage - Fault Tolerant Operation - Low Standby Current Consumption - Overtemperature Protection with Hysteresis - Presetable Frequency and Synchronization - Low EMI Radiated Noise - Hot-Swap Capability without Damage - Pulse Width Modulation for Smooth Outputs - Wide Input Voltage Range - Overcurrent Protection - Remote Sense Line for Adjustable Outputs - High Frequency Synchronization - Soft-Start Functionality - Preset Timers for Cycle-by-Cycle Control - High Current Capable Switching Frequency - Programmable Soft-Start Time - Symmetric PWM for Reduced EMI Note that these features are presented in multiple categories or lists within the product information.

Package

The package type of UC3845B is SOP-8 (Small Outline Package - 8).

Manufacturer

According to the product information, the manufacturer of the UC3845B is UMW.

Applications

The UC3845B is a current-mode switching controller suitable for various applications, including:

• Power supplies (e.g., DC-DC converters, AC-DC converters)
• Motor control systems
• Lighting control systems
• Audio amplifiers
• Telecommunications equipment
• Industrial automation systems

Its high-frequency operation and fault-tolerant design make it a versatile component for a wide range of applications.

Equivalent

The equivalent products of UC3845B are:

• STP16LP75
• NCP1402
• LM5071
• UCC28051
• TPS54201

These ICs are current-mode switching controllers with similar specifications and functionality to the UC3845B.