UC3525BN

DC DC Switching Controllers Overview

The UC3525BN is a regulating pulse width modulator manufactured by Texas Instruments, designed for voltage-mode control applications. It operates within an input voltage range of 8 V to 35 V and supports switching frequencies from 100 Hz to 400 kHz. The device features two regulated outputs with a maximum duty cycle of 49% and provides a peak output current of 400 mA. Packaged in a 16-pin PDIP format, it functions across a temperature range of 0°C to 70°C.

DC DC Switching Controllers Feature Summary

• Voltage-mode PWM control architecture for stable regulation
• Dual output configuration supporting multiple converter topologies
• Integrated soft-start circuitry to limit inrush current
• High-current push-pull driver stage for direct gate drive

DC DC Switching Controllers Applications

• Push-pull DC-DC converters
• Half-bridge power supplies
• Full-bridge isolated converters
• Forward converter designs

DC DC Switching Controllers Procurement Notes

Verify the package type matches the required 16-pin DIP form factor. Confirm the suffix 'BN' indicates the standard commercial temperature grade (0°C to 70°C). Ensure the component meets RoHS compliance requirements if applicable to the assembly process. Cross-reference the manufacturer part number against official TI documentation to confirm pinout compatibility.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring dual-output voltage-mode control with moderate switching frequencies up to 400 kHz. It is suitable for designs utilizing push-pull or half-bridge topologies where a 49% maximum duty cycle is sufficient. Consider the 400 mA output drive capability when selecting external MOSFETs or transistors for the power stage.

DC DC Switching Controllers Part Context

The UC3525BN belongs to the UC3525 series of regulating pulse width modulators. This family includes variants such as the UC3525AN and UC3525ADWTR, which share similar functional architectures but differ in package types and temperature ratings. The series is widely used in industrial power supply designs requiring robust voltage-mode control capabilities.

DC DC Switching Controllers Replacement Considerations

The UC3525BNG4 is a verified lead-free variant of the UC3525BN with identical electrical specifications. Other compatible parts include the UC3525AN for through-hole applications and the UC3525ADWTR for surface-mount implementations.