UC3842BN

Description：IC REG CTRLR BST FLYBK ISO 8-DIP
Series：-
Mfr：onsemi
Package：Tube

SKU:6b3fae06c47e Category: DC DC Switching Controllers Brand: onsemi

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Product introduction

UC3842BN is listed in the DC DC Switching Controllers range at ChipApex. The manufacturer field lists onsemi. Its product description is IC REG CTRLR BST FLYBK ISO 8-DIP. Review the specifications below when checking this part for your BOM.

DC DC Switching Controllers specifications for UC3842BN

Description：IC REG CTRLR BST FLYBK ISO 8-DIP
Series：-
Mfr：onsemi
Package：Tube
Output Type：Transistor Driver
Function：Step-Up, Step-Up/Step-Down
Output Configuration：Positive, Isolation Capable
Topology：Boost, Flyback
Number of Outputs：1
Output Phases：1
Voltage - Supply (Vcc/Vdd)：10V ~ 30V
Frequency - Switching：Up to 500kHz
Duty Cycle (Max)：96%
Synchronous Rectifier：No
Clock Sync：No
Serial Interfaces：-
Control Features：Frequency Control
Operating Temperature：0°C ~ 70°C (TA)
Mounting Type：Through Hole
Package / Case：8-DIP (0.300", 7.62mm)
Supplier Device Package：8-PDIP
Grade：-
Qualification：-

DC DC Switching Controllers datasheet and documents for UC3842BN

UC3842BN

DC DC Switching Controllers Overview

The UC3842BN is a high-performance current mode PWM controller IC designed for offline or DC-to-DC fixed-frequency control schemes. It integrates an internal oscillator, precision reference voltage source, and logic circuits for latch operation. The device features a PWM comparator with current limit control and a totem-pole output stage capable of sourcing or sinking peak currents. It supports flyback, boost, and forward topologies with a maximum duty cycle of 96%.

DC DC Switching Controllers Feature Summary

Current mode PWM control architecture
Integrated precision reference voltage source
Totem-pole output stage for high peak current drive
Automatic feedforward compensation

DC DC Switching Controllers Applications

Offline power supplies
DC-to-DC converters
Flyback topology designs
Boost converter applications

DC DC Switching Controllers Procurement Notes

Verify the manufacturer designation carefully as the UC3842 part number is produced by multiple vendors including STMicroelectronics and ON Semiconductor. Confirm the specific suffix indicates the correct package type and temperature range. Ensure the component matches the required electrical specifications for your design before procurement.

DC DC Switching Controllers Selection Notes

Select this component for designs requiring current mode control with minimal external parts. It is suitable for applications needing a maximum switching frequency up to 500 kHz. Consider the PDIP-8 package constraints and operating temperature range when finalizing the design.

DC DC Switching Controllers Part Context

This component belongs to the UC3842 series of current mode PWM controllers. It is widely used in power management applications where efficient energy conversion is critical. The device is available in through-hole packaging, making it suitable for prototyping and general-purpose industrial electronics.