UC3842BN Switching Controllers by STMicroelectronics – Precision PWM Control for Power Efficiency
The Switching Controllers UC3842BN by STMicroelectronics offer a highly reliable, current-mode PWM control solution for low- to medium-power applications. Optimized for off-line and DC-DC converters, this device integrates essential features such as undervoltage lockout, a trimmed oscillator, and low start-up current to support energy-efficient systems.
Explore how the UC3842BN can enhance your designs and meet your power management IC needs in this detailed overview.
Technical Specifications of UC3842BN
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Manufacturer: STMicroelectronics
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Part Number: UC3842BN
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Function: Current-Mode PWM Switching Controller
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Input Voltage Range: 7.6V – 30V
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Start-Up Current: <1 mA
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Operating Frequency: Programmable up to 500kHz
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Output Type: Totem-pole output
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Package: DIP-8 (Through-Hole)
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Category: Semiconductors, Integrated Circuits - ICs, Power Management ICs, Voltage Regulators & Voltage Controllers, Switching Controllers
The UC3842BN is ideal for designers seeking consistent switching performance and compact circuit integration.
Key Features of UC3842BN Switching Controllers
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Fixed-Frequency Current-Mode PWM Control
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Trimmed Internal Reference (5V ±1%)
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Fast Transient Response
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Undervoltage Lockout with Hysteresis
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Totem-Pole Output for Efficient Drive
These features enable the UC3842BN Switching Controllers to power a broad range of applications with excellent precision and efficiency.
Applications of UC3842BN
This STMicroelectronics IC is commonly used in:
As a part of power management ICs and voltage regulators & voltage controllers, this device provides safe and reliable voltage conversion.
Wiring and Connection Overview
Pin Configuration (DIP-8):
Designed with ease of implementation in mind, the UC3842BN Switching Controllers integrate seamlessly into new and existing designs.
Use Case Scenario: Energy-Efficient Battery Charger
Challenge: A manufacturer needed a reliable and efficient controller for a 50W battery charging system for handheld devices.
Solution: The UC3842BN Switching Controllers provided high-speed switching with minimal power loss and reduced external component count.
Result: The system achieved over 90% efficiency and met all EMI/ESD compliance requirements using just a single power management IC.
Also Available from Other Manufacturers
In addition to STMicroelectronics, you can find compatible Switching Controllers from:
Explore alternatives based on availability, budget, and design specs at Xon Electronics.
Download Datasheet for UC3842BN
Need detailed technical parameters?
[Download the UC3842BN Datasheet from Xon Electronics]
Why Buy from Xon Electronics?
When sourcing UC3842BN Switching Controllers, Xon Electronics offers:
- 100% Genuine STMicroelectronics Components
- Shipping to USA, India, Australia, Europe & more
- Volume Discounts for OEMs and Distributors
- Instant Datasheet Access
- Secure Online Ordering
Choose Xon Electronics for all your semiconductors, voltage regulators & controllers, and integrated circuits - ICs.
FAQs – UC3842BN Switching Controllers
Q1. What’s the maximum switching frequency of UC3842BN?
Up to 500kHz depending on external timing components.
Q2. Is the device suitable for both off-line and DC-DC converters?
Yes, it is widely used in both configurations.
Q3. Does it have undervoltage lockout protection?
Yes, it features UVLO with hysteresis for reliable startup.
Q4. What logic levels are supported at input?
It is compatible with standard TTL/CMOS logic levels.
Q5. Do you offer international shipping?
Yes, we ship to USA, India, Australia, Europe, and worldwide.
Conclusion
The UC3842BN Switching Controllers by STMicroelectronics offer exceptional performance, high efficiency, and reliable PWM control in compact DIP packaging. Ideal for energy-conscious and cost-effective designs, it supports a wide range of power management IC applications.
Buy now from Xon Electronics — your global distributor shipping to USA, India, Australia, Europe, and beyond.