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Request evaluation samplesUC3842BN PMIC - Voltage Regulators - DC DC Switching Controllers by STMicroelectronics
UC3842BN is a PMIC - Voltage Regulators - DC DC Switching Controllers model from STMicroelectronics, presented on TrustCompo for buyers who need clear sourcing and review context before RFQ. This listing sits in the Integrated Circuits (ICs) / PMIC - Voltage Regulators - DC DC Switching Controllers product path. Known package information currently points to DIP under the STMicroelectronics brand listing. IC REG CTRLR PWM CM 8-MINIDIP. TrustCompo combines the available model, brand, hierarchy, and specification details around UC3842BN so buyers can move faster from review to quotation.
RoHS
Datasheet
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Documentation support
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Key specifications
Series
-
Min Quantity
1
Category
Integrated Circuits (ICs)Description
IC REG CTRLR PWM CM 8-MINIDIP
key Attributes
-
Datasheet
View UC3842BN DatasheetTechnical document
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Globally recognized certifications
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ISO 9001
Quality management processes for more consistent sourcing and handling.
AS9120B
Aerospace-focused distribution controls for traceability and reliability.
ISO 14001
Environmental management discipline across warehouse and operating workflows.
ESD Control
Electrostatic handling standards to help protect sensitive components.
Ordering workflow
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Product overview
Overview
The UC3842BN is a high-performance, fixed-frequency current-mode PWM (Pulse Width Modulation) controller designed for use in a variety of power supply applications. Manufactured by STMicroelectronics, this integrated circuit is particularly well-suited for off-line and DC-DC converter applications, including switch-mode power supplies (SMPS).
Key Features:
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Operating Voltage Range: The UC3842BN operates over a wide input voltage range, typically from 8V to 40V, making it versatile for different power supply designs.
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Current Mode Control: This controller employs current mode control, which enhances the system's response to load changes and provides inherent overcurrent protection. This feature allows for improved stability and transient response.
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Fixed Frequency Operation: The UC3842BN operates at a fixed switching frequency, typically around 100 kHz, which simplifies the design of the output filter and reduces electromagnetic interference (EMI).
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Integrated Features: The IC includes several integrated features such as:
- A high-speed comparator for PWM control.
- A reference voltage source (typically 5V) for biasing and feedback.
- A soft-start function to limit inrush current during startup.
- A dead-time control to prevent shoot-through in half-bridge configurations.
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Output Stage: The output stage of the UC3842BN is capable of driving external power MOSFETs directly, providing a low-impedance output for efficient switching.
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Thermal and Overcurrent Protection: The device includes thermal shutdown and overcurrent protection features, ensuring reliable operation under various conditions.
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Package Type: The UC3842BN is available in a 14-pin DIP (Dual In-line Package) form factor, which is suitable for through-hole mounting. This package design facilitates easy integration into various circuit boards.
Applications:
The UC3842BN is widely used in applications such as:
- AC-DC power supplies for consumer electronics.
- DC-DC converters for battery-powered devices.
- Power management systems in industrial equipment.
- Isolated and non-isolated power supply designs.
Performance Characteristics:
- Temperature Range: The operating temperature range is typically from -40°C to +125°C, allowing for use in a variety of environmental conditions.
- Efficiency: The current-mode control and fixed frequency operation contribute to high efficiency in power conversion, minimizing energy losses.
Conclusion:
The UC3842BN from STMicroelectronics is a robust and versatile PWM controller that provides essential features for designing efficient and reliable power supply systems. Its combination of current mode control, integrated protection features, and ease of use makes it a popular choice among engineers for various power management applications.
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Popular Specs Surfaced First
Export Classifications & Environmental
JESD-609 Code
e3
Export Classifications & Environmental
RoHS Status
ROHS3 Compliant
Export Classifications & Environmental
REACH SVHC
No SVHC
Export Classifications & Environmental
Moisture Sensitivity Level (MSL)
1 (Unlimited)
Export Classifications & Environmental
ECCN Code
EAR99
Product Parameter
Terminal Finish
Matte Tin (Sn) - annealed
JESD-609 Code
e3
RoHS Status
ROHS3 Compliant
REACH SVHC
No SVHC
Moisture Sensitivity Level (MSL)
1 (Unlimited)
ECCN Code
EAR99
Terminal Finish
Matte Tin (Sn) - annealed
Output Configuration
Positive
Analog IC - Other Type
SWITCHING CONTROLLER
Nominal Input Voltage
15V
Rise Time
50ns
Control Features
Frequency Control
Function
CURRENT-MODE
Frequency - Switching
Up to 500kHz
Number Of Backplanes
100 %
Voltage - Supply (Vcc/Vdd)
10V~30V
RF Family\/Standard
15V
Part Status
Active
Mounting Type
Through Hole
Lead Free
Lead Free
Packaging
Tube
Factory Lead Time
14 Weeks
Categories
Integrated Circuits (ICs)
Terminal Position
DUAL
Tolerance
1%
Lifecycle Status
ACTIVE (Last Updated: 7 months ago)
Subcategory
Switching Regulator or Controllers
Manufacturer
STMicroelectronics
Package / Case
8-DIP (0.300, 7.62mm)
Mount
Through Hole
Technology
BIPOLAR
Number Of Outputs
1
Number Of Pins
8
Number Of Terminations
8
Terminal Pitch
2.54mm
Power Dissipation
1.25W
Output Current
200mA
Width
6.6mm
Weight
930.006106mg
Length
10.92mm
Reference Voltage
5V
Max Power Dissipation
1.25W
Output Voltage
5.1V
Max Supply Current
17mA
Quiescent Current
12mA
Synchronous Rectifier
No
Output Type
Transistor Driver
Sub-Categories
PMIC - Voltage Regulators - DC DC Switching Controllers
Duty Cycle (Max)
96%
Data Rate (Max)
PULSE WIDTH MODULATION
Serial Interfaces
SINGLE
Contents
50 ns
Base Part Number
UC3842
Height
3.32mm
Frequency
250kHz
Display & Interface Controllers
Step-Up, Step-Up/Step-Down
ESD Protection
Boost, Flyback
Manufacturer'S Part No.
UC3842BN
Operating Temperature
0°C~70°C TJ
Common questions
Product FAQ
Quick answers for buyers reviewing UC3842BN, stock, documentation, and sourcing steps.
What is UC3842BN?
UC3842BN is a PMIC - Voltage Regulators - DC DC Switching Controllers component from STMicroelectronics. This product page summarizes the core sourcing details buyers need before checking price, availability, documentation, or samples.
What package and description are listed for UC3842BN?
UC3842BN is listed with package reference DIP. The current product description is IC REG CTRLR PWM CM 8-MINIDIP, and buyers should confirm package, footprint, and electrical details against the datasheet or quotation notes before approval.
Is UC3842BN available in stock?
This page currently shows 92537 units in stock and 20282 units available for UC3842BN. Because electronic component availability can change quickly, submit an RFQ to confirm live stock, lead time, and final pricing.
Can I request a quote or sample for UC3842BN?
Yes. Use the Quick Quote or Request Sample action on this page to send the quantity and sourcing requirements for UC3842BN by STMicroelectronics. The TrustCompo team can review price, availability, and documentation support.
Is a datasheet available for UC3842BN?
Yes. This page links to the datasheet for UC3842BN by STMicroelectronics, so engineers and buyers can review package, ratings, and application details before purchase.
How should buyers verify UC3842BN before ordering?
Buyers should confirm the manufacturer, package, quantity, target price, RoHS or compliance needs, and any Certificate of Conformance or traceability requirements for UC3842BN before approving the order.
PMIC - Voltage Regulators - DC DC Switching Controllers
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