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STMicroelectronics 8-Pin PDIP PWM Controller, 500 kHz Switching Frequency, 36V Supply Voltage UC3842BN
Specifications
| Country of Origin | India |
|---|---|
| Brand | STMicroelectronics |
| Height | 3.32mm |
| Length | 10.92mm |
| Model | UC3842BN |
| Width | 6.6mm |
| Mount Type | Through Hole |
| Maximum Duty Cycle | 100% |
| Series | UC3842B |
| Output Current | 1A |
| Maximum Operating Temperature | 150°C |
| Package Type | PDIP |
| Minimum Operating Temperature | -40°C |
| Number of outputs | 1 |
| Output Voltage | 13.5V |
| Maximum Switching Frequency | 500kHz |
| Standards/Approvals | RoHS |
| Pin Count | 8 |
| Maximum Supply Voltage | 36V |
| Minimum Supply Voltage | 7V |
| Supply Current | 17mA |
| Start-up Supply Current | 500μA |
| PWM Controller Type | Current Mode |
Key Features
- Features 8-pin PDIP package with through-hole mount type.
- Supports current mode PWM control suitable for fly-back, forward, and quasi-resonant topologies.
- Operates at a maximum duty cycle of 100% ensuring flexible power delivery.
- Wide operating temperature range from -40°C to 150°C for harsh environments.
- Low start-up supply current of 500μA enhancing energy efficiency during startup.
- Output current capability of 1A with a supply current of 17mA.
- Integrated protections for enhanced robustness and reliability in SMPS applications.
- Compliance with RoHS environmental standards.
Product Description
STMicroelectronics UC3842BN is an 8-Pin PDIP pack PWM (Pulse Width Modulation) Controller designed for isolated and non-isolated AC-DC and DC-DC switch mode power supplies. It supports a maximum switching frequency of 500 kHz and operates on input voltages from 7V up to 36V. The controller uses current mode PWM and offers a maximum duty cycle of 100%, making it ideal for a variety of power supply topologies including fly-back, forward, and quasi-resonant.
It is housed in a through-hole 8-pin PDIP package measuring 10.92mm in length, 6.6mm in width, and 3.32mm in height. The device operates efficiently with a low start-up supply current of 500μA and a supply current of 17mA at output currents up to 1A. Its extended operating temperature range of -40°C to 150°C allows for use in demanding industrial environments.
The UC3842BN integrates a comprehensive set of protections for enhanced robustness and reliability. It is compliant with RoHS standards, ensuring minimal environmental impact. This PWM controller is widely used in power management IC applications such as switch mode power supplies (SMPS) in industrial, commercial, and laboratory power systems.
Features 8-pin PDIP package with through-hole mounting suitable for prototype and production PCBs. Current mode PWM provides accurate and stable regulation. High switching frequency enables compact transformer design and efficient power conversion.
Wide input voltage range supports varied power supply designs. Low startup current improves power efficiency. Extended temperature rating for robust operation in industrial applications. RoHS compliant to meet environmental and safety regulations.
Ideal for use in isolated and non-isolated AC-DC/DC-DC converters.
This PWM Controller is a core component for engineers designing reliable and efficient power supplies for a range of industrial machines, instrumentation, and automation systems. Explore the full range of STMicroelectronics power management ICs in EnvMart’s electronics category for comprehensive solutions.
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Frequently Asked Questions
The UC3842BN has a maximum switching frequency of 500 kHz, making it suitable for various power supply applications.
This model operates within a temperature range of -40°C to 150°C, allowing it to function in harsh environments.
It can deliver an output current of up to 1A, which is suitable for many power supply designs.
The controller supports a supply voltage range from 7V to 36V, accommodating various power supply requirements.
It is housed in an 8-pin PDIP package, designed for through-hole mounting on PCBs.
The start-up supply current for the UC3842BN is 500μA, which enhances energy efficiency during startup.
It operates with a maximum duty cycle of 100%, allowing for flexible power delivery across various applications.
This model uses current mode PWM control, which is suitable for fly-back, forward, and quasi-resonant topologies.
The supply current for this PWM controller is 17mA, which is relatively low for its output capability.
The dimensions of this PWM controller are 10.92mm in length, 6.6mm in width, and 3.32mm in height.
Yes, it is compliant with RoHS standards, ensuring minimal environmental impact during its lifecycle.
This PWM controller is widely used in switch mode power supplies (SMPS) for industrial, commercial, and laboratory power systems.
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