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Description
STMICROELECTRONICS UC3842BN Current Mode PWM Controller, 12V-25V supply, 250kHz, 13.5V/200mA out, DIP-8The UC3842BN is a high performance current mode PWM Controller IC provides the necessary features to implement off line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include a trimmed oscillator for precise DUTY CYCLE CONTROL under voltage lockout featuring start up current less than 0. 5mA, a precision reference trimmed for accuracy at the error amp input, logic to insure
The UC3842BN is a high performance current mode PWM Controller IC provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include a trimmed oscillator for precise DUTY CYCLE CONTROL under voltage lockout featuring start-up current less than 0.5mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control and a totem pole output stage designed to source or sink high peak current.
- Trimmed oscillator for precise frequency control
- Oscillator frequency guaranteed at 250kHz
- Current mode operation to 500kHz
- Automatic feed forward compensation
- Latching PWM for cycle-by-cycle current limiting
- Internally trimmed reference with under-voltage lockout
- High current totem pole output
- Under voltage lockout with hysteresis
- Low start-up and operating current
Applications
Power Management
Product details
| Controller IC Case Style | DIP |
| Operating Temperature Min | -25°C |
| Output Current | 200mA |
| Operating Temperature Max | 85°C |
| No. of Pins | 8Pins |
| Frequency | 250kHz |
| Output Voltage | 5.1V |
| Input Voltage | 15V |
| Product Range | - |
| Automotive Qualification Standard | - |
| Supply Voltage Min | 12V |
| Packaging | Each |
| Supply Voltage Max | 25V |
| MSL | - |
Other details
| Brand | STMICROELECTRONICS |
| Part Number | UC3842BN |
| Quantity | Each |
| Technical Data Sheet EN | |
| Product Change Notice EN |
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them. Image is for illustrative purposes only. Please refer to product description.
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- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.6 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 3
Not as tall as anticipated
Color: Black, Size: Wheel-6 Panel
Definitely not 6 feet tall, more like 5 1/2. Very sturdy and the fabric is thick. Works well for what we're using it for.
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Reviewed in the United States on November 30, 2025
★★★★★ 5
Easy to put together
Color: Grey, Size: Wheel-6 Panel
Love them
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Reviewed in the United States on December 17, 2025
★★★★★ 5
Good for my set up
Color: Black, Size: 15FT (Rotating Plug)
I have been using this to redo my office setup so that I have less cords going everywhere and this was the longest one that I could find with a bunch of grounded ports. I mounted it in a cable organizer under my desk and so far is going great. The cord length is perfect for what I needed because unfortunately where my desk is positioned in my office the nearest outlet is a ways away behind another piece of furniture. It was super easy to install because there's really no installation You just plug it in and you can rotate the cord in the socket so that it helps keep the direction easy for access to wherever you need to have it run to. It seems like it's durable I've had it probably 3 weeks now and the power has been turned off numerous times because of the enhanced safety features and so far none of my stuff has been damaged so I am thankful for that. I think it works well and I haven't had to use any of the USB ports or the c ports but I like that they are there so that as I add more stuff to my setup I have a place that I can easily plug them in.
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Reviewed in the United States on August 31, 2025
★★★★★ 5
Very nice power strip
Color: Black, Size: 5FT (Flat Plug)
It’s very nice that it has outlets facing different directions on the one side than the other. This allowed me to plug in a variety of different items including a smart plug.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Just what I was looking for
Color: White, Size: 10FT (Rotating Plug), Color: White, Size: 10FT (Rotating Plug)
Great solution for hiding all the cords coming from our tv above the fireplace in our apartment. Visible/untidy cords drive me insane and this worked perfectly to tidy everything up. It was much easier to run a single cord from the outlet to the tv along the fireplace and then hide everything behind the tv than it would have been to hide multiple cords with that plastic cord hiding stuff to the outlet/surge protector. This was super easy to install and makes everything so much nicer to look at while still having the surge protection for our devices. I also love that the cord rotates so it’s easily used no matter how your outlets or room is oriented.
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Reviewed in the United States on January 24, 2026
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