What is the Additional Feature ?

Name: UC3842BN
Brand: STMicroelectronics
SKU: UC3842BN
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

Cart ( )

lmages are for reference only See Product Specifications

STMicroelectronics UC3842BN

Part No.:: UC3842BN

Manufacturer:: STMicroelectronics

Package:: 8-DIP (0.300, 7.62mm)

Datasheet:: UC3842BN.pdf

Description:: IC REG CTRLR PWM CM 8-MINIDIP

In Stock:: 1063

Quantity:: Add To Cart

For more detailed including pricing and shipping

: Quick response, quick quotation

: Flash shipment, no worries after sales

: Original channel, guarantee of the authentic products

Please send RFQ , we will respond immediately.

Purchase and inquiry

UC3842BN this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including UC3842BN price, data-sheet, in-stock availability, technical difficulties. Also. Quickly Enter the access of compare listing to find out replaceable electronic parts. If you want to retrieve comprehensive data for UC3842BN to optimize the supply chain (including cross references, life-cycle, parametric, counterfeit risk, obsolescence managements forecasts), please contact to our Tech-supports team.

Purchase in icwhale.com

There is no doubt that you may place an order without registering to icwhale.com.

We strongly suggest you sign in our shop before purchasing as you can track your order real-time tracking.

Means of Payment in icwhale.com

For your convenience, we support multiple payment methods in USD, including PayPal, Credit Card, wire transfer. and Alipay.

RFQ (Request for Quotations) in icwhale.com

It is recommended to acquire for quotations to get the latest prices and inventories about the parts.

Our sales will reply to your request by email within 24 hours.

Warm reminder

1. You'll receive an order information email in your email inbox. (Please remember to check the spam folder if you didn't hear from us).

2. Since inventories and prices may fluctuate to some extent, the sales manager is going to reconfirm the order and let you know if there are any updates.

Shipping & Handling

Shipping fee starts at $35, but some countries will exceed $35. For example (South Africa, Brazil, India, Pakistan, Israel, etc.)

The basic freight (for package ≤0.5kg or corresponding volume) depends on the time zone and countries.

Shipping Method

Currently, our products are shipped through DHL, FedEx, SF, UPS and China Post.

Order Tracking for International Orders

Once your order has been shipped, the tracking number will be sent to the email address registered to your account. This information can also be viewed when logged into your account in the "my account" page.

Views：

UC3842BN Typical application Circuitry

UC3842BN

For power control applications like as switched-mode power supply (SMPS), the UC3842BN is a current-mode PWM controller. In flyback, boost, and forward converter setups, it is frequently utilized.

Features:

- Control of Current and Mode: UC3842BN uses current-mode control to simplify loop correction and enhance transient response.

- Pulse-by-Pulse Current Limiting: Provides protection against overcurrent conditions.

- Soft-Start: Helps in reducing startup stress on components.

- Error Amplifier: Allows for feedback loop compensation to regulate output voltage.

Applications:

- SMPS: Used in various types of power supplies for consumer electronics, industrial applications, and telecommunications equipment.

- LED Drivers: These devices allow LEDs in lighting applications to have their brightness adjusted.

- Battery Chargers: Found in lithium-ion, lead-acid, and other battery types' switch-mode chargers.

Circuit Design:

One common application is a flyback converter. Here's a detailed circuit design:

1. Feedback Loop: Connect pin 2 (COMP) to the feedback voltage divider to regulate the output voltage.

2. Output Switching Transistor: Connect pin 6 (OUT) to the base of an NPN transistor for switching the transformer primary.

3. Current Sense Resistor: Connect pin 1 (CS) to a current sense resistor to monitor the primary current for current-mode control.

4. Soft-Start Capacitor: Connect pin 3 (SS) to an external capacitor for soft-start functionality.

5. Voltage Reference: Connect pin 7 (VREF) to the UC3842BN voltage reference for internal regulation.

Design Considerations:

- Frequency Selection: Choose the oscillator frequency based on the application requirements and desired efficiency.

- Transformer Design: Design the transformer for the UC3842BN specific application, considering the input and output voltage requirements.

- Feedback Loop Compensation: Ensure stable operation by properly compensating the feedback loop for the desired bandwidth and phase margin.

- Output Diode Selection: Select a suitable diode for the output rectification based on the current and voltage requirements.

- EMI Filtering: Implement proper EMI filtering to minimize electromagnetic interference.

By addressing these considerations, you can design an efficient power supply using the UC3842BN controller.

UC3842BN information

UC3842BN Specifications

Package/Case:
8-DIP (0.300, 7.62mm)
Packaging:
Tube
Series:
-
ProductStatus:
Active
OutputType:
Transistor Driver
Function:
Step-Up, Step-Up/Step-Down
OutputConfiguration:
Positive, Isolation Capable
Topology:
Boost, Flyback
NumberofOutputs:
1
OutputPhases:
1
Voltage-Supply(Vcc/Vdd):
10V ~ 30V
Frequency-Switching:
Up to 500kHz
DutyCycle(Max):
96%
SynchronousRectifier:
No
ClockSync:
No
SerialInterfaces:
-
ControlFeatures:
Frequency Control
OperatingTemperature:
0°C ~ 70°C (TJ)
MountingType:
Through Hole

UC3842BN FAQ

1. How to order UC3842BN on icwhale.com?

Currently, icwhale.com only provide peer-to-peer order processing. While you submit the RFQ, our professional agent will contact you with the competitive prices in the global market, and our agent will prompt you to finish the order if you accept our offers.

2. How does icwhale.com guarantee that UC3842BN is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the UC3842BN. All suppliers must pass our qualification reviews before they can publish their products including UC3842BN on icwhale.com; we pay more attention to the channels and quality of UC3842BN products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.

3. Are the UC3842BN price and inventory displayed accurate?

The price and inventory of UC3842BN fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.

4. What forms of payment are accepted?

Wire Transfer, PayPal, Alipay, Wechat, Credit Card, Western Union, MoneyGram, and Escrow are all acceptable.

Warm Tips: Some orders in certain payment forms may require handling fee.

5. How is the shipping arranged?

Customers can choose industry-leading freight companies, including DHL, UPS, FedEx, TNT, and Registered Mail. Shipping insurance is also available.

Once your order has been processed for shipment, our salesperson will send you an email advising you of the shipping status and tracking number.

Warm Tips: It may take up to 24 hours for the carriers to display tracking information. Usually, express delivery takes 3-5 days, and registered mail takes 25-60 days.

6. What is the process for return or replacement of UC3842BN?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the UC3842BN we delivered, we will accept the replacement or return of the UC3842BN only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of UC3842BN.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations