Name: UC3845B
Brand: UMW Youtai Semiconductor
SKU: DS-9753659
Price: 1.04 USD
Availability: InStock
Rating: 4.8 (3 reviews)

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UMW Youtai Semiconductor UC3845B

7.6V~30V SOP-8 AC-DC Controllers & Regulators

Manufacturer # :UC3845B

Manufacturer :UMW Youtai Semiconductor

Dasenic # :UC3845B-DS

Datasheet :

UC3845B Datasheet

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Description : 7.6V~30V SOP-8 AC-DC Controllers & Regulators

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Quantity	Unit Price	Total
1+	$ 1.0400	$ 1.04
10+	$ 0.7880	$ 7.88
25+	$ 1.0400	$ 26
50+	$ 0.6556	$ 32.78
100+	$ 0.5584	$ 55.84

In Stock: 2210

MOQ :1 PCS

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Delivery Time :Ship Within 48 Hours

Shipping Origin :Shenzhen or Hong Kong Warehouse

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Unit Price :$ 1.04

Total :$ 1.04

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UC3845B information

UMW Youtai Semiconductor UC3845B technical specifications, attributes, parameters.
Category:Integrated Circuits (ICs)/PMIC - AC DC Converters, Offline Switchers
Product Status:Active
Operating Temperature:0°C ~ 70°C (TA)
Mounting Type:Surface Mount
Package / Case:8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:8-SOP
Internal Switch(s):Yes
Voltage - Supply ( Vcc/ Vdd):7.6V ~ 30V
Frequency - Switching:50kHz, 52kHz
Output Isolation:Non-Isolated
Topology:Boost, Flyback
Voltage - Start Up:8.4 V
Duty Cycle:48%
Fault Protection:Current Limiting, UVLO
Control Features:Frequency Control, Soft Start
Base Product Number:UC3845
Packaging:Dasenic-Reel®
Packaging:Cut Tape (CT)
Packaging:Tape & Reel (TR)
EU RoHS Status:ROHS3 Compliant
MSL Rating:1 (Unlimited, 30°C/85%RH)
US ECCN:EAR99
HTS US:8542.39.0001
REACH Status:REACH is not affected
China RoHS Status:Green Symbol: Green and environmentally friendly product

Download datasheets and manufacturer documentation for UMW Youtai Semiconductor UC3845B
Datasheet:
UC3845B,

UMW Youtai Semiconductor UC3845B Environmental and export classification status description
of UC3845B The UC3845B is a high-performance, fixed-frequency current-mode PWM (Pulse Width Modulation) controller, designed for use in off-line and DC-to-DC converter applications. It includes features that minimize the number of external components and optimize efficiency in power systems. Functions 1. Current Mode Control: Provides better line and load regulation. 2. Built-in Voltage Reference: Ensures stable output. 3. Adjustable PWM Frequency: Typically 50 kHz to 100 kHz. 4. Soft Start: Limits inrush current at startup. 5. Overcurrent Protection: Offers fault protection by limiting output current. Applications - Switching power supplies (SMPS). - Off-line power converter applications. - DC-DC converters in various electronic devices. - Battery chargers and adapters. - Industrial power systems. Alternative Parts Some alternative parts to the UC3845B include: - UC3842: A similar PWM controller with slightly different specifications. - TL494: Another PWM controller widely used in power supply designs. - LM2596: A step-down voltage regulator that can serve similar purposes. Embedded Modules 1. Evaluation Boards: Often provided to assess performance and help design circuits using the UC3845B. 2. Development Kits: Kits that may include the UC3845B for rapid prototyping and testing in power applications. Related Q&A 1. Q: What is the main advantage of using the UC3845B in power supply designs? - A: The UC3845B offers high efficiency through its current-mode control, ensuring better responsiveness to load changes and providing improved line and load regulation. 2. Q: Can the UC3845B be used for both AC and DC inputs? - A: Yes, the UC3845B is designed primarily for off-line applications, meaning it can handle AC inputs that are rectified to DC, making it suitable for a variety of power supply configurations. 3. Q: What protections does the UC3845B include? - A: It includes overcurrent protection through current-sensing capabilities, which helps prevent damage to the circuit during fault conditions by limiting the output current. 4. Q: How does the soft start feature of the UC3845B work? - A: The soft start feature gradually ramps up the output voltage during startup, which limits inrush current and prevents sudden load changes that could disrupt the power system. 5. Q: Are there development resources available for the UC3845B? - A: Yes, manufacturers usually offer evaluation boards, development kits, and datasheets that provide detailed information on design implementation and performance evaluation.

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UC3845B provided by UMW Youtai Semiconductor

Guangdong Youtai Semiconductor Co., Ltd., known as UMW®, is a high-tech enterprise affiliated with Youtai Semiconductor Co., Ltd. Established in 2013 in Hong Kong, it is headquartered in Shenzhen, with a production base in Chongqing. UMW® excels in integrated circuits and discrete device R&D, manufacturing, and sales. Our production base covers 12,000+ square meters, with 120+ production and technical staff, and annual shipments exceed 3 billion. We have advanced manufacturing lines, quality certifications, utility patents, and software copyrights. UMW® products include power management ICs, LDOs, MOS tubes, optocouplers, motor drives, ESD protection, and more, serving consumer and industrial markets. Applications for these products range from drones, robots, and electronics to automotive and industrial automation. We have branches in Shenzhen, Hong Kong, Hangzhou, and Guangzhou with over 300 employees.