TI UC3845D
Flexible solution for power management





Brands: Texas Instruments
Mfr.Part #: UC3845D
Datasheet: UC3845D Datasheet (PDF)
Package/Case: SOIC (D)-14
RoHS Status:
Stock Condition: 5,179 pcs, New Original
Product Type: Power Supply Controllers, Monitors
Warranty: 1 Year Ovaga Warranty - Find Out More
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*All prices are in USD
Qty | Unit Price | Ext Price |
---|---|---|
1 | $1.363 | $1.363 |
10 | $1.210 | $12.100 |
30 | $1.101 | $33.030 |
100 | $1.001 | $100.100 |
500 | $0.955 | $477.500 |
1000 | $0.937 | $937.000 |
In Stock 5,179 PCS
UC3845D General Description
The UC3845D comes from the UCx84x family, offering various package options, temperature ranges, maximum duty cycles, turnon/turnoff thresholds, and hysteresis ranges. Devices with wider hysteresis ranges are ideal for off-line power supplies, while those with narrower ranges are better suited for DC-DC applications. The UC184x series operates from -55°C to 125°C, the UC284x series from -40°C to 85°C, and the UC384x series from 0°C to 70°C. This range of options allows for flexibility in designing power supply systems tailored to specific needs and operating conditions. With its advanced features and customizable specifications, the UC3845D is a reliable choice for a wide range of power control applications
Features
- Flexible frequency range for wide applications
- Synchronizable clock for precise timing
- Precision reference for reliable operation
Application
- Battery charger design
- LED driver applications
- Automotive electronics
Specifications
Parameter | Value | Parameter | Value |
---|---|---|---|
Regulator Topology | Boost, Buck, Buck boost, Flyback, Forward | Control mode | Peak current mode |
Duty cycle (max) (%) | 50 | Switching frequency (max) (kHz) | 500 |
Features | Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Multi-topology | UVLO thresholds on/off (V) | 8.4/7.6 |
Operating temperature range (°C) | 0 to 70 | Rating | Catalog |
Gate drive (typ) (A) | 1 |
Shipping
Shipping Type | Ship Fee | Lead Time | |
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DHL | $20.00-$40.00 (0.50 KG) | 2-5 days |
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Fedex | $20.00-$40.00 (0.50 KG) | 2-5 days |
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UPS | $20.00-$40.00 (0.50 KG) | 2-5 days |
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TNT | $20.00-$40.00 (0.50 KG) | 2-5 days |
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EMS | $20.00-$40.00 (0.50 KG) | 2-5 days |
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REGISTERED AIR MAIL | $20.00-$40.00 (0.50 KG) | 2-5 days |
Processing Time:Shipping fee depend on different zone and country.
Payment
Terms of payment | Hand Fee | |
---|---|---|
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Wire Transfer | charge US$30.00 banking fee. |
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Paypal | charge 4.5% service fee. |
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Credit Card | charge 3.5% service fee. |
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Western Union | charge US.00 banking fee. |
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Money Gram | charge US$0.00 banking fee. |
Guarantees
1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.
2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.
Packing
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Step1 :Product Inventory
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Step2 :Pressure Relief Packaging
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Step3 :Anti Static Packaging
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Step4 :Protective Packaging
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Step5 :Sealed Packaging
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Step6 :Preparation for shipment
We will inspect and count all goods before shipping to ensure that all products are intact and in accurate quantity, and will fully package them to ensure that they will not be damaged during transportation.
Q: How can I order the UC3845D?
A: To place an order for the UC3845D, select the "Add to Cart" button associated with the product listing on our website. Once selected, you can finalize your purchase by proceeding to the checkout page, where you can enter your payment and shipping information.
Q: What is the warranty period for the UC3845D?
A: We offer a 1-year warranty on the UC3845D. This warranty covers any defects in materials and artistry under normal use. During the warranty period, if the product is found to be defective, it will be repaired or replaced at no charge. For further details, please refer to our warranty policy.
Q: How does Ovaga ensure the authenticity of UC3845D from Texas Instruments?
A: Ovaga has a dedicated business development team that rigorously tests and verifies the credentials of original Texas Instruments manufacturers and authorized agents. All Texas Instruments suppliers must pass a qualification review before they can list their UC3845D products on our platform. We emphasize sourcing from reliable channels and maintaining high product quality standards, ensuring you can make your purchase with confidence.
Q: How can I find detailed information about the UC3845D chips, such as application notes, factory information, and images?
A: You can utilize Ovaga's intelligent search engine, filter by the Ethernet PHY Products category, or visit the Texas Instruments information page to find comprehensive details about the UC3845D.
Q: Are the price and stock information for UC3845D on Ovaga's platform accurate?
A: Inventory levels for Texas Instruments products can fluctuate and may not be updated in real time. The information is refreshed periodically within 24 hours. To confirm stock availability and final pricing, you must confirm your order with an Ovaga salesperson or customer service representative before proceeding with payment.
Q: Can I place orders offline with Ovaga?
A: Yes, offline orders are accepted. You can navigate to the "My Orders" section and enter transaction management to place your order. Reviewing the "Order Details" and proceeding to place the order is straightforward. Additionally, you may benefit from coupons or selected gifts when ordering online.
Q: What payment methods are accepted by Ovaga?
A: Ovaga accepts various payment methods, including Wire Transfer, PayPal, Credit Cards, Western Union, and Money Gram.
Q: How is shipping arranged, and how can I track my package?
A: Customers can choose from industry-leading freight companies such as DHL, FedEx, UPS, TNT, EMS, and Registered Air Mail. Once your order is processed for shipment, you will receive an email with the shipping status and tracking number. Note that tracking information may take up to 24 hours to be displayed by carriers. Typically, express delivery takes 2-5 days.
Q: What is the return or replacement process for UC3845D?
A: Ovaga conducts Pre-Shipment Inspections (PSI) on all orders to ensure quality before shipment. Suppose there are issues such as quantity discrepancies, incorrect items, or visible defects (e.g., breakage or rust), and they are acknowledged by us. In that case, returns or replacements will be accepted under the following conditions:
- ●The defect must be reported within 365 days after delivery.
- ●The product must be unused and in its original, unopened packaging.
- ●Requesting Return Authorizations must be obtained.
For the return process:
- ●Please inform us within 365 days of receiving the product.
- ●Obtain Return Authorization from our team.
- ●Please refer to our After-Sale Matters for more detailed instructions.
Q: How can I contact Ovaga for support, including obtaining datasheets or pin diagrams for the UC3845D?
A: For any after-sales support or technical inquiries, including requests for datasheets or pin diagrams, please get in touch with us via email at [email protected].
Q: What can you tell me about Ovaga's quality assurance practices?
A: Ovaga is committed to maintaining the highest standards of quality. We are certified under ISO14001, ISO 9001, IATF16949, ISO13485, and DUNS standards by the Quality Systems Registrar. This certification signifies that our operational systems meet stringent international standards in quality management. Our compliance is regularly reviewed and tested to ensure ongoing adherence to these standards, affirming our commitment to quality and continuous improvement.
Q: What do the ISO, IATF, and DUNS certifications mean for customers of Ovaga?
A: Our ISO, IATF, and DUNS certifications assure customers that Ovaga operates systems that are both accurate and comprehensive, meeting the rigorous requirements of the ISO, IATF, and DUNS standards. This certification underscores our long-term commitment to continuous improvement across our operations. As a note to our customers, while we strive for accuracy in product data on our website, we recommend referring to the manufacturer's datasheet or catalog for confirmed product specifications before placing an order. If you identify any discrepancies, please get in touch with us immediately.
Part points
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The UC3845D is a high-performance current-mode PWM controller used in power supply and lighting applications. It provides precise control of switching frequency, duty cycle, and output voltage regulation. Its versatile design allows for easy customization and integration into various power conversion circuits.
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Equivalent
The equivalent products of UC3845D chip are SG3845D, TL3845D, and LM3845D. These chips are all pulse width modulation controllers, commonly used in switch-mode power supplies for voltage regulation and current control. They have similar features and functions as the UC3845D, making them suitable replacements in various electronic applications. -
Features
1. Current mode PWM controller 2. Adjustable frequency up to 500kHz 3. Pulse-by-pulse current limiting 4. On-chip soft-start 5. Undervoltage lockout with hysteresis 6. External programmable OVP 7. Precision reference trimmed for accuracy -
Pinout
The UC3845D is an 8-pin voltage mode PWM controller used in power supply and motor control applications. Pin 1 (VIN) is the input voltage, Pin 4 (GND) is the ground, Pin 8 (VCC) is the supply voltage, and Pin 5 (VREF) is the reference voltage. Pins 2, 3, 6, and 7 are used for control and feedback signals. -
Manufacturer
The UC3845D is a product manufactured by Texas Instruments, a US-based semiconductor company that specializes in designing and manufacturing integrated circuits and other electronic components. Texas Instruments is a leading player in the semiconductor industry, known for its high-quality products and innovative solutions for various applications in electronics and technology. -
Application Field
The UC3845D is commonly used in power supply applications such as uninterruptible power supplies (UPS), power factor correction (PFC) circuits, and DC-DC converters. It is also used in battery chargers, motor control circuits, and various other high voltage switching applications. -
Package
The UC3845D chip is a surface mount package type in a SOIC form factor with 16 pins. The overall size of the package is 9.90mm x 3.91mm x 1.55mm. Its dimensions are standardized to fit a wide range of applications and PCB layouts.
Assembly Advice
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