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KA3844B
PDIP8, 1A, Current-mode, Switching Controller, 500kHz Switching Freq-Max
KA3844B
PDIP8, 1A, Current-mode, Switching Controller, 500kHz Switching Freq-Max
Quality Assurance
Quality Assurance
All parts procured from our supply chain network undergo a rigorous incoming inspection process. This meticulous inspection ensures that the parts received by our customers are authentic and meet the required standards. Additionally, we maintain detailed records of these inspections to ensure transparency and traceability throughout the supply chain.
Certification
We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.
Shipping & Payment
Shipping & Payment
About Shipping
We generally ship orders within a few business days through reliable shipping carriers such as FedEx, SF, UPS, or DHL. We also have support for other shipping methods. If you would like to inquire about specific shipping details or costs, please don't hesitate to reach out to us.
About Payment
We accept various payment methods, including VISA, MasterCard, UnionPay, Western Union, PayPal, and other channels.
If you have a specific payment method in mind or would like to inquire about rates and other details, please feel free to contact us.
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Service & Packaging
Service & Packaging
About After Sales Service
All Parts Extended Quality Guarantee
Initiate the application within 90 days from the shipment date.
Confirm the return or exchange with our staff.
Maintain the goods in their original condition as received.
Lastly, please note that the eligibility for return or exchange of goods is subject to an assessment of the actual condition of the returned items. We will evaluate the received goods before finalizing the return or exchange process. If you have any inquiries or require further assistance regarding returns or exchanges, please don't hesitate to contact us at [email protected]
About packaging
Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.
Example
Tape and Reel
Cut Tape
Tube or Tray
KA3844B DataSheet
Pricing (USD)
| Quantity | Unit Price | Ext. Price |
|---|---|---|
| 1 | $0.770 | $0.77 |
| 200 | $0.299 | $59.80 |
| 500 | $0.288 | $144.00 |
| 1000 | $0.283 | $283.00 |
These prices are subject to market fluctuations, and a quote submission is required to obtain the latest prices.
Details
Relevant industries will benefit from the technical advantages offered by the KA3844B, such as its high level of output current, wide input voltage range, and protective features. Its compatibility with various applications, combined with its ease of integration, positions it as a valuable component for enhancing the functionality and efficiency of DC-DC converters and switching regulators. The KA3844B represents a reliable and versatile solution for achieving precise voltage and current control in electronic circuits
Key Features
- High-Speed Operation up to 100kHz
- Safe Operating Area Diagram
- Regulated Voltage Output: 5V ±5%
- Soft-Start Function for In-Rush Current Limiting
- Over-Temperature Shut-Down with Hysteresis
- Precision Voltage Reference: 2.5V ±1%
Application
- Power Supplies
- Lighting Systems
- DC Converters
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Manufacturer | onsemi | Product Category ! | AC DC Converters, Offline Switchers |
| Series | - | Packaging ! | Tube |
| Unit-Weight | 8-DIP (0.300", 7.62mm) | Mounting-Style | 8-DIP |
| Package-Case | - | Operating-Temperature | 1 Output |
| Mounting-Type | - | Supplier-Device-Package | - |
| Watt | 16V | Number-of-Outputs | Up to 500kHz |
| Output-Isolation | - | Internal-Switch-s | Frequency Control |
| Voltage-Breakdown | 17 mA | Topology | 35 ns |
| Voltage-Start-Up | 45 ns |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is KA3844B?
The KA3844B is a pulse width modulation (PWM) control circuit designed for high-performance switching power supplies and other applications that require high frequency pulse width modulation.
How Does KA3844B Work?
The KA3844B operates by providing control for the turn-on and turn-off times of the power switch in a PWM circuit. It regulates the duty cycle of the output waveform, which is used to control the power delivered to the load. This allows for efficient power conversion and regulation.
How Many Pins does KA3844B have and What are the Functions of the Pinout Configuration?
The KA3844B is available in a 16-pin dual in-line package (DIP). The pinout configuration includes:
- VI: Voltage input pin.
- GND: Ground pin.
- COMP: Error amplifier output pin.
- Ramp: Ramp input pin for the on-time control.
- CT: Timing capacitor pin for frequency control.
- RT: Timing resistor pin for frequency control.
- OUT: Output pin.
- SD: Shutdown pin.
What are the Pros and Cons of KA3844B?
Pros:
- High-Performance: Suitable for high-frequency switching power supply applications.
- Efficient Power Conversion: Enables efficient regulation of power delivered to the load.
- Wide Voltage Range: Supports a wide input voltage range for versatility.
Cons:
- External Components: May require additional external components for certain applications.
- Complexity: Requires careful design considerations for noise, stability, and output regulation.
Are There Any Equivalents/Alternatives to KA3844B for Recommendation?
Equivalents to the KA3844B include the SG3524 from STMicroelectronics and the UC3844 from Texas Instruments. Alternatives with similar functions include the TL494 from Texas Instruments and the IRS2153D from Infineon Technologies.
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