Highly Integrated Green-Mode PWM Controller
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SG6742HRSY Product Details
The highly integrated SG6742HL/HR PWM controller provides several features to enhance the performance of flyback converters. To minimize standby power consumption, a proprietary green-mode function provides off-time modulation to linearly decrease the switching frequency at light-load conditions. To avoid acoustic-noise problems, the minimum PWM frequency is set above 22KHz. This green-mode function enables the power supply to meet international power conservation requirements. With the internal high-voltage startup circuitry, the power loss due to bleeding resistors is eliminated. To further reduce power consumption, SG6742HL/HR is manufactured using the BiCMOS process, which allows an operating current of 2.7mA. SG6742HL/HR integrates a frequency-hopping function internally that helps reduce EMI emission of a power supply with minimum line filters. Its built-in synchronized slope compensation achieves stable peak-current-mode control. The proprietary, internal line compensation ensures constant output power limit over a wide AC input voltage range, from 90VAC to 264VAC. SG6742HL/HR provides many protection functions. In addition to cycle-by-cycle current limiting, the internal open-loop protection circuit ensures safety should an open-loop or output short-circuit failure occur. PWM output is disabled until VDD drops below the UVLO lower limit, when the controller starts up again. As long as VDD exceeds ~25V, the internal OVP circuit is triggered. SG6742HL/HR is available in an 8-pin SOP package.
Low Operating Current: 2.7mA
Linearly Decreasing PWM Frequency to 22KHz
Frequency Hopping to Reduce EMI Emission
Fixed PWM Frequency: 100KHz
Cycle-by-Cycle Current Limiting
Leading-Edge Blanking (LEB)
Synchronized Slope Compensation
Internal Open-Loop Protection
GATE Output Maximum Voltage Clamp: 18V
VDD Under-Voltage Lockout (UVLO)
VDD Over-Voltage Protection (OVP)
Programmable Over-Temperature Protection (OTP)
Internal Latch Circuit (OVP, OTP)
Internal-Sense, Short-Circuit Protection
Built-in 6ms Soft-Start Function
Constant Power Limit (Full AC Input Range)
Internal OTP Sensor with Hysteresis
- Switching Frequency
- 110 kHz
- Rise Time
- 250 ns
- Fall Time
- 50 ns
- Operating Supply Voltage
- 30 V
- Operating Supply Current
- 2.7 mA
- Number of Outputs
- Maximum Operating Temperature
- + 105 C
- Mounting Style
- Package / Case
- SOIC-8 Narrow
- Minimum Operating Temperature
- - 40 C
- Output Voltage
- 18 V
- Factory Pack Quantity
- Flyback Converter
SG6742HRSY Related Products
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objets bien reçu, merci
Estimated Delivery Time: Dec 12 - Dec 17 days (choose Expedited at checkout).
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After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.
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.
- Q: How does Jotrin guarantee that SG6742HRSY is the original manufacturer or agent of FAIRCHILD?
- We have a professional business development department to strictly test and verify the qualifications of FAIRCHILD original manufacturers and agents. All FAIRCHILD suppliers must pass the qualification review before they can publish their SG6742HRSY devices; we pay more attention to the channels and quality of SG6742HRSY products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
- Q: How to find the detailed information of SG6742HRSY chips? Including FAIRCHILD original factory information, Current Mode PWM Controllers application, SG6742HRSY pictures?
- You can use Jotrin's intelligent search engine, or filter by Current Mode PWM Controllers category, or find it through Fairchild Semiconductor (ON Semiconductor) Information page.
- Q: Are the FAIRCHILD's SG6742HRSY price and stock displayed on the platform accurate?
- The FAIRCHILD's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for SG6742HRSY, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
- Q: Can I place an order offline?
Yes. We accept offline orders.
We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online.
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- Q: How is the shipping arranged and track my package?
Customers can choose industry-leading freight companies, including DHL, FedEx, UPS, TNT, and Registered Mail.
Once your order has been processed for shipment, our sales will send you an e-mail advising you of the shipping status and tracking number.
Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
- Q: What is the process for returns or replacement of SG6742HRSY?
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 SG6742HRSY we delivered, we will accept the replacement or return of the SG6742HRSY 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 SG6742HRSY.
(3)The SG6742HRSY 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
More details about return electronic components please see our Return & Change Policy.
- Q: How to contact us and get support, such as SG6742HRSY datasheet pdf, SG6742HRSY pin diagram?
- Need any After-Sales service, please feel free contact us: firstname.lastname@example.org
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