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Smart Green-Mode PWM Controller
| Manufacturer : | LEADTREN |
|---|---|
| Package/Case : | SOP-8 |
| Product Categories : | Integrated Circuits (ICs) |
| Datasheet: | LD7523GS Datasheet (PDF) |
| RoHs Status: | Lead free/RoHS Compliant |
| In-stock: | 314 |
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LD7523GS Product Details
LD7523GS 6/16/2009 Smart Green-Mode PWM Controller with Multiple Protections REV: 00 General Description The LD7523GS is a low startup current, current mode PWM controller with green-mode power-saving operation. The SOP-8/DIP-8 package integrated functions such as the leading- edge blanking of the current sensing, internal slope compensation, line compensation, and several protection features. The protection functions include cycle-by-cycle current limit, OVP, OLP, and brownout protection. It provides the users a high efficiency, low external component counts solution for AC/DC power applications. Furthermore, to satisfy various protection requirements, both latch-mode protection and auto-recoverable protection can be easily achieved by configuring LD7523GS on different operation modes. The special green-mode control is not only to achieve the low power consumption operation but also the to offer a is non-audible-noise when LD7523GS Features z z z z z z z z z z z z z High-Voltage CMOS Process with Excellent ESD protection Very Low Startup Current (< 35μA) Current Mode Control Non-audible-noise Green Mode Control UVLO (Under Voltage Lockout) LEB (Leading-Edge Blanking) on CS Pin Internal Slope Compensation Programmable Line Compensation OVP (Over Voltage Protection) OLP (Over Load Protection) Brownout Protection Built in OLP De-Latch Timer 500mA Driving Capability Applications z z z Switching AC/DC Adaptor and Battery Charger Open Frame Switching Power Supply LCD Monitor/TV Power operating under light load or no load condition. Typical Application AC input EMI Filter VCC OVP OUT LD7523GS CS BNO GND COMP photocoupler TL431 1 Leadtrend Technology Corporation LD7523GS-DS-00 June 2009 w w w. leadtrend LD7523GS Pin Configuration SOP-8 & DIP-8(TOP VIEW) GND 5 OVP VCC 7 8 OUT 6 TOP MARK YYWWPP 1 2 3 4 YY : Year code (D: 2004, E: 2005…..) WW : Week code ## : Production code COMP BNO Ordering Information Part number LD7523GS GS LD7523GS GN SOP-8 DIP-8 Package Green Package Green Package TOP MARK LD7523GSGS LD7523GSGN Shipping 2500 /tape & reel 3600/tube /carton The LD7523GS is ROHS Complaint/ Green Package. Pin Descriptions PIN NAME FUNCTION Brownout Protection Pin. Connect a resistor divider between this pin and bulk 1 BNO capacitor voltage to set the brownout level and line compensation. When the voltage of this pin fall below threshold voltage, the PWM output will be shut off. 2 3 4 5 6 7 COMP NC CS GND OUT VCC Voltage feedback pin (same as the COMP pin in UC384X). Connect it with a photo-coupler to close the control loop and achieve the regulation. NC Current sense pin, connect to sense the MOSFET current Ground Gate drive output to drive the external MOSFET Supply voltage pin This pin is active-high to provide the OVP function. Connecting a zener or a 8 OVP resistor voltage divider to Vcc will set the OVP level. Once the voltage rise above 2.5V, the OVP will be tripped and the gate drive off. Shor
LD7523GS 6/16/2009 Smart Green-Mode PWM Controller with Multiple Protections REV: 00 General Description The LD7523GS is a low startup current, current mode PWM controller with green-mode power-saving operation. The SOP-8/DIP-8 package integrated functions such as the leading- edge blanking of the current sensing, internal slope compensation, line compensation, and several protection features. The protection functions include cycle-by-cycle current limit, OVP, OLP, and brownout protection. It provides the users a high efficiency, low external component counts solution for AC/DC power applications. Furthermore, to satisfy various protection requirements, both latch-mode protection and auto-recoverable protection can be easily achieved by configuring LD7523GS on different operation modes. The special green-mode control is not only to achieve the low power consumption operation but also the to offer a is non-audible-noise when LD7523GS Features z z z z z z z z z z z z z High-Voltage CMOS Process with Excellent ESD protection Very Low Startup Current (< 35μA) Current Mode Control Non-audible-noise Green Mode Control UVLO (Under Voltage Lockout) LEB (Leading-Edge Blanking) on CS Pin Internal Slope Compensation Programmable Line Compensation OVP (Over Voltage Protection) OLP (Over Load Protection) Brownout Protection Built in OLP De-Latch Timer 500mA Driving Capability Applications z z z Switching AC/DC Adaptor and Battery Charger Open Frame Switching Power Supply LCD Monitor/TV Power operating under light load or no load condition. Typical Application AC input EMI Filter VCC OVP OUT LD7523GS CS BNO GND COMP photocoupler TL431 1 Leadtrend Technology Corporation LD7523GS-DS-00 June 2009 w w w. leadtrend LD7523GS Pin Configuration SOP-8 & DIP-8(TOP VIEW) GND 5 OVP VCC 7 8 OUT 6 TOP MARK YYWWPP 1 2 3 4 YY : Year code (D: 2004, E: 2005…..) WW : Week code ## : Production code COMP BNO Ordering Information Part number LD7523GS GS LD7523GS GN SOP-8 DIP-8 Package Green Package Green Package TOP MARK LD7523GSGS LD7523GSGN Shipping 2500 /tape & reel 3600/tube /carton The LD7523GS is ROHS Complaint/ Green Package. Pin Descriptions PIN NAME FUNCTION Brownout Protection Pin. Connect a resistor divider between this pin and bulk 1 BNO capacitor voltage to set the brownout level and line compensation. When the voltage of this pin fall below threshold voltage, the PWM output will be shut off. 2 3 4 5 6 7 COMP NC CS GND OUT VCC Voltage feedback pin (same as the COMP pin in UC384X). Connect it with a photo-coupler to close the control loop and achieve the regulation. NC Current sense pin, connect to sense the MOSFET current Ground Gate drive output to drive the external MOSFET Supply voltage pin This pin is active-high to provide the OVP function. Connecting a zener or a 8 OVP resistor voltage divider to Vcc will set the OVP level. Once the voltage rise above 2.5V, the OVP will be tripped and the gate drive off. Shor
Technical Parameters
- Manufacturer
- LEADTREN
- Packing
- Tape & Reel (TR)/Cut Tape (CT)/Tray/Tube
- RoHs Status
- Lead free/RoHS Compliant
- Package/Case
- SOP-8
LD7523GS Equivalent Parts
For the LD7523GS component, you may consider these replacement and alternative parts.
| Models | Manufacturer | Package/Case | Description |
|---|---|---|---|
| LD7536R | |||
| LD7575PS | LEADTREND | SOP-8 | Green-Mode PWM Controller with High-Voltage Start-Up Circuit |
| LD7537R |
LD7523GS Related Products
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Shipping & Payment
Shipping
- Shipping Type
- Ship Fee
- Lead Time
- DHL
- $20.00-$40.00 (0.50 KG)
- 2-5 days
- Fedex
- $20.00-$40.00 (0.50 KG)
- 3-7 days
- UPS
- $20.00-$45.00 (0.50 KG)
- 2-5 days
- TNT
- $25.00-$65.00 (0.50 KG)
- 2-5 days
- EMS
- $25.00-$45.00 (0.50 KG)
- 5-14 days
- REGISTERED AIR MAIL
- $2.00-$3.00 (0.10 KG)
- 7-30 days
Processing Time：Shipping fee depend on different zone and country.
Payment
- Terms of payment
- Hand Fee
- Wire Transfer
- charge US$30.00 banking fee.
- Paypal
- charge 4.0% service fee.
- Credit Card
- charge 3.5% service fee.
- Western Union
- charge US$0.00 banking fee.
- Money Gram
- charge US$0.00 banking fee.
We provide high quality products, thoughtful service and after sale guarantee
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We have rich products, can meet your various needs.
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Minimum order quantity starts from 1pcs.
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Lowest international shipping fee starts from US$2.00.
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90 days quality guarantee for all products.
Packing
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Step1: Products
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Step2: Vacuum Packaging
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Step3: Anti-Static Bag
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Step4: Individual Packaging
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Step5: Packaging Boxes
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Step6: Bar-Code Shipping Tag
All the products will packing in anti-staticbag. Ship with ESD antistatic protection.
Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.
We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.
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.
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.
FAQ:
- Q: How does Jotrin guarantee that LD7523GS is the original manufacturer or agent of LEADTREN?
- We have a professional business development department to strictly test and verify the qualifications of LEADTREN original manufacturers and agents. All LEADTREN suppliers must pass the qualification review before they can publish their LD7523GS devices; we pay more attention to the channels and quality of LD7523GS products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
- Q: How to find the detailed information of LD7523GS chips? Including LEADTREN original factory information, application, LD7523GS pictures?
- You can use Jotrin's intelligent search engine, or filter by Integrated Circuits (ICs) category, or find it through LEADTREN brand manufacturer page.
- Q: Are the LEADTREN's LD7523GS price and stock displayed on the platform accurate?
- The LEADTREN's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for LD7523GS, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
- Q: Can I place an order offline?
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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. - Q: What forms of payment can I use in Jotrin?
- TT Bank, Paypal, Credit Card, Western Union, and Escrow is all acceptable.
- Q: How is the shipping arranged and track my package?
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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 LD7523GS?
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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 LD7523GS we delivered, we will accept the replacement or return of the LD7523GS 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 LD7523GS.
(3)The LD7523GS 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 LD7523GS datasheet pdf, LD7523GS pin diagram?
- Need any After-Sales service, please feel free contact us: sales@jotrin.com
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