SR087SG-G More Semiconductors - ICs by Microchip Technology

Adjustable Off-line Inductorless Switching Regulator


SR087 is an inductorless switching regulator designed to operate directly from a rectified AC line. The operating principle is to turn on a pass transistor when the rectified AC is below the output voltage, and to turn it off when the output voltage reaches a specific level. A linear regulator supplied by VOUT provides an additional fixed 5.0V output. Efficiencies of around 55% may be realized for loads up to 1.0W in 120VAC applications, with around 50% efficiencies for loads up to 800mW in 230VAC applications. A logic-level enable input allows the SR087 to be disabled – useful when it is employed as a keep-alive power supply. WARNING! Galvanic isolation is not provided. Dangerous voltages are present when connected to the AC line. It is the responsibility of the designer employing the SR087 to ensure adequate safeguards are in place to protect the end user from electrical shock. The circuits shown in this datasheet are not guaranteed to meet surge and conducted EMI requirements. The effectiveness of these circuits may vary with a particular application. The designer should conduct tests to ascertain compliance with applicable standards and regulations.

Where to Buy

Prices starting from US$0.77

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Features

Efficient operation without magnetics
No high voltage capacitors
Adjustable main output voltage (9.0 to 50V)
Additional 5.0V internal regulator
Up to 100mA combined output current
Single BOM for 120VAC/230VAC
Built-in soft start
Less than 200mW standby power

Specifications

Vin (VAC) 80 - 285
Adj Vout(V) 9.0 - 50
Fixed Vout(V) 5
Iout Max (mA) 100
Load Regulation (%/mA) 0.017
Package SOIC-8 w/HS
Pins | Packaging 8 | SOIC
Temp Range -40C to +125C
Packing Media Tape and reel (3300)

Environmental Information

JEDEC Indicator e3
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.078
Shipping Weight (kg) 0.206061
Lead Count 8
Package Type SOIC
Package Width or Size 3.90mm(.150in)
Soldering Composition Matte Tin

Alternative Descriptions

ADJUSTABLE OFF-LINE INDUCTORLESS SWITCHING REGULATOR | Microchip Technology
Ac/Dc Conv, 1W, Nsoic-8 | Newark Electronics
OFF-LINE INDUCTORLESS REG, ADJ, NSOIC-8 | element14
8 SOIC 3.90mm(.150in) T/RADJUSTABLE OFF-LINE INDUCTORLESS SWITCHING REGULATOR | Microchip Technology Inc. SR087SG-G | RS Americas
Inductorless Switching Regulator 8-Pin SOIC T/R | Avnet America


Frequently Asked Questions

Where can I find additional details, specifications and documents for a SR087SG-G?

Additional datasheets, footprints and schematics for SR087SG-G are listed on our Part Details page. You can also find images and similar parts to SR087SG-G on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for SR087SG-G on our Product Comparison page. Access via the 'View Pricing & Stock' button to view SR087SG-G price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does SR087SG-G fall under?

The SR087SG-G is listed under Semiconductors - ICs > More Semiconductors - ICs.

Can I view similar or alternative parts?

You can view similar parts to SR087SG-G when available in the More Semiconductors - ICs range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the SR087SG-G you can contact the distributor directly for product support, shipping queries etc.

Is the SR087SG-G RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Microchip Technology.

Which authorised distributors for SR087SG-G have stock available?

Authorised distributors including Microchip Technology, Newark Electronics, element14, Farnell and RS Americas have stock available or on a lead time for SR087SG-G.

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