HV9921N8-G LED Driver ICs by Microchip Technology

3-PIN Switch Mode LED Lamp Driver IC


The HV9921 is a pulse width modulated (PWM) high-efficiency LED driver control IC. It allows efficient operation of LED strings from voltage sources ranging up to 400VDC. The HV9921 includes an internal high voltage switching MOSFET controlled with fixed off-time (TOFF) of approximately 10.5μs. The LED string is driven at constant current, thus providing constant light output and enhanced reliability. The output current is internally fixed at 20mA for HV9921. The peak current control scheme provides good regulation of the output current throughout the universal AC line voltage range of 85 to 265VAC or DC input voltage of 20 to 400V.

Where to Buy

Prices starting from US$0.51

Distributor Stock
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Farnell
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Microchip Technology
from US$0.64
35,815
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Newark Electronics
from US$0.72
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Future Electronics
from US$0.74
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Avnet America
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RS Americas
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element14
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Features

Constant output current: 20mA
Universal 85 - 265VAC operation
Fixed off-time buck converter
Internal 475V power MOSFET

Specifications

Topology Buck
+Vin min (V) 20
+Vin max (V) 400
Output Current 20mA
Dimming No
Package TO-92, SOT-89
Product Type Off Line
Type Switch-Mode
Operating Iq (µA) 0.2
Vfb (V) 0
Oja (C/W) 132, 133
Extra LDOs 0
Vdropout (mV) 0
IQ LDO 0
Pins | Packaging 3 | SOT-89
Temp Range -40C to +85C
Packing Media Tape and reel (2000)

Environmental Information

JEDEC Indicator e3
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.0518
Shipping Weight (kg) 0.132
Lead Count 3
Package Type SOT-89
Soldering Composition Matte Tin

Alternative Descriptions

SWITCH MODE LED LAMP DRIVER IC | Microchip Technology
Led Driver, Buck, 400V, To-243Aa-3 | Newark Electronics
HV9921 Series 400 V 20 mA Buck Switch-Mode LED Lamp Driver Ics - SOT-89-3 | Future Electronics
LED DRVR Buck 1-CH Triac 0.02A 3-Pin SOT-89 | Avnet America
Microchip HV9921N8-G LED Driver IC, 20 - 400 V ac 20mA 4-Pin SOT-89 | Microchip Technology Inc. HV9921N8-G | RS Americas


Frequently Asked Questions

Where can I find additional details, specifications and documents for a HV9921N8-G?

Additional datasheets, footprints and schematics for HV9921N8-G are listed on our Part Details page. You can also find images and similar parts to HV9921N8-G on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for HV9921N8-G on our Product Comparison page. Access via the 'View Pricing & Stock' button to view HV9921N8-G price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does HV9921N8-G fall under?

The HV9921N8-G is listed under LED Lighting Components > LED Driver ICs > AC / DC LED Driver ICs.

Can I view similar or alternative parts?

You can view similar parts to HV9921N8-G when available in the AC / DC LED Driver 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 HV9921N8-G you can contact the distributor directly for product support, shipping queries etc.

Is the HV9921N8-G RoHS compliant?

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

Which authorised distributors for HV9921N8-G have stock available?

Authorised distributors including Microchip Technology, Newark Electronics, Future Electronics, Avnet America and RS Americas have stock available or on a lead time for HV9921N8-G.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for HV9921N8-G often in real-time on the comparison pages.

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