L99LD21Q6TR LED Drivers by STMicroelectronics
High power LED driver for automotive applications
| Status: | Active |
|---|---|
| Series: | L99LD21 |
| RoHS: | Compliant |
Features
| AEC-Q100 qualified |
| General ST SPI communication v4.1 5.5 to 24V Operating battery voltage range Load dump protected QFN40L (wettable flanks) with exposed pad Timeout watchdog and limp home function Low standby current |
| ST SPI communication v4.1 |
| 5.5 to 24V Operating battery voltage range |
| Load dump protected |
| QFN40L (wettable flanks) with exposed pad |
| Timeout watchdog and limp home function |
| Low standby current |
| Boost Section Fixed frequency architecture, programmable by SPI Peak current mode control Dual phase operation supported Input current limitation Soft start Overvoltage protection (OVP) Short feedback failure protection Constant voltage control |
| Fixed frequency architecture, programmable by SPI |
| Peak current mode control |
| Dual phase operation supported |
| Input current limitation |
| Soft start |
| Overvoltage protection (OVP) |
| Short feedback failure protection |
| Constant voltage control |
| Buck section Integrated switching mosfets Lossless current sensing without need of external components Very accurate LED current setting programming inductor's peak current and peak-to-peak current ripple Adjustable peak current by SPI Adjustable current ripple by SPI Integrated PWM generation unit with 10-bit resolution and phase shift Peak current control Constant VLED x TOFF architecture |
| Integrated switching mosfets |
| Lossless current sensing without need of external components |
| Very accurate LED current setting programming inductor's peak current and peak-to-peak current ripple |
| Adjustable peak current by SPI |
| Adjustable current ripple by SPI |
| Integrated PWM generation unit with 10-bit resolution and phase shift |
| Peak current control |
| Constant VLED x TOFF architecture |
| Protection and diagnostic Battery under voltage Temperature warning (2 thresholds) Overtemperature shutdown LED voltage digital feedback through SPI Buck outputs short circuit and open load protection |
| Battery under voltage |
| Temperature warning (2 thresholds) |
| Overtemperature shutdown |
| LED voltage digital feedback through SPI |
| Buck outputs short circuit and open load protection |
Resources
Product Specifications |
|---|
| DS11130 High power LED driver for automotive applications |
Application Notes |
|---|
| AN5420 L99LD20 and L99LD21 Application Design Guidelines |
Alternative Descriptions
| Led Driver, Aec-Q100, Buck/Boost, Qfn | Newark Electronics |
| LED Driver Boost/Buck 2-CH 2-LED PWM 60V 40-Pin QFN T/R | Avnet America |
| LED DRIVER, AEC-Q100, BUCK/BOOST, QFN | element14 |
Frequently Asked Questions
Where can I find additional details, specifications and documents for a L99LD21Q6TR?
Additional datasheets, footprints and schematics for L99LD21Q6TR are listed on our Part Details page. You can also find images and similar parts to L99LD21Q6TR on this page.
What pricing and inventory information can I view?
Distributor pricing and stock information is available for L99LD21Q6TR on our Product Comparison page. Access via the 'View Pricing & Stock' button to view L99LD21Q6TR price breaks, MOQs, lead times, inventory and SKUs from distributors.
What category does L99LD21Q6TR fall under?
The L99LD21Q6TR is listed under Automotive Analog and Power > LED Drivers.
Can I view similar or alternative parts?
You can view similar parts to L99LD21Q6TR when available in the LED Drivers 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 L99LD21Q6TR you can contact the distributor directly for product support, shipping queries etc.
Is the L99LD21Q6TR RoHS compliant?
Yes. This part has been flagged as RoHS Compliant by STMicroelectronics.
Which authorised distributors for L99LD21Q6TR have stock available?
Authorised distributors including Future Electronics, Newark Electronics, Avnet America, element14 and Farnell have stock available or on a lead time for L99LD21Q6TR.
How do I check stock and lead times for all distributors?
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