L99LD21Q6TR
ActiveLED DRIVER BOOST/BUCK 2-CH 2-LED PWM 60V 40-PIN QFN T/R
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L99LD21Q6TR
ActiveLED DRIVER BOOST/BUCK 2-CH 2-LED PWM 60V 40-PIN QFN T/R
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Technical Specifications
Parameters and characteristics for this part
| Specification | L99LD21Q6TR |
|---|---|
| Applications | Lighting |
| Current - Output / Channel | 1.5 A |
| Dimming | PWM |
| Frequency [Max] | 450 kHz |
| Frequency [Min] | 100 kHz |
| Grade | Automotive |
| Internal Switch(s) | True |
| Mounting Type | Surface Mount |
| Number of Outputs | 2 |
| Operating Temperature [Max] | 150 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 40-TFQFN Exposed Pad |
| Qualification | AEC-Q100 |
| Supplier Device Package | 40-QFN (6x6) |
| Topology | Boost, Buck |
| Type | DC DC Regulator |
| Voltage - Supply (Max) [Max] | 24 V |
| Voltage - Supply (Min) [Min] | 5.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 4.55 | |
| 10 | $ 4.09 | |||
| 25 | $ 3.87 | |||
| 100 | $ 3.35 | |||
| 250 | $ 3.18 | |||
| 500 | $ 2.85 | |||
| 1000 | $ 2.41 | |||
| Digi-Reel® | 1 | $ 4.55 | ||
| 10 | $ 4.09 | |||
| 25 | $ 3.87 | |||
| 100 | $ 3.35 | |||
| 250 | $ 3.18 | |||
| 500 | $ 2.85 | |||
| 1000 | $ 2.41 | |||
| Tape & Reel (TR) | 3000 | $ 2.29 | ||
| Newark | Each (Supplied on Cut Tape) | 1 | $ 4.23 | |
| 10 | $ 2.95 | |||
| 25 | $ 2.86 | |||
| 50 | $ 2.76 | |||
| 100 | $ 2.67 | |||
| 250 | $ 2.53 | |||
| 500 | $ 2.45 | |||
| 1000 | $ 2.39 | |||
Description
General part information
L99LD21 Series
The L99LD21 is a flexible LED driver, which is specifically designed for the control of two independent high brightness LED strings for automotive front lighting applications. It consists of a high efficiency monolithic boost controller and a dual buck converter.
The boost controller integrates a high current gate driver for an external n-channel mosfet. It delivers a constant output voltage, up to 60 V, which supplies the inputs of the two integrated or external buck converters.
The boost controller of two devices can be stacked, in order to operate in dual phase for high power applications, with an interleaving pattern for an improved input current ripple.
Documents
Technical documentation and resources