Buck-Boost LED Drivers
Analog Devices buck/boost LED drivers allow LED bias when the input voltage is either above or below the LED voltage. This is ideal in cases such as a single cell lithium-ion (Li-Ion) battery driving a single LED where the input voltage can vary from 4.2 V fully charged down to 2.7 V fully depleted, while the LED forward voltage can vary from 2 V to 4 V depending on brightness and temperature. Our LED drivers offer the highest efficiency, lowest noise, and the smallest footprints. Other features include integrated Schottky diodes, accurate LED current matching, and multiple output capability.
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Buck-Boost LED Drivers
| SortOrder | Part# | Number of Outputs | Vin (min) (V) | Vin (max) (V) | Output Current (typ) (A) | Vout Max (typ) (V) | Monolithic | Topology | Price (1000+) ($ US) |
|---|---|---|---|---|---|---|---|---|---|
| 1 | LT3942 | 1 | 3 | 36 | 2 | 36 | Yes | Buck-Boost | $2.95 (LT3942EUFD#PBF) |
| 2 | LT3952A | 1 | 3 | 42 | 4 | 60 | Yes | Boost, Buck, Buck-Boost, LED Driver | $2.95 (LT3952AEFE#PBF) |
| 3 | LT8391A | 1 | 4 | 60 | 10 | 60 | No | Buck-Boost, LED Driver | $3.23 (LT8391AEUFD#PBF) |
| 4 | LT3922-1 | 1 | 2.8 | 36 | 2 | 40 | Yes | Boost, Buck, Buck-Boost | $2.71 (LT3922EUFD-1#PBF) |
| 5 | LT3922 | 1 | 2.8 | 36 | 2 | 40 | Yes | Boost, Buck, Buck-Boost | $2.71 (LT3922EUFD#PBF) |
| 6 | LT8391 | 1 | 4 | 60 | 10 | 60 | No | Buck-Boost, LED Driver | $3.23 (LT8391EUFD#PBF) |
| 7 | LT3761A | 1 | 4.5 | 60 | 10 | 100 | No | Boost, Buck, Buck-Boost, LED Driver, Sepic | $3.20 (LT3761AEMSE#PBF) |
| 8 | LT3761 | 1 | 4.5 | 60 | 10 | 100 | No | Boost, Buck, Buck-Boost, LED Driver, Sepic | $3.20 (LT3761EMSE#PBF) |
| 9 | LT3795 | 1 | 4.5 | 110 | 10 | 110 | No | Boost, Buck, Buck-Boost, LED Driver, Sepic | $3.45 (LT3795EFE#PBF) |
| 10 | LT3955 | 1 | 4.5 | 60 | 1 | 80 | Yes | Boost, Buck, Buck-Boost, LED Driver, Sepic | $3.75 (LT3955EUHE#PBF) |
| 11 | LT3954 | 1 | 4.5 | 40 | 4 | 40 | Yes | Boost, Buck, Buck-Boost, LED Driver, Sepic | $3.60 (LT3954EUHE#PBF) |
| 12 | LT3797 | 3 | 2.5 | 40 | 5 | 100 | No | Boost, Buck, Buck-Boost, LED Driver, Sepic | $4.95 (LT3797ELXE#PBF) |
| 13 | LT3796 | 1 | 6 | 100 | 10 | 100 | No | Boost, Buck, Buck-Boost, LED Driver, Sepic | $3.45 (LT3796EFE#PBF) |
| 14 | LT3791 | 1 | 4.7 | 60 | 10 | 60 | No | Buck-Boost, LED Driver | $4.75 (LT3791EFE#PBF) |
| 15 | LTM8042-1 | 1 | 3 | 30 | 350m | 32 | Yes | Boost, Buck, LED Driver | $8.76 (LTM8042EV-1#PBF) |
| 16 | LTM8042 | 1 | 3 | 30 | 1 | 32 | Yes | Boost, Buck, LED Driver | $8.76 (LTM8042EV#PBF) |
| 17 | LT3519 | 1 | 3 | 30 | 500m | 45 | Yes | Boost, Buck, Buck-Boost, LED Driver, Sepic | $2.50 (LT3519EMS#PBF) |
| 18 | LT3956 | 1 | 4.5 | 80 | 1.5 | 80 | Yes | Boost, Buck, Buck-Boost, Flyback, LED Driver, Sepic | $3.50 (LT3956EUHE#PBF) |
| 19 | LT3756 | 1 | 6 | 100 | 10 | 100 | No | Boost, Buck, Buck-Boost, LED Driver, Sepic | $2.90 (LT3756EUD#PBF) |
| 20 | LT3755 | 1 | 4.5 | 40 | 10 | 75 | No | Boost, Buck, Buck-Boost, LED Driver, Sepic | $2.75 (LT3755EUD#PBF) |
| 21 | LT3492 | 3 | 3 | 30 | 300m | 60 | Yes | Boost, Buck, Buck-Boost, LED Driver | $3.70 (LT3492EUFD#PBF) |
| 22 | LT3517 | 1 | 3 | 30 | 1.25 | 40 | Yes | Boost, Buck, Buck-Boost, LED Driver | $2.70 (LT3517EUF#PBF) |
| 23 | LT3518 | 1 | 3 | 30 | 1.86 | 45 | Yes | Boost, Buck, Buck-Boost, LED Driver | $2.95 (LT3518EUF#PBF) |
| 24 | LT3496 | 3 | 3 | 30 | 700m | 45 | Yes | Boost, Buck, Buck-Boost, LED Driver | $3.50 (LT3496EUFD#PBF) |
| 25 | LT3476 | 4 | 2.8 | 16 | 1 | 36 | Yes | Boost, Buck, Buck-Boost, LED Driver | $4.64 (LT3476EUHF#PBF) |
| 26 | LTC3452 | 7 | 2.7 | 5.5 | 50m | 4.5 | Yes | Buck-Boost, LED Driver | $1.80 (LTC3452EUF#PBF) |
| 27 | LT3478 | 1 | 2.8 | 36 | 4.2 | 42 | Yes | Boost, Buck, Buck-Boost, LED Driver | $3.60 (LT3478EFE#PBF) |
| 28 | LTC3454 | 1 | 2.7 | 5.5 | 1 | 5.15 | Yes | Buck-Boost, LED Driver | $1.95 (LTC3454EDD#PBF) |
| 29 | LT3477 | 1 | 2.3 | 25 | 2.66 | 40 | Yes | Boost, Buck, Buck-Boost, LED Driver | $3.15 (LT3477EUF#PBF) |
| 30 | LTC3453 | 4 | 2.7 | 5.5 | 125m | 4.5 | Yes | Buck-Boost, LED Driver | $1.85 (LTC3453EUF#PBF) |
| 31 | LT1618 | 1 | 1.6 | 18 | 1 | 36 | Yes | Boost, Flyback, Sepic | $1.75 (LT1618EDD#PBF) |
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