降压型 LED 驱动器
Analog Devices 的降压型 LED 驱动器非常适合于那些输入电压高于 LED 电压的应用，比如在许多汽车或工业应用中。这些 LED 驱动器可提供最高的效率、最低的噪声和最小的占板面积。其他特点包括集成化肖特基二极管、准确的 LED 电流匹配、以及多输出能力。
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设计笔记
- DN557 - 低 EMI LED 驱动器具有用于汽车照明的 2A、40V、集成型同步开关
- DN556 - 具集成型电压限制功能的 3A、1MHz 降压模式 LED 驱动器
- DN1038 - 42V High Power Density Buck Regulators in a Tiny QFN Package
- DN376 - Monolithic Converter Drives High Power LEDs
- DN252 - Current-Limited DC/DC Converter Simplifies USB Power Supplies
- DN508 - 60V、同步降压型大电流 LED 驱动器
- DN504 - 具 2.5μA 静态电流的 42V、2.5A 同步降压型稳压器
- DN445 - uModule LED Driver Integrates All Circuitry, Including the Inductor, in a Surface Mount Package
- DN461 - 100V 控制器几乎可从任何输入来驱动高功率 LED 串
- DN449 - 采用 4mm x 5mm QFN 封装的三通道 LED 驱动器能在降压、升压或降压-升压模式中支持 LCD 背光源并提供 3000:1 的 PWM 调光比
- DN1009 - Tiny, Efficient High Power LED Camera Flash Solutions for Cell Phone Applications
- DN392 - 高电压降压型转换器驱动高功率 LED
- DN388 - 宽输入范围 1A LED 驱动器利用汽车和 12VAC 电源给高亮度 LED 供电
- DN340 DC/DC Converter Drives Lumileds White LEDs from a Variety of Power Sources (Chinese Version)
技术文章
- High Efficiency Solar MPPT Battery Charger Using LT8611 and AD5245
- 低 EMI LED 驱动器具有用于汽车照明的 2A、40V、集成型同步开关
- 具集成型电压限制功能的 3A、1MHz 降压模式 LED 驱动器
- 可在 2MHz 提供 95% 效率的 42V 同步降压
- 42V High Power Density Buck Regulators in a Tiny QFN Package
- 扩频频率调制以降低 EMI
- One LED Driver Is All You Need for Automotive LED Headlight Clusters (LT3795)
- Can’t Find the Right Synchronous Boost LED Driver? Use a Synchronous Buck Converter Instead: Boost Mode Topology Drives 25V, 3A LEDs from 12V
- 60V, Synchronous Step-Down High Current LED Driver
- Accurate Constant-Current, Constant-Voltage 20A Power Supply Ensures Safe Charging of Supercaps and Li-Ion Batteries
- 140W Monolithic Switching Regulator Simplifies Constant-Current/Constant-Voltage Regulation
- No PWM Signal Needed for Accurate Dim/Bright Control of Automotive Brake Lights and Other Signal LEDs
- LED Driver Yields 3000:1 True Color PWM Dimming with Any Buck, Boost or Buck-Boost Topology from a Wide 3V–40V Input Range
降压型 LED 驱动器
| SortOrder | Part# | Number of Outputs | Vin (min) (V) | Vin (max) (V) | Output Current (typ) (A) | Vout Max (typ) (V) | Topology | Monolithic | Price (1000+) ($ US) |
|---|---|---|---|---|---|---|---|---|---|
| 1 | LT3966 | 4 | 3 | 60 | 120m | 52 | Boost, Buck, Buck-Boost, LED Driver | Yes | $3.95 (LT3966EUJ#PBF) |
| 2 | LT3952A | 1 | 3 | 42 | 4 | 60 | Boost, Buck, Buck-Boost, LED Driver | Yes | $2.95 (LT3952AEFE#PBF) |
| 3 | LT3964 | 2 | 4 | 36 | 1.6 | 35.64 | Buck, LED Driver | Yes | $4.50 (LT3964EUHE#PBF) |
| 4 | LT3932 | 1 | 3.6 | 36 | 2 | 36 | Buck, LED Driver | Yes | $2.71 (LT3932EUFD#PBF) |
| 5 | LT3922-1 | 1 | 2.8 | 36 | 2 | 40 | Boost, Buck, Buck-Boost | Yes | $2.71 (LT3922EUFD-1#PBF) |
| 6 | LT3922 | 1 | 2.8 | 36 | 2 | 40 | Boost, Buck, Buck-Boost | Yes | $2.71 (LT3922EUFD#PBF) |
| 7 | LT3761A | 1 | 4.5 | 60 | 10 | 100 | Boost, Buck, Buck-Boost, LED Driver, Sepic | No | $3.20 (LT3761AEMSE#PBF) |
| 8 | LT3761 | 1 | 4.5 | 60 | 10 | 100 | Boost, Buck, Buck-Boost, LED Driver, Sepic | No | $3.20 (LT3761EMSE#PBF) |
| 9 | LT3744 | 1 | 3.3 | 36 | 40 | 36 | Buck, LED Driver | No | $3.95 (LT3744EUHE#PBF) |
| 10 | LT8613 | 1 | 3.4 | 42 | 6 | 41.58 | Buck | Yes | $5.20 (LT8613EUDE#PBF) |
| 11 | LT3795 | 1 | 4.5 | 110 | 10 | 110 | Boost, Buck, Buck-Boost, LED Driver, Sepic | No | $3.45 (LT3795EFE#PBF) |
| 12 | LT3797 | 3 | 2.5 | 40 | 5 | 100 | Boost, Buck, Buck-Boost, LED Driver, Sepic | No | $4.95 (LT3797ELXE#PBF) |
| 13 | LT3763 | 1 | 6 | 60 | 20 | 55 | Buck, LED Driver | No | $2.28 (LT3763EFE#PBF) |
| 14 | LT8611 | 1 | 3.4 | 42 | 2.5 | 40 | Buck | Yes | $3.80 (LT8611EUDD#PBF) |
| 15 | LT3745-1 | 16 | 6 | 55 | 75m | 36 | Buck, LED Driver | Yes | $4.95 (LT3745EUJ-1#PBF) |
| 16 | LT3796 | 1 | 6 | 100 | 10 | 100 | Boost, Buck, Buck-Boost, LED Driver, Sepic | No | $3.45 (LT3796EFE#PBF) |
| 17 | LT3745 | 16 | 6 | 55 | 75m | 36 | Buck, LED Driver | Yes | $4.95 (LT3745EUJ#PBF) |
| 18 | LTM8042-1 | 1 | 3 | 30 | 350m | 32 | Boost, Buck, LED Driver | Yes | $8.76 (LTM8042EV-1#PBF) |
| 19 | LTM8042 | 1 | 3 | 30 | 1 | 32 | Boost, Buck, LED Driver | Yes | $8.76 (LTM8042EV#PBF) |
| 20 | LT3596 | 3 | 6 | 60 | 300m | 60 | Buck, LED Driver | Yes | $3.65 (LT3596EUHG#PBF) |
| 21 | LT3746 | 32 | 6 | 55 | 30m | 13 | Buck, LED Driver | Yes | $4.95 (LT3746EUHH#PBF) |
| 22 | LT3741 | 1 | 6 | 36 | 25 | 34 | Buck, LED Driver | No | $3.95 (LT3741EUF#PBF) |
| 23 | LT3597 | 3 | 6 | 60 | 100m | 57 | Buck, LED Driver | Yes | $3.95 (LT3597EUHG#PBF) |
| 24 | LT3743 | 1 | 6 | 36 | 20 | 30 | Buck, LED Driver | No | $4.80 (LT3743EUFD#PBF) |
| 25 | LT3519 | 1 | 3 | 30 | 500m | 45 | Boost, Buck, Buck-Boost, LED Driver, Sepic | Yes | $2.50 (LT3519EMS#PBF) |
| 26 | LTM8040 | 1 | 4 | 36 | 1 | 13 | Buck, LED Driver | Yes | $7.45 (LTM8040EV#PBF) |
| 27 | LT3956 | 1 | 4.5 | 80 | 1.5 | 80 | Boost, Buck, Buck-Boost, Flyback, LED Driver, Sepic | Yes | $3.50 (LT3956EUHE#PBF) |
| 28 | LT3595A | 16 | 4.5 | 45 | 50m | 45 | Buck, LED Driver | Yes | $6.95 (LT3595AEUHH#PBF) |
| 29 | LT3756 | 1 | 6 | 100 | 10 | 100 | Boost, Buck, Buck-Boost, LED Driver, Sepic | No | $2.90 (LT3756EUD#PBF) |
| 30 | LT3755 | 1 | 4.5 | 40 | 10 | 75 | Boost, Buck, Buck-Boost, LED Driver, Sepic | No | $2.75 (LT3755EUD#PBF) |
| 31 | LT3592 | 1 | 3.6 | 36 | 500m | 36 | Buck, LED Driver | Yes | $1.65 (LT3592EDDB#TRPBF) |
| 32 | LT3492 | 3 | 3 | 30 | 300m | 60 | Boost, Buck, Buck-Boost, LED Driver | Yes | $3.70 (LT3492EUFD#PBF) |
| 33 | LT3517 | 1 | 3 | 30 | 1.25 | 40 | Boost, Buck, Buck-Boost, LED Driver | Yes | $2.70 (LT3517EUF#PBF) |
| 34 | LT3595 | 16 | 4.5 | 45 | 50m | 45 | Buck, LED Driver | Yes | $6.95 (LT3595EUHH#PBF) |
| 35 | LT3590 | 1 | 4.5 | 55 | 50m | 55 | Buck, LED Driver | Yes | $1.40 (LT3590EDC#TRPBF) |
| 36 | LT3518 | 1 | 3 | 30 | 1.86 | 45 | Boost, Buck, Buck-Boost, LED Driver | Yes | $2.95 (LT3518EUF#PBF) |
| 37 | LT3496 | 3 | 3 | 30 | 700m | 45 | Boost, Buck, Buck-Boost, LED Driver | Yes | $3.50 (LT3496EUFD#PBF) |
| 38 | LT3476 | 4 | 2.8 | 16 | 1 | 36 | Boost, Buck, Buck-Boost, LED Driver | Yes | $4.64 (LT3476EUHF#PBF) |
| 39 | LT3475-1 | 2 | 4 | 36 | 1.5 | 25 | Buck, LED Driver | Yes | $3.50 (LT3475EFE-1#PBF) |
| 40 | LT3475 | 2 | 4 | 36 | 1.5 | 15 | Buck, LED Driver | Yes | $3.50 (LT3475EFE#PBF) |
| 41 | LT3478 | 1 | 2.8 | 36 | 4.2 | 42 | Boost, Buck, Buck-Boost, LED Driver | Yes | $3.60 (LT3478EFE#PBF) |
| 42 | LT3474-1 | 1 | 4 | 36 | 1 | 26 | Buck, LED Driver | Yes | $2.95 (LT3474EFE-1#PBF) |
| 43 | LT3474 | 1 | 4 | 36 | 1 | 15 | Buck, LED Driver | Yes | $2.95 (LT3474EFE#PBF) |
| 44 | LT3477 | 1 | 2.3 | 25 | 2.66 | 40 | Boost, Buck, Buck-Boost, LED Driver | Yes | $3.15 (LT3477EUF#PBF) |
| 45 | AD8240 | 1 | 9 | 27 | - | - | - | Yes | $1.29 (AD8240YRMZ) |
| 46 | LT1618 | 1 | 1.6 | 18 | 1 | 36 | Boost, Flyback, Sepic | Yes | $1.75 (LT1618EDD#PBF) |
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