ADI公司提供各类LED驱动器产品，适合汽车到显示屏及键盘LED背光等各种应用。例如AD8240，设计用于汽车应用，既可用于驱动也可用于监控LED配件。AD8240通过降低与LED驱动相关的复杂度来降低系统成本，包括过流保护，并采用MSOP封装。ADP8860/70电荷泵LED驱动器设计用于驱动最多七个并联白色LED，内置控制器可根据环境条件自动调光。ADP8860/70可独立控制各LED电流，允许单个LED背光驱动器用于满足多个照明要求，例如同时实现LCD背光和键盘背光。这些智能状态机产品通过减少处理器交互来延长电池使用时间，并通过降低软件复杂度来加快上市时间。
有关ADI公司电源产品的问题，请访问中文技术论坛 电源支持社区。
| Part# |  | Product Description | LED # | LED Configuration | Topology | I2C Support | Max Iout (mA) | Brightness Control | US Price 1000-4999 |
|---|---|---|---|---|---|---|---|---|---|
| ADP1649 | ✓ | 1.0 A LED Flash Driver w/ I2C-Compatible Interface | 1 | Serial | Inductive | Yes | 1A | I2C |
$ |
| ADP1650 | 1.5 A LED Flash Driver with I2C-Compatible Interface | 1 | Serial | Inductive | Yes | 1.5A | I2C |
$ | |
| ADP1653 | Serial 2 WLED Flash Driver | 2 | Serial | Inductive | Yes | 500mA | I2C |
$ | |
| ADP1655 | Serial 2 WLED Flash Driver | 2 | Serial | Inductive | Yes | 400mA | I2C |
$ | |
| ADP1660 | ✓ | Dual 750 mA LED Flash Drvr w/ I2C-Compatible Interface | 2 | Parallel | - | Yes | 750mA | - |
$ |
Step-Up (Boost) LED Drivers
| Part Number | Description | Vin (min) (V) | Vin (max) (V) | VOUT Max (V) | Number of Strings | Max LEDs Per String | Max Current Per String (mA) | Boost Type | Switching Frequency (MHz) | I2C Support | Package | Price @ 1k ($U.S.) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ADD5201 | 8-string White LED driver | 6 | 21 | 45 | 8 | 12 | 30 (240 total) | Inductive | 1 | Yes | 28-lead LFCSP | 1.4 |
| ADD5203 | 8-string White LED driver | 6 | 21 | 45 | 8 | 12 | 30 (240 total) | Inductive | 1 | Yes | 28-lead LFCSP | 1.4 |
| ADD5205 | 4-string White LED driver | 2.18 | 18 | 28 | 4 | 6 | 25 (100 total) | Inductive | 1 | No | 12-lead LFCSP | 1.15 |
| ADD5207 | 4-string White LED driver | 6 | 21 | 36 | 4 | 10 | 25 (100 total) | Inductive | 1 | No | 14-lead LFCSP | 1.32 |
| ADD5211 | 4-string White LED driver | 3.5 | 40 | 80 | 4 | 22 | 200 (800 total) | Inductive | 0.2 to 1.2 | No | 24-lead LFCSP | 1.4 |
| ADP5501 | Serial 6 WLED Driver with ALS , RGB | 2.7 | 5.5 | 24 | 1 | 6 | 30 | Inductive | Variable | Yes | 24-lead LFCSP | 1.2 |
| ADP5520 | Serial 6 WLED Driver with ALS , RGB, KBRD | 2.7 | 5.5 | 24 | 1 | 6 | 30 | Inductive | Variable | Yes | 24-lead LFCSP | 1.66 |
Step-Down (Buck) LED Drivers
| Part Number | Description | Vin (min) (V) | Vin (max) (V) | Number of Strings | Max LEDs Per String | Max Current Per String (mA) | Switching Frequency (MHz) | Package | Price @ 1k ($U.S.) |
|---|---|---|---|---|---|---|---|---|---|
| ADP2384 | 20V, 4A synchronous step-down DC-to-DC regulator | 4.5 | 20 | 1 | 5 | 4000 | 0.2 to 1.4 | 24-lead LFCSP | 1.74 |
| ADP2386 | 20V, 6A synchronous step-down DC-to-DC regulator | 4.5 | 20 | 1 | 5 | 6000 | 0.2 to 1.4 | 24-lead LFCSP | 2.04 |
| ADP2441 | 36V, 1A, synchronous, step-down DC-to-DC regulator | 4.5 | 36 | 1 | 10 | 1000 | 0.2 to 1 | 12-lead LFCSP | 1.78 |
Current Sink LED Drivers
| Part Number | Description | Vin (min) (V) | Vin (max) (V) | # of Strings | Max LEDs per String | Max Current per String (mA) | Pin/Package | Pricing ($@1k) |
|---|---|---|---|---|---|---|---|---|
| ADP8140 | High Current LED Driver with Adaptable Power Control | 3.3 | 30 | 4 | 28 | 500 | LFCSP-16 | 1.5 |
Inductorless (Charge Pump) LED Drivers
| Part Number | Description | Vin (min) (V) | Vin (max) (V) | Vout (min) (V) | Vout (max) (V) | # of Strings | LEDs per String | Max Current per String (mA) | Boost Type | I2C Support | Pin/Package | Pricing ($@1k) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ADM8843 | PWM Parallel 4 WLED Driver | 2.6 | 5.5 | Vin | 5.5 | 4 | 1 | 20 | Charge Pump | No | LFCSP-16 | 0.5 |
| ADM8845 | PWM Parallel 6 WLED Driver | 2.6 | 5.5 | Vin | 5.5 | 6 | 1 | 30 | Charge Pump | No | LFCSP-16 | 0.71 |
| ADP8860 | Parallel 7 WLED Driver with ALS | 2.5 | 5.5 | 4.3 | 5.5 | 7 | 1 | 30 | Charge Pump | Yes | LFCSP-20; WLCSP-20 | 1.36 |
| ADP8861 | Parallel 7 WLED Driver | 2.5 | 5.5 | 4.3 | 5.5 | 7 | 1 | 30 | Charge Pump | Yes | LFCSP-20; WLCSP-20 | 1.22 |
| ADP8863 | Parallel 7 channel Fun Lighting LED Driver | 2.5 | 5.5 | 4.3 | 5.5 | 7 | 1 | 30 | Charge Pump | Yes | LFCSP-20; WLCSP-20 | 1.22 |
| ADP8866 | Charge Pump Driven 9-Channel LED Driver with Automated LED Lighting Effects | 2.5 | 5.5 | 4.3 | 5.5 | 9 | 1 | 25 | Charge Pump | Yes | LFCSP-20 | 1.48 |
| ADP8870 | Parallel 7 WLED Driver with ALS & cABC | 2.5 | 5.5 | 4.3 | 5.5 | 7 | 1 | 30 | Charge Pump | Yes | LFCSP-20; WLCSP-20 | 1.48 |
ADD5211是一款基于高效率、电流模式、升压转换器技术的四通道白光LED驱动器，适合背光应用。升压控制器以4.5 V至40 V的输入电压以及介于200 kHz和1.2 MHz之间的引脚可调节工作频率，驱动外部MOSFET开关，以便执行升压调节。采用可调节的UVLO功能，以降低关断时的输入电流。
ADD5211内置四个经过调节的电流吸收器，可实现均匀的亮度。每个电流吸收器的输出电流可从40 mA驱动至高达200 mA，并且LED驱动电流可由外部电阻通过引脚进行调整。ADD5211集成输入PWM接口，最多能够驱动四个并联LED串，各串由多个LED串联在一起，各串之间的电流匹配精度为±1.5%。
其它特性包括故障指示器输出、LED短路保护、LED开路保护、升压输出短路保护、过压保护、逐周期限流和针对IC以及LED阵列的热关断。可编程软启动用于降低启动时的浪涌电流。<
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