Ultra-Efficient Charge Pumps for
Six White/RGB LEDs in 3mm x 3mm Thin QFN
1 μ F
1 μ F
1 μ F
1 μ F
INPUT
2.7V TO 5.5V
C1P
IN
C1N
C2P
C2N
NEG
1 μ F
INPUT
2.7V TO 5.5V
C1P
IN
C1N
C2P
C2N
NEG
1 μ F
1 μ F
GND
EP
WHITE OR
RGB LED
1 μ F
GND
EP
WHITE OR
RGB LED
MAX8647
LED1
D1
MAX8648
LED1
D1
I 2 C PORT
SDA
LED2
D2
LED2
D2
ON/OFF AND
BRIGHTNESS
SCL
LED3
D3
ENA
LED3
D3
V LOGIC
1.7V TO 5.5V
V DD
LED4
LED5
D4
D5
SERIAL-
PULSE
INTERFACE
ENB
ENC
LED4
LED5
D4
D5
0.1 μ F
LED6
D6
LED6
D6
Figure 5. MAX8647 Typical Application Circuit
1 μ F
1 μ F
Figure 6. MAX8648 Typical Application Circuit
INPUT
2.7V TO 5.5V
C1P
IN
C1N
C2P
C2N
NEG
1 μ F
1 μ F
GND
EP
WHITE OR
ENA
MAX8648
LED1
LED2
LED3
RGB LED
D1
D2
D3
V1
V2
V3
SERIAL-
PULSE
INTERFACE
ENB
ENC
LED4
LED5
LED6
D4
D5
D6
RED CHARGE
INDICATOR
Figure 7. Driving LEDs with Multiple Supplies
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相关代理商/技术参数
MAX8648ETE 制造商:MAXIM 功能描述:Pb Free
MAX8648ETE+ 功能描述:LED照明驱动器 Charge Pump for 6 White/RGB LEDs RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
MAX8648ETE+T 功能描述:LED照明驱动器 Charge Pump for 6 White/RGB LEDs RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
MAX8648EVKIT+ 制造商:Maxim Integrated Products 功能描述:MAX8648 EVAL KIT - Rail/Tube
MAX8649AEWE+T 功能描述:直流/直流开关调节器 1.8A Step-Down Regulator RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5
MAX8649BEWE+T 功能描述:直流/直流开关调节器 1.8A Step-Down Regulator RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5
MAX8649EVKIT+ 制造商:Maxim Integrated Products 功能描述:1.8A STEP-DOWN REGULATOR W/DIFFERENTIAL REMOTE SENSE IN 2MM - Boxed Product (Development Kits)
MAX8649EWE+ 制造商:Maxim Integrated Products 功能描述:1.8A STEP-DOWN REGULATOR W/DIFFEREN - Rail/Tube