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参数资料
| 型号： | MAX16809EVKIT+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 16/20页 |
| 文件大小： | 0K |
| 描述： | EVAL KIT FOR MAX16809 |
| 标准包装： | 1 |
| 电流 - 输出 / 通道： | 40mA |
| 输出及类型： | 16，非隔离 |
| 输出电压： | 32V |
| 特点： | 可调光 |
| 输入电压： | 9 ~ 16 V |
| 已供物品： | 板 |
| 已用 IC / 零件： | MAX16809 |
Integrated 16-Channel LED Driver with
Switch-Mode Boost and SEPIC Controller
LE
t LW
t CL
t CH
t CP
t LS
CLK
t DH
t DS
DIN
D15
D14
D1
D0
t DO
DOUT
OE
OUT_ _
t OEF
t F
t OEW
80%
20%
t OER
t R
D15
Figure 3. 4-Wire Serial-Interface Timing Diagram
Selecting External Component
R SET to Set LED Output Current
LE
OUT_ _
t LRF
The MAX16809 uses an external resistor, R SET , to set
the LED current for outputs OUT0–OUT15. The mini-
mum allowed value of R SET is 311 Ω , which sets the out-
put currents to 55mA. The maximum allowed value of
R SET is 5k Ω (I OUT_ _ = 3.6mA) and the maximum
LE
t LRR
allowed capacitance at SET is 100pF.
Use the following formula to set the output current:
OUT_ _
CLK
R SET =
17,100 V
I OUT _ _
OUT_ _
t CRF
where I OUT_ _ is the desired output current in milliamps
and the value for R SET is in ohms.
Overtemperature Cutoff
CLK
t CRR
OUT_ _
Figure 4. LE and CLK to OUT_ _ Timing
The MAX16809 contains an internal temperature sensor
that turns off all outputs when the die temperature
exceeds +165°C. The outputs are enabled again when
the die temperature drops below +140°C. Register con-
tents are not affected, so when a driver is overdissipat-
ing, the external symptom is the load LEDs cycling on
and off as the driver repeatedly overheats and cools,
alternately turning itself off and then back on again.
16
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相关代理商/技术参数 |
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| MAX1680C/D | 功能描述:直流/直流开关转换器 DICE SALES DICE RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1680ESA | 功能描述:直流/直流开关转换器 125mA f-Selct Swtchd Cap Volt Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1680ESA+ | 功能描述:直流/直流开关转换器 125mA f-Selct Swtchd Cap Volt Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1680ESA+T | 功能描述:直流/直流开关转换器 125mA f-Selct Swtchd Cap Volt Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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