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参数资料
| 型号： | MAX16823EVKIT+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/12页 |
| 文件大小： | 0K |
| 描述： | EVAL KIT FOR MAX16823 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 电流 - 输出 / 通道： | 550mA |
| 输出及类型： | 3，非隔离 |
| 特点： | 可调光 |
| 输入电压： | 6.5 ~ 16 V |
| 已供物品： | 板 |
| 已用 IC / 零件： | MAX16823 |
High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
ICM7555. When V STOP is present, DIM is pulled up to
V STOP . The PWM dimming operation is disabled and
the LEDs light up to full brightness. See the ICM7555
data sheet for formulas to calculate the dimming fre-
quency and the duty cycle.
Outputs Latch-Off
Figure 3 shows a circuit with DIM1, DIM2, DIM3, and
LEDGOOD connected through a resistor to V REG . This
circuit is useful for applications that require all outputs
to latch off when one of the LEDs opens. The
MAX16823 resumes current regulation again through
power cycling, once the fault condition is removed.
Other Applications
The application circuit in Figure 4 implements a two-
level brightness current for TAIL/STOP lights. In TAIL
operation, Q1 is off and R CS1 sets the output current. In
STOP operation, Q1 turns on and the output current is
set by a parallel combination of R CS1 and R2.
Figure 5 shows an application circuit with the
MAX16823 using a single BJT to provide high output
current. For proper operation:
V IN ( MIN ) > V BE ( MAX ) + V FT ( MAX ) + V CS _ + V DO ( MAX )
For minimized dropout, the LEDs can be placed in the
collector.
t ON
DIM
t OFF
LEDGOOD GOES
LEDGOOD
Figure 1. LEDGOOD Timing Delay
STOP
D1
LOW WHEN t OFF > t DELAY
TAIL
R1
D4
C1
IN
OUT3
OUT2
OUT1
REG
R2
D2
DIM1
MAX16823
CS1
0.1 μ F
LEDs
R3
DIS
IN
OUT
D3
DIM2
CS2
R CS1
TH
TRG
GND
100k Ω
DIM3
R CS2
C2
ICM7555
GND
CS3
R CS3
Figure 2. PWM Dimming Operation with ICM7555
8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16823EVKIT+ | 功能描述:LED 照明开发工具 MAX16823 Eval Kit RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装: |
| MAX16824AUE/V+ | 功能描述:LED照明驱动器 3Ch Linear HB 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 |
| MAX16824AUE/V+T | 功能描述:LED照明驱动器 3Ch Linear HB 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 |
| MAX16824AUE+ | 功能描述:LED照明驱动器 3Ch Linear HB 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 |
| MAX16824AUE+T | 功能描述:LED照明驱动器 3Ch Linear HB 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 |
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