参数资料
型号: MAX16823ATE/V+
厂商: Maxim Integrated
文件页数: 7/12页
文件大小: 0K
描述: IC LED DRIVER HIGH BRIGHT 16WQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 60
恒定电流:
拓扑: 线性(LDO),开路漏极,PWM
输出数: 3
内部驱动器:
类型 - 主要: 车载
类型 - 次要: 高亮度 LED(HBLED),RGB
电源电压: 5.5 V ~ 40 V
输出电压: 3.41V
安装类型: 表面贴装
封装/外壳: 16-WQFN 裸露焊盘
供应商设备封装: 16-TQFN-EP(5x5)
包装: 管件
工作温度: -40°C ~ 125°C
High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
Block Diagram
REG
UVLO
IN
IN
IN
IN
BANDGAP
I_REG
OUT1
CS1
GND
DIM1
IN
MAX16823
THERMAL
SHUTDOWN
I_REG
OUT2
DIM2
CS2
IN
I_REG
OUT3
DIM3
CS3
LEDGGOOD
LEDGOOD
LGC
DETECTOR
Pulse-Dimming Inputs (DIM_)
The MAX16823 features pulsed or chopped-current
dimming inputs (DIM_) to chop the LED current and to
adjust the brightness. DIM_ also serves as an active-
high enable input. A logic-low at DIM_ turns off OUT_
and a logic-high turns on OUT_. If the signal at DIM
stays low more than the programmed LEDGOOD delay
time, LEDGOOD goes low (Figure 1).
Two Brightness Levels for
TAIL/STOP Lights
Figure 2 shows the PWM dimming operation for the
MAX16823 with an ICM7555 timer. The ICM7555 pro-
vides an adjustable duty cycle using two external resis-
tors and a capacitor. In TAIL operation, the output of
the ICM7555 feeds into DIM and lights up the LEDs.
The LED’s brightness depends on the duty cycle of the
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