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参数资料
| 型号： | MAX16839EVKIT+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/11页 |
| 文件大小： | 0K |
| 描述： | KIT EVAL FOR MAX16839 |
| 其它有关文件： | Automotive Product Guide |
| 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： | 100mA |
| 输出及类型： | 3，非隔离 |
| 特点： | PWM 控制 |
| 输入电压： | 5 ~ 40 V |
| 已供物品： | 板 |
| 已用 IC / 零件： | MAX16839 |
High-Voltage, Linear High-Brightness LED
Driver with Open-LED Fault Detect
The MAX16839 detects an open-LED event when V CS
drops below 30mV for 25μs. When the fault condition is
detected, a 2.8mA current source charges the capaci-
tor between FLTS and ground, up to 15V or to V IN if V IN
is less than 15V. If the voltage on FLTS is greater than
1.65V due to the charge retained in the FLTS capacitor,
the LED driver is turned off. This provides an open-LED
fault-protection feature that can be disabled by connect-
ing FLTS to ground. In a multistring application (Figure
2), where all FLTS pins are connected together, a fault
detected on one channel causes other channels to turn
off as well. The retention capability on the FLTS is depen-
dent on the leakage current and the value of the capacitor
used. If the retention capability is high, the fault condition
could be retained or memorized for a long period after the
supply is turned off.
Thermal Protection
The MAX16839 enters thermal-shutdown mode in the
event of overheating. When the junction temperature
exceeds T J = +160 N C, the internal thermal-protection
circuit turns off the series pass element. The MAX16839
recovers from thermal-shutdown mode when the
junction temperature drops to T J = +145 N C. FLTS does
not assert during an overheating event.
12V
50mA
V IN
I LED
t
12V
UVLO
V IN
t
t
LEDGOOD (INTERNAL)
12V FLTS
t
t
50mA
2.5 F s
I LED
t
4 F s
V IN = 5V TO 40V
LED S
C IN =
0.01 F F
CONNECT TO 5V
SUPPLY OR LEAVE
C IN =
0.01 F F
LED S
UNCONNECTED
I LED
SINK
IN
DIM
DIM SIGNAL
DIM
IN
SINK
I LED
R CS
CS
MAX16839
FLTS
GND
FLTS SIGNAL
C FLTS =
0.1 F F
MAX16839
FLTS
GND
CS
R CS
Figure 2. Multistring Application
8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16839EVKIT+ | 功能描述:LED 照明开发工具 MAX16839 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: |
| MAX1683EUK | 制造商:Maxim Integrated Products 功能描述:SWITCHED CAPACITOR VOLTAGE DOUBLERS - Bulk |
| MAX1683EUK+ | 制造商:Maxim Integrated Products 功能描述:CHG PUMP STPUP 4V TO 11V 45MA 5PIN SOT-23 - Rail/Tube 制造商:Maxim Integrated Products 功能描述:IC,unregulated charge pump,MAX1683EUK+T |
| MAX1683EUK+T | 功能描述:电荷泵 Switched-Cap Voltage Doubler RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| MAX1683EUK-T | 功能描述:电荷泵 Switched-Cap Voltage Doubler RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
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