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MAX16814
Integrated, 4-Channel, High-Brightness LED
Driver with High-Voltage DC-DC Controller
Typical Operating Characteristics (continued)
(V IN = V EN = 12V, f SW = 300kHz, R SETI = 15k I , C VCC = 1 F F, V CC = V DRV , NDRV = COMP = OUT_ = unconnected, V OVP = V CS =
V LEDGND = V DIM = V PGND = V SGND = 0V, load = 4 strings of 7 white LEDs, T A = +25 N C, unless otherwise noted.)
LED CURRENT SWITCHING WITH DIM
AT 5kHz AND 50% DUTY CYCLE
MAX16814 toc16
LED CURRENT RISING AND FALLING
WAVEFORM
MAX16814 toc17
FIGURE 2
I OUT1
100mA/div
0A
I OUT2
100mA/div
0A
V DIM
5V/div
0V
160
100 F s/div
OUT_ CURRENT vs. 1/R SETI
I OUT3
100mA/div
0A
I OUT4
100mA/div
0A
1.0
FIGURE 2
4 F s/div
COMP LEAKAGE CURRENT
vs. TEMPERATURE
I LED
50mA/div
0A
140
120
100
80
0.8
0.6
0.4
V DIM = 0V
V COMP = 4.5V
60
40
0.2
V COMP = 0.5V
20
0.010
0.025
0.040
0.055
0.070
0.085
0.100
0
-50
-25
0
25
50
75
100
125
1/R SETI (mS)
TEMPERATURE ( N C)
OUT_ LEAKAGE CURRENT
vs. TEMPERATURE
OVP LEAKAGE CURRENT
vs. TEMPERATURE
RSDT LEAKAGE CURRENT
vs. TEMPERATURE
100
10
1
V DIM = 0V
V OUT = 40V
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
V OVP = 1.25V
250
200
150
100
V RSDT = 0.5V
V RSDT = 2.5V
0.1
-50
-25
0
25
50
75
100
125
0
-50
-25
0
25
50
75
100
125
50
-50
-25
0
25
50
75
100
125
TEMPERATURE ( N C)
Maxim Integrated
TEMPERATURE ( N C)
TEMPERATURE ( N C)
7
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相关代理商/技术参数
MAX16814BEUP+ 功能描述:LED照明驱动器 4Ch HB Drvr w/High-V DC/DC Controller 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
MAX16814BEUP+T 功能描述:LED照明驱动器 4Ch HB Drvr w/High-V DC/DC Controller 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
MAX16814BUTP+ 制造商:Maxim Integrated Products 功能描述:INTEGRATED, 4-CHANNEL, HIGH-BRIGHTNESS LED DRIVER WITH HIGH- - Rail/Tube
MAX16814BUTP+T 制造商:Maxim Integrated Products 功能描述:INTEGRATED, 4-CHANNEL, HIGH-BRIGHTNESS LED DRIVER WITH HIGH- - Tape and Reel
MAX16814BUUP+ 制造商:Maxim Integrated Products 功能描述:LED DRIVER - Rail/Tube
MAX16814BUUP+T 制造商:Maxim Integrated Products 功能描述:LED DRIVER - Tape and Reel
MAX16814CATP+ 制造商:Maxim Integrated Products 功能描述:INTEGRATED, 4-CHANNEL, HIGH-BRIGHTNESS LED DRIVER WITH HIGH- - Rail/Tube
MAX16814CAUP+ 制造商:Maxim Integrated Products 功能描述:INTEGRATED, 4-CHANNEL, HIGH-BRIGHTNESS LED DRIVER WITH HIGH- - Rail/Tube