参数资料
型号: MAX16818ETI+T
厂商: Maxim Integrated
文件页数: 5/25页
文件大小: 0K
描述: IC LED DRIVR PWM CONTROL 28-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
拓扑: 高端,低端,PWM,SEPIC,降压(降压),升压(升压)
输出数: 1
内部驱动器:
类型 - 主要: 车载,背光
类型 - 次要: 高亮度 LED(HBLED)
频率: 125kHz ~ 1.5MHz
电源电压: 4.75 V ~ 5.5 V,7 V ~ 28 V
输出电压: 5.1V
安装类型: 表面贴装
封装/外壳: 28-WFQFN 裸露焊盘
供应商设备封装: 28-TQFN-EP(5x5)
包装: 带卷 (TR)
工作温度: -40°C ~ 85°C
1.5MHz, 30A High-Efficiency, LED Driver
with Rapid LED Current Pulsing
Typical Operating Characteristics
(T A = +25°C, using Figure 5, unless otherwise noted.)
CURRENT-SENSE THRESHOLD
SUPPLY CURRENT (I Q ) vs. FREQUENCY
SUPPLY CURRENT vs. TEMPERATURE
vs. OUTPUT VOLTAGE
60
50
40
EXTERNAL CLOCK
NO DRIVER LOAD
V IN = 24V
70
68
29.0
28.5
28.0
66
30
20
V IN = 12V
64
27.5
27.0
10
0
V IN = 5V
62
60
V IN = 12V
f SW = 250kHz
C DL /C DH = 22nF
26.5
26.0
V IN = 12V
f SW = 250kHz
100
300
500
700
900
1100 1300 1500
-40
-15
10
35
60
85
0
1
2
3
4
5
FREQUENCY (kHz)
HICCUP CURRENT LIMIT vs. R EXT
TEMPERATURE ( ° C)
V CC LOAD REGULATION
vs. INPUT VOLTAGE
V OUT (V)
DRIVER RISE TIME
vs. DRIVER LOAD CAPACITANCE
26.0
25.5
5.25
5.15
100
80
V IN = 12V
f SW = 250kHz
V IN = 24V
25.0
24.5
5.05
V IN = 12V
60
DL
24.0
23.5
V IN = 12V
f SW = 250kHz
R1 = 1m ?
4.95
4.85
V IN = 5V
40
20
DH
V OUT = 1.5V
23.0
4.75
0
0
4
8
12
16
20
0
25
50
75
100
125
150
1
6
11
16
21
R EXT (M ? )
DRIVER FALL TIME
V CC LOAD CURRENT (mA)
HIGH-SIDE DRIVER (DH) SINK
CAPACITANCE (nF)
LOW-SIDE DRIVER (DL) SINK
100
vs. DRIVER LOAD CAPACITANCE
V IN = 12V
f SW = 250kHz
AND SOURCE CURRENT
MAX16818 toc08
C LOAD = 22nF
V IN = 12V
AND SOURCE CURRENT
MAX16818 toc09
C LOAD = 22nF
V IN = 12V
80
60
40
20
0
DL
DH
2A/div
3A/div
1
6
11
16
21
100ns/div
100ns/div
CAPACITANCE (nF)
_______________________________________________________________________________________
5
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