参数资料
型号: MAX1599ETA+T
厂商: Maxim Integrated
文件页数: 4/10页
文件大小: 0K
描述: IC LED DRIVR WHITE BCKLGT 8-TDFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
恒定电流:
拓扑: PWM,升压(升压)
输出数: 1
内部驱动器:
类型 - 主要: 背光
类型 - 次要: 白色 LED
频率: 400kHz ~ 600kHz
电源电压: 2.6 V ~ 5.5 V
输出电压: 26V
安装类型: 表面贴装
封装/外壳: 8-WDFN 裸露焊盘
供应商设备封装: 8-TDFN-EP(3x3)
包装: 带卷 (TR)
工作温度: -40°C ~ 85°C
High-Efficiency, 26V Step-Up Converters
for Two to Six White LEDs
Typical Operating Characteristics
(Circuit of Figure 1, V IN = 3.6V, I LED = 15mA, L1 = 22μH, C IN = 2.2μF, C OUT = 0.1μF, C COMP = 0.1μF, R SENSE = 7.5 ? , 4 LEDs,
T A = +25°C, unless otherwise noted.)
100
MAX1561
EFFICIENCY vs. LED CURRENT
(vs. NUMBER of LEDs)
100
MAX1561
EFFICIENCY vs. LED CURRENT
(vs. INPUT VOLTAGE)
100
MAX1561
EFFICIENCY vs. LED CURRENT
(vs. INDUCTANCE)
90
6 LEDs
90
2.7V IN
90
10 μ H
22 μ H
80
80
80
70
60
4 LEDs
2 LEDs
70
60
4.2V IN
3.6V IN
70
60
47 μ H
4.7 μ H
50
40
50
40
50
40
0
5
10
15
20
0
5
10
15
20
0
5
10
15
20
100
LED CURRENT (mA)
MAX1599 EFFICIENCY vs. LED CURRENT
(vs. NUMBER OF LEDs)
100
LED CURRENT (mA)
MAX1599 EFFICIENCY vs. LED CURRENT
(vs. INPUT VOLTAGE)
100
LED CURRENT (mA)
MAX1599 EFFICIENCY vs. LED CURRENT
(vs. INDUCTANCE)
47 μ H
90
80
6 LEDs
90
80
90
80
22 μ H
70
60
50
40
4 LEDs
2 LEDs
70
60
50
40
4.2V IN
2.7V IN
3.6V IN
70
60
50
40
0
5
10
15
20
0
5
10
15
20
0
5
10
15
20
40
35
LED CURRENT (mA)
INPUT RIPPLE vs. INDUCTANCE
6
5
LED CURRENT (mA)
INPUT RIPPLE SPECTRUM
25
20
LED CURRENT (mA)
LED CURRENT vs. DIRECT-PWM
DIMMING DUTY CYCLE
30
4
25
20
3
15
15
2
10
10
5
0
1
0
5
0
V CTRL = SQUARE WAVE
200Hz < FREQ < 200kHz
0
5
10 15 20 25 30 35 40 45 50
0
1
2
3
4
5
6
7
8
9
10
0
10 20 30 40 50 60 70 80 90 100
INDUCTANCE ( μ H)
FREQUENCY (MHz)
DIRECT-PWM DIMMING DUTY CYCLE (%)
4
_______________________________________________________________________________________
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