参数资料
型号: ISL97691IRTZ
厂商: Intersil
文件页数: 8/19页
文件大小: 0K
描述: IC LED DRVR BACKLIGHT 3D 16TQFN
标准包装: 100
拓扑: PWM,升压(升压)
输出数: 4
内部驱动器:
类型 - 主要: 背光
频率: 400kHz ~ 1.5MHz
电源电压: 2.4 V ~ 5.5 V
输出电压: 26V
安装类型: 表面贴装
封装/外壳: 16-WFQFN 裸露焊盘
供应商设备封装: 16-TQFN(3x3)
包装: 管件
工作温度: -40°C ~ 85°C
ISL97691
Typical Performance Curves
92
4P5S
90
90
88
4P7S
85
80
4P5S
4P7S
86
84
82
80
78
75
70
65
60
55
76
2.8
3.3
3.8 4.3
4.8
50
0
20
40 60
80
100
INPUT VOLTAGE (V)
FIGURE 3. EFFICIENCY vs V IN (I CH = 20mA, f DIM = 200Hz,
V OUT = 21V, LEDs = 4P7S)
20
18
PWM DIMMING (%)
FIGURE 4. EFFICIENCY vs PWM DIMMING (V IN = 3.7V, I CH = 20mA,
f DIM = 200Hz, V OUT = 21V, LEDs = 4P7S)
2.00
1.50
16
1.00
14
12
10
8
0.50
0.00
-0.50
6
-1.00
4
2
-1.50
0
0
20
40 60
80
100
-2.00
0
1
2 3
4
5
PWM DIMMING (%)
FIGURE 5. PWM DIMMING LINEARITY (V IN = 3.7V, f DIM = 200Hz,
V OUT = 21V, LEDs = 4P7S)
I_L
V_OUT
V_LX
V_CH
FIGURE 7. START-UP (100% DIRECT PWM DIMMING, V IN = 3.7V,
I CH = 20mA, f DIM = 200Hz, LEDs = 4P7S)
8
CHANNEL NO
FIGURE 6. CHANNEL MATCHING ACCURACY (V IN = 3.7V,
I CH = 20mA, V OUT = 21V, LEDs = 4P7S)
I_L
V_OUT
V_LX
V_CH
FIGURE 8. START-UP (50% DIRECT PWM DIMMING, V IN = 3.7V,
I CH = 20mA, f DIM = 200Hz, LEDs = 4P7S)
FN7840.1
February 1, 2013
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