参数资料
型号: ISL78100ARZ
厂商: Intersil
文件页数: 4/19页
文件大小: 0K
描述: IC LED DRIVER AUTOMOTIVE 20-QFN
标准包装: 75
拓扑: PWM,降压(降压),升压(升压),切换式电容器(充电泵)
输出数: 1
内部驱动器:
类型 - 主要: 车载,背光
频率: 800kHz ~ 1.2MHz
电源电压: 2.7 V ~ 16 V
输出电压: 32V
安装类型: 表面贴装
封装/外壳: 20-VFQFN 裸露焊盘
供应商设备封装: 20-QFN(4x4)
包装: 管件
工作温度: -40°C ~ 105°C
ISL78100
Typical Performance Curves
100
8 LEDs
95 I LEDpeak = 380mA
99%@100Hz
99%@10kHz
100
95
5 LEDs
I LEDpeak = 380mA
99% @ 10kHz
90
85
50%@1kHz
10%@10kHz
90
85
80
75 99%@1kHz
50%@100Hz
10%@1kHz
80
75
10% @ 10kHz
70
65
50%@10kHz
10%@100Hz
70
65
99% @ 100Hz
10% @ 100Hz
60
6
8
10
12
14
16
18
60
4
6
8
10
12
14
16
V IN (V)
FIGURE 1. 8 LEDs EFFICIENCY vs INPUT VOLTAGE vs
DIMMING FREQUENCY AND DUTY CYCLE
V IN (V)
FIGURE 2. 5 LEDs EFFICIENCY vs INPUT VOLTAGE vs
DIMMING FREQUENCY AND DUTY CYCLE
100
3 LEDs
100
95 I LEDpeak = 380mA
95
90
85
80
99%@100Hz
99%@10kHz
90
85
80
8 LEDs
5 LEDs
75
70
65
10%@10kHz
10%@100Hz
75
70
65
I LEDpeak = 380mA
PWM = 10kHz
8 LEDs, V IN = 12V
5 LEDs, V IN = 9V
60
4
6
8
10
60
0
20 40 60 80
100
V IN (V)
FIGURE 3. 3 LEDs EFFICIENCY vs INPUT VOLTAGE vs
DIMMING FREQUENCY AND DUTY CYCLE
PWM DIMMING DUTY CYCLE (%)
FIGURE 4. 8 AND 5 LEDs EFFICIENCY vs PWM DUTY CYCLE
400
350
300
250
200
150
I LEDpeak = 380mA
8 LEDs, V IN = 12V
5 LEDs, V IN = 9V
3 LEDs, V IN = 5V
8 LEDs @ 1kHz
5 LEDs @ 100Hz
3 LEDs @ 100Hz
8 LEDs @ 10kHz
4
3
2
1
0
-1
-2
8 LEDs
I LEDpeak = 380mA
10% @ 100Hz
10% @ 10kHz
100
-3
-4
50
0
0
5 LEDs @ 10kHz
20 40
60
80
100
-5
-6
6
8
99% @ 10kHz
99% @ 100Hz
10 12
14
16
18
PWM DIMMING DUTY CYCLE (%)
FIGURE 5. LEDs PWM DIMMING LINEARITY
4
V IN (V)
FIGURE 6. 8 LEDs CURRENT ACCURACY vs INPUT VOLTAGE
FN6626.1
December 24, 2013
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