参数资料
型号: ADD5203ACPZ-RL
厂商: Analog Devices Inc
文件页数: 9/24页
文件大小: 0K
描述: IC LED DRVR WHITE BCKLGT 28LFCSP
标准包装: 1
恒定电流:
拓扑: PWM,升压(升压)
输出数: 8
内部驱动器:
类型 - 主要: 背光
类型 - 次要: 白色 LED
频率: 350kHz ~ 1MHz
电源电压: 6 V ~ 21 V
输出电压: 45V
安装类型: 表面贴装
封装/外壳: 28-WFQFN 裸露焊盘,CSP
供应商设备封装: 28-LFCSP-WQ(4x4)
包装: 标准包装
工作温度: -25°C ~ 85°C
其它名称: ADD5203ACPZ-RLDKR

ADD5203
TYPICAL PERFORMANCE CHARACTERISTICS
94
25
92
90
88
I LED = 20mA
BRIGHTNESS = 100%
f SW = 600kHz
8 PARALLEL × 8 SERIES
20
15
10 PARALLEL × 8 SERIES
86
10
84
82
80
5
78
5
10
15
20
25
0
0
25
50
75
100
125
150
175
200
225
2 50
32
30
28
26
24
22
20
18
16
14
12
10
INPUT VOLTAGE (V)
Figure 4. Boost Converter Efficiency vs. Input Voltage
25
20
15
10
5
SMBus BRIGHTNESS SETTING
Figure 7. LED Current vs. SMBus Brightness Setting
8
85
105
125
145
165 185
205
225
245
265
0
5
10
15
20
R SET (k ? )
Figure 5. LED Current vs. R SET
INPUT VOLTAGE (V)
Figure 8. LED Current vs. Input Voltage (I LED = 20 mA)
20
15
10
5
V IN = 15V
BRIGHTNESS = 100%
LEDs = 12 SERIES × 8 PARALLEL
V OUT
20V/DIV
V SW
20V/DIV
SHDN
3V/DIV
I L
1A/DIV
0
0
10
20
30 40 50 60 70
80
90
100
PWM DUTY CYCLE (%)
Figure 6. LED Current vs. PWM Input Duty Cycle
Rev. 0 | Page 9 of 24
Figure 9. Start-Up Waveforms (Brightness = 100%)
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