参数资料
型号: CAT3647HV3-GT2
厂商: ON Semiconductor
文件页数: 4/14页
文件大小: 0K
描述: IC LED DRVR WHITE BCKLGT 16-TQFN
标准包装: 1
系列: QUAD-Mode®
拓扑: 切换式电容器(充电泵)
输出数: 3
内部驱动器:
类型 - 主要: 背光
类型 - 次要: 白色 LED
频率: 800kHz ~ 1.6MHz
电源电压: 2.5 V ~ 5.5 V
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: 标准包装
工作温度: -40°C ~ 85°C
产品目录页面: 805 (CN2011-ZH PDF)
其它名称: CAT3647HV3-GT2DKR
CAT3647
Table 4. RECOMMENDED EN/DIM TIMING
(For 2.4 V ≤ V IN ≤ 5.5 V, over full ambient temperature range -40 ° C to +85 ° C.)
Symbol
T LO
Name
EN/DIM program low time
Conditions
Min
0.2
Typ
Max
100
Units
m s
T HI
T PWRDWN
T LED
EN/DIM program high time
EN/DIM low time to shutdown
LED current settling time
0.2
1.5
40
m s
ms
m s
T HI
EN/DIM
T LED
T LO
T PWRDWN
100%
97% 93%
100%
LED
Current
Shutdown
32 Levels
3%
0%
Shutdown
Figure 2. EN/DIM Digital Dimming Timing Diagram
LED Current Setting
The full scale LED current is set by the external resistor
connected between the RSET pin and ground. Table 5 lists
standard resistor values for several LED current settings.
Table 5. RESISTOR RSET AND LE D CURRENT
Full Scale LED Current [mA]
2
5
10
15
20
25
30
RSET [k W ]
37.4
14.7
7.50
4.99
3.74
3.00
2.49
http://onsemi.com
4
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