参数资料
型号: BD82103GWL-E2
厂商: Rohm Semiconductor
文件页数: 5/13页
文件大小: 0K
描述: IC LED DRVR WHITE BCKLGT 11-UCSP
标准包装: 1
恒定电流:
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
频率: 560kHz ~ 1.14MHz
电源电压: 2.7 V ~ 5.5 V
输出电压: 4.7V
安装类型: 表面贴装
封装/外壳: 11-TFBGA
供应商设备封装: UCSP50L1
包装: 标准包装
工作温度: -30°C ~ 85°C
产品目录页面: 1373 (CN2011-ZH PDF)
其它名称: BD82103GWL-E2DKR
BD82103GWL
Datasheet
● Function Description
(1) LED driver
? Register access control protocol
LED current is controlled by only EN terminal. It is possible to access the register inside of this chip by using the
protocol below. LED driver ON/OFF, selecting the mode is operated by accessing the registers with using this protocol.
T acc
T LO
T HI
T LAT
T OFF
EN
1
2
n-1
n
(N ≦ 16)
LED Current Setting
0
n
0
Figure 5. Register access protocol
T acc
T LAT
T LAT
T LAT
T LAT
EN
16pulse
15pulse
14pulse
13pulse
1mA
0.5mA
LED Current
OFF
0.125mA
0.25mA
Figure 6. Slope control example
( Note )
? In the case of N > 16, BD82103GWL selects the mode of N = 16.
? LED current is changed by the pulse of EN pin.
Be careful to noise of EN signal.
? Reset BD82103GWL when the set is unusual. (Keep EN=L over Toff time.)
? LED current level
The interface records rising edges of the EN pin and decodes them into 16 different indicated in following table.
Data
1
2
3
4
5
6
7
8
Output current
[mA]
20.0
17.0
14.0
12.0
10.0
8.5
7.0
6.0
Data
9
10
11
12
13
14
15
16
Output current
[mA]
5.0
4.0
3.0
2.0
1.0
0.5
0.25
0.125
www.rohm.com
? 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
5/10
TSZ02201-0G3G0C200240-1-2
16.Oct.2012 Rev.001
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