参数资料
型号: SC4509SKTRT
厂商: Semtech
文件页数: 9/15页
文件大小: 0K
描述: IC LED DRVR WT/OLED BCKLT SOT236
标准包装: 1
拓扑: PWM,升压(升压)
输出数: 1
内部驱动器:
类型 - 主要: 背光
类型 - 次要: OLED,白色 LED
频率: 1MHz ~ 1.4MHz
电源电压: 2.7 V ~ 10 V
输出电压: 20V
安装类型: 表面贴装
封装/外壳: SOT-23-6
供应商设备封装: SOT-23-6
包装: 标准包装
工作温度: -40°C ~ 85°C
产品目录页面: 1359 (CN2011-ZH PDF)
其它名称: SC4509SKDKR
SC4509
POWER MANAGEMENT
Typical Characteristics
80%
75%
70%
65%
60%
Ef ? ciency vs. LED Current
V IN = 2.7V, V OUT = 16V, (4 LED)
85%
80%
75%
70%
65%
Ef ? ciency vs. LED Current
V IN = 3.3V, V OUT = 16V, (4 LED)
60%
55%
55%
50%
45%
40%
35%
30%
50%
45%
40%
35%
30%
0
2
4
6
8
10
12
14
16
18
20
22
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
85%
80%
75%
70%
ILED (mA)
Ef ? ciency vs. LED Current
V IN = 3.6V, V OUT = 16V, (4 LED)
85%
80%
75%
70%
ILED (mA)
Ef ? ciency vs. LED Current vs. Input Voltage
V OUT = 12V, (3 LED)
65%
60%
55%
50%
45%
40%
35%
65%
60%
55%
50%
45%
40%
35%
VIN = 2.7V
VIN = 3.6V
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
0
5
10
15
20
25
30
35
ILED (mA)
Feedback Voltage vs. Temperature vs. LED Current,
ILED (mA)
Frequency vs. Temperature vs. Input Voltage,
203.0
202.0
V OUT = 16V
1.20
V OUT = 16V
VIN = 2.7V
1.15
201.0
ILED = 20mA
200.0
ILED = 30mA
1.10
VIN = 3.3V
VIN = 3.6V
199.0
1.05
198.0
197.0
1.00
-40
-20
0
20
40
60
80
100
-40
-20
0
20
40
60
80
Temperature (Deg. C)
Temperature (Deg. C)
? 2007 Semtech Corp.
9
www.semtech.com
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