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LT1937ES5 参数 Datasheet PDF下载

LT1937ES5图片预览
型号: LT1937ES5
PDF下载: 下载PDF文件 查看货源
内容描述: 白光LED升压型转换器, SC70和ThinSOT封装 [White LED Step-Up Converter in SC70 and ThinSOT]
分类和应用: 转换器
文件页数/大小: 12 页 / 361 K
品牌: LINER [ LINEAR TECHNOLOGY ]
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LT1937
TYPICAL APPLICATIO S
Li-Ion to Five White LEDs
L
22µH
C
IN
1µF
V
IN
3V TO 5V
EFFICIENCY (%)
V
DC
DIMMING
V
IN
LT1937
SHDN
GND
FB
R1
4Ω
SW
90k
5k
C
IN
: TAIYO YUDEN JMK107BJ105
C
OUT
: TAIYO YUDEN GMK212BJ224
D: CENTRAL CMDSH-3
L: MURATA LQH3C220
5V to Seven White LEDs
L
22µH
C
IN
1µF
D
C
OUT
0.22µF
V
IN
5V
EFFICIENCY (%)
V
DC
DIMMING
V
IN
LT1937
SHDN
GND
FB
R1
4Ω
SW
90k
5k
C
IN
: TAIYO YUDEN JMK107BJ105
C
OUT
: TAIYO YUDEN GMK212BJ224
D: CENTRAL CMDSH-3
L: MURATA LQH3C220
10
U
U
D
Five LED Efficiency
85
C
OUT
0.22µF
80
V
IN
= 3V
75
V
IN
= 3.6V
70
1937 TA03a
65
0
2
4
6
8
LOAD CURRENT (mA)
10
12
1937 TA03b
Seven LED Efficiency
85
80
75
70
1937 TA04a
65
0
5
10
LOAD CURRENT (mA)
15
1937 TA04b
1937f