參數(shù)資料
型號(hào): CAT4137TS
元件分類: LED驅(qū)動(dòng)器
英文描述: CMOS Boost Converter- White LED Driver
中文描述: 的CMOS升壓轉(zhuǎn)換器,白光LED驅(qū)動(dòng)器
文件頁數(shù): 4/14頁
文件大?。?/td> 504K
代理商: CAT4137TS
CAT4137
2005 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
4 of 14
Doc. 5012 , Rev. A
Typical Characteristics
V
IN
= 3.6V, C
IN
= 1.0uF, C
OUT
= 0.22μF, L = 22μH, with 3 LEDs at 20mA, T
AMB
=25oC, unless otherwise specified.
LED Current vs. Input Voltage (3 LEDs)
0
5
10
15
20
25
30
35
2.0
2.5
3.0
3.5
4.0
4.5
5.0
INPUT VOLTAGE [V]
L
Rfb = 10O
Rfb = 15O
Rfb = 20O
LED Current Regulation
-0.4
-0.2
0.0
0.2
0.4
2.0
2.5
3.0
INPUT VOLTAGE [V]
3.5 4.0
4.5 5.0
5.5
L
Efficiency across Supply Voltage (3 LEDs)
60
70
80
90
100
2.0
2.5
3.0
3.5
4.0
4.5
5.0
INPUT VOLTAGE [V]
E
20mA
15mA
Efficiency across Load Current (3 LEDs)
60
70
80
90
100
0
5
10
15
20
25
30
LED CURRENT [mA]
E
VIN = 3.6V
VIN = 4.2V
Efficiency across Supply Voltage (4 LEDs)
60
70
80
90
100
2.0
2.5
3.0
3.5
4.0
4.5
5.0
INPUT VOLTAGE [V]
E
20mA
15mA
Efficiency across Load Current (4 LEDs)
60
70
80
90
100
0
5
10
15
20
25
30
LED CURRENT [mA]
E
VIN = 3.6V
VIN = 4.2V
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