參數(shù)資料
型號: CAT4137
元件分類: LED驅(qū)動器
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)動器
文件頁數(shù): 5/14頁
文件大小: 504K
代理商: CAT4137
CAT4137
2005 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
5 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.
FB Pin Voltage vs. Temperature
294
296
298
300
302
304
-50
-25
0
25
50
75
100
TEMPERATURE [°C]
F
3 LEDs at 20mA
Shutdown Voltage vs. Input Voltage
0.2
0.4
0.6
0.8
1.0
3.0
3.5
INPUT VOLTAGE [V]
4.0
4.5
5.0
S
25°C
85°C
-40°C
Under Voltage Lock Out vs. Temperature
1.6
1.7
1.8
1.9
2.0
2.1
2.2
-50
-25
0
25
50
75
100
TEMPERATURE [°C]
U
Switching Frequency vs. Temperature
0.90
0.95
1.00
1.05
1.10
-50
-25
0
25
50
75
100
TEMPERATURE [oC]
C
20mA per LED
Switching Waveforms (3 LEDs in Series)
Switching Waveforms (2 LEDs in Series)
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