參數(shù)資料
型號(hào): CAT4201
元件分類: LED驅(qū)動(dòng)器
英文描述: 350mA High Efficiency Step Down LED Driver
中文描述: 350mA的高效率LED驅(qū)動(dòng)下步
文件頁數(shù): 5/15頁
文件大小: 330K
代理商: CAT4201
CAT4201
Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
5
Doc. No. MD-5025 Rev. B
TYPICAL OPERATION CHARACTERISTICS
V
IN
= 13V, I
LED
= 300mA, L = 22
μ
H, C
1
= 4.7
μ
F, C
2
= 10
μ
F, T
AMB
= 25°C unless otherwise specified
Efficiency vs. LED Current
70
75
80
85
90
95
100
100
150
LED CURRENT [mA]
200
250
300
350
E
1 LED
2 LEDs
LED Current Regulation vs. Temperature
-10
-8
-6
-4
-2
0
2
4
6
8
10
-40
0
40
80
120
TEMPERATURE [°C]
L
VIN = 13V
LED Current vs. Input Voltage (1 LED)
0
50
100
150
200
250
300
350
0
4
8
12
16
20
24
28
INPUT VOLTAGE [V]
L
V
F
= 3.3V
300mA
V
F
= 3.1V
150mA
LED Current vs. Input Voltage (2 LEDs)
0
50
100
150
200
250
300
350
0
4
8
12
16
20
24
28
INPUT VOLTAGE [V]
L
V
F
= 3.3V
300mA
V
F
= 3.1V
150mA
Switching Waveforms
CTRL Power-up
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