參數(shù)資料
型號(hào)： CAT4201TD-GT3
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(yè)數(shù)： 6/15頁(yè)
文件大小： 330K
代理商： CAT4201TD-GT3
CAT4201
Doc. No. MD-5025 Rev. B
6
Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
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
RSET Transient Response
Line Transient Response (10V to 13V
)
EXTERNAL COMPONENT SELECTION
Table
1
provides
components L and C2 that offer the best performance
the
recommended
external
relative to the LED current accuracy, LED ripple
current, switching frequency and component size.
1 LED
2 LEDs
LED current
(mA)
L inductor
(μH)
10
22
33
47
C2 Capacitor
(μF)
2.2
4.7
4.7
10
L inductor
(μH)
C2 Capacitor
(μF)
≥
150
22
4.7
< 150
47
2.2
Table 1. External Component Selection
Note:
Larger C2 capacitor values allow to reduce further the LED ripple current if needed.
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CAT4201TD-GT3 制造商:ON Semiconductor 功能描述:IC LED DRIVER BUCK TSOT-23-5 制造商:ON Semiconductor 功能描述:IC, LED DRIVER, BUCK, TSOT-23-5
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