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參數(shù)資料
| 型號： | FAN5606 |
| 廠商： | Fairchild Semiconductor Corporation |
| 元件分類： | LED驅(qū)動器 |
| 英文描述： | Serial LED Driver with Current-Regulated, Step-Up DC/DC Converter |
| 中文描述： | 串行LED驅(qū)動電流調(diào)節(jié)，升壓型DC / DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 6/9頁 |
| 文件大小： | 112K |
| 代理商： | FAN5606 |
FAN5606
PRODUCT SPECIFICATION
6
REV. 1.0.3 1/7/05
PWM Control
3. A and B are PWM.
(Continued)
I
LED
(Average) =
δ
x 20mA, where
δ
is Duty Cycle.
Notes:
4. Proportionally select the duty cycle to achieve a typical LED current between 1mA to 4mA.
5. Maximum PWM frequency can be up to 30KHz.
6. Proportionally select the duty cycle to achieve a typical LED current between 1mA and 19mA.
B Input (PWM)
A Input (PWM)
1KHz
1KHz
s
D 30%
D 70%
1KHz
1KHz
s
s
s
s
s
D 30%
D 70%
LED CURRENT
s
0mA
OFF
I
LED
(Average)
= 0.3 x 20mA = 6mA
I
LED
(Average)
= 0.7 x 20mA = 14mA
Applications Information
Inductor Selection
The inductor is one of the main components required by the
boost converter to store energy. The amount of energy stored
in the inductor and transferred to the load is controlled by the
regulator using PWM and pulse skipping techniques. In most
cases, the FAN5606 operates the inductor in discontinuous
conduction mode.
To ensure proper operation of the current regulator over the
entire range of conditions, the inductor should be selected
based on the maximum required power (P
mum input voltage (V
IN
).
(
P
OUT
OUT
) and the mini-
where units of L, V
respectively and F = 0.4 is a factor depending upon the
FAN5606 architecture.
IN
, and P
OUT
are in
μ
H, Volt, and Watt,
The above relation is applicable up to P
L = 4.3
μΗ ,
or greater. The peak current in the inductor is:
OUT
= 0.6W and
where T
driving upto 6 LEDs, type QTLP670CiW is L = 6.8
at minimum 0.5A.
ON_Max
= 1.25
μ
S. The recommended inductor for
μ
H rated
Low ESR capacitors should be used to minimize the input
and output ripple voltage. Use of C
IN
= 4.7
μ
F/6.3V and
C
OUT
= 4.7
μ
F/25V type X5R/X7R multi layer ceramic
capacitor are recommended.
A larger value input capacitor placed as close as possible to
FAN5606 may be needed to reduce the input voltage ripple
in noise sensitive applications. An additional LC filter
between the battery and the FAN5606 input can help to fur-
ther reduces the battery ripple to the level required by a par-
ticular application.
L
IN
-V
)
2
F
×
<
I
T
--------------------------------------------------
V
×
L
=
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| FAN5606DMPX | Serial LED Driver with Current-Regulated, Step-Up DC/DC Converter |
| FAN5607 | LED Driver with Adaptive Charge Pump DC/DC Converter |
| FAN5607HMPX | LED Driver with Adaptive Charge Pump DC/DC Converter |
| FAN5608DMPX | Serial/Parallel LED Driver with Current-Regulated, Step-Up DC/DC Converter |
| FAN5608MPX | Serial/Parallel LED Driver with Current-Regulated, Step-Up DC/DC Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FAN5606DMPX | 功能描述:LED照明驅(qū)動器 Serial LED Driver DC/DC UP Converter RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| FAN5606DMPX_Q | 功能描述:LED照明驅(qū)動器 Serial LED Driver DC/DC UP Converter RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| FAN5607 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:LED Driver with Adaptive Charge Pump DC/DC Converter |
| FAN5607_AEA3026B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| FAN5607HMPX | 功能描述:LED照明驅(qū)動器 LED Driver w/ Adap Charge Pump DC/DC RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
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