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參數(shù)資料
| 型號： | CAT3643HL1-T2 |
| 英文描述： | 3-Channel Ultra High Efficiency Quad-Mode TM LED Driver |
| 中文描述： | 3通道超高效率的Quad - Mode商標(biāo)LED驅(qū)動器 |
| 文件頁數(shù)： | 11/17頁 |
| 文件大小： | 321K |
| 代理商： | CAT3643HL1-T2 |
CAT3643
2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
11
Doc. No. 5022, Rev. B
SET
R
V
6
132
×
LED Current Selection
At power-up, the initial LED current is set to full scale
(100% brightness) by the external resistor R
SET
as
follows:
LED current =
The EN/DIM pin has two primary functions. One
function enables and disables the device. The other
function is LED current dimming with six different
levels by pulsing the input signal, as shown on Figure 3.
On each consecutive pulse rising edge, the LED current
is divided by half to 50%, then 25%, 12.5%, 6.25% and
3.125% dimming levels.
Pulses faster than the minimum T
LO
may be ignored
and filtered by the device. Pulses longer than the
maximum T
LO
may shutdown the device.
The LED driver enters a “zero current” shutdown mode
if EN/DIM is held low for 1.5ms or more.
Figure 3. EN/DIM Digital Dimming Timing Diagram
Table 1. LED Current Dimming Levels
EN/DIM
# of pulses *
EN = High
1
st
2
nd
3
rd
4
th
5
th
6
th
x
th
R
SET
Gain
LED Current
132
66
33
16.5
8.25
4.125
132
SET
R
V
6
6
6
6
5
16
25
.
125
.
132
×
GAIN
×
132
×
66
×
33
×
SET
R
R
V
V
V
V
SET
R
R
V
R
V
SET
×
×
SET
R
6
6
×
6
6
SET
SET
R
V
Device cycling through gain selection
SET
* The gain is changed on the rising edges of the EN/DIM input.
EN/DIM
LED
Current
Shutdown
T
SETUP
T
HI
T
PWRDWN
Shutdown
T
LO
T
LED
100%
50%
25%
12.5%6.25%
3.12%
100%
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CAT3643HV2-GT2 | 功能描述:LED照明驅(qū)動器 LED Driver,Quad mode,3 ch 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 |
| CAT3643HV2-T2 | 功能描述:LED照明驅(qū)動器 LED Driver,Quad mode,3 ch 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 |
| CAT3643HV3 | 制造商:ON Semiconductor 功能描述:IC 3-LED DRIVER QUAD HI EFFICIENCY |
| CAT3643HV3-GT2 | 功能描述:LED照明驅(qū)動器 LED Driver,Quad mode,3 ch 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 |
| CAT3643HV3-T2 | 功能描述:LED照明驅(qū)動器 3-Channel Quad-Mode 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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