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參數(shù)資料
| 型號(hào)： | HV9903 |
| 廠商： | Supertex, Inc. |
| 元件分類： | LED驅(qū)動(dòng)器 |
| 英文描述： | White LED Driver |
| 中文描述： | 白光LED驅(qū)動(dòng)器 |
| 文件頁(yè)數(shù)： | 10/12頁(yè) |
| 文件大?。?/td> | 326K |
| 代理商： | HV9903 |
It is also good practice to run the LED’s supply and
return traces as close together as possible, reducing
the loop area of the LED path. Running the return
trace on a separate layer directly underneath the
supply trace would be the ideal layout.
The 3 pads along the centerline on the underside of
the HV9903 are internally connected to pin 2 and
need not be connected externally to ground.
The HV9903’s MLP package fits in most pad layouts
designed for a 6-pin SOT-23.
Split Supply Operation
The HV9903 LED driver may be used in Split Supply
application by powering the power stage directly from
the batteries, while powering the HV9903 (V
DD
) from
an available regulated supply within 2.6V to 4.6V.
The power stage voltage (V
IN
) can be higher than
4.6V so long as the inductor is being operated in
discontinues mode.
Supplying the power stage directly from the batteries
reduces the load on the regulated supply, which in
turn
increases
overall
components small. The same dimming techniques
used in the single-supply application may be used in
this dual-supply application.
efficiency
and
keeps
1
6
5
4
2
3
SW
GND
LED
R
SET
SHDN
V
DD
HV9903
L
D
C
OUT
C
IN
R
SET
Shutdown
Fault
V
IN
C
DD
2.6–4.6V
V
DD
HV9903
HV9903
10
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HV9904 | HV9904 Multi Converter Controller |
| HV9904LG | HV9904 Multi Converter Controller |
| HV9904P | HV9904 Multi Converter Controller |
| HV9904X | HV9904 Multi Converter Controller |
| HV9906 | Simple Off-Line/PFC & >9V DC/DC Switcher |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HV9903DB1 | 制造商:Supertex Inc 功能描述: |
| HV9903K6 | 功能描述:LED照明驅(qū)動(dòng)器 White LED Drvr 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 |
| HV9903K6-G | 功能描述:LED照明驅(qū)動(dòng)器 White LED Drvr 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 |
| HV9904 | 制造商:SUPERTEX 制造商全稱:SUPERTEX 功能描述:HV9904 Multi Converter Controller |
| HV9904LG | 功能描述:功率驅(qū)動(dòng)器IC HVCMOS D2 RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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