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參數(shù)資料
| 型號： | AAT2803 |
| 廠商： | Advanced Analog Technology,lnc. |
| 英文描述： | Six-Channel White LED Backlight Charge Pump with Flash |
| 中文描述： | 六通道白光LED閃光背光電荷泵 |
| 文件頁數(shù)： | 15/16頁 |
| 文件大?。?/td> | 589K |
| 代理商： | AAT2803 |
Capacitor Characteristics
Ceramic composition capacitors are highly recom-
mended over all other types of capacitors for use
with the AAT2803. Ceramic capacitors offer many
advantages over their tantalum and aluminum elec-
trolytic counterparts. A ceramic capacitor typically
has very low ESR, is lowest cost, has a smaller
PCB footprint, and is non-polarized. Low ESR
ceramic capacitors help maximize charge pump
transient response. Since ceramic capacitors are
non-polarized, they are not prone to incorrect con-
nection damage.
Equivalent Series Resistance
ESR is an important characteristic to consider when
selecting a capacitor. ESR is a resistance internal
to a capacitor that is caused by the leads, internal
connections, size or area, material composition,
and ambient temperature. Capacitor ESR is typi-
cally measured in milliohms for ceramic capacitors
and can range to more than several ohms for tanta-
lum or aluminum electrolytic capacitors.
Ceramic Capacitor Materials
Ceramic capacitors less than 0.1
μ
F are typically
made from NPO or C0G materials. NPO and C0G
materials typically have tight tolerance and are sta-
ble over temperature. Larger capacitor values are
typically composed of X7R, X5R, Z5U, or Y5V
dielectric materials. Large ceramic capacitors, typ-
ically greater than 2.2
μ
F, are often available in low-
cost Y5V and Z5U dielectrics, but capacitors
greater than 1
μ
F are not typically required.
Capacitor area is another contributor to ESR.
Capacitors that are physically large will have a lower
ESR when compared to an equivalent material
smaller capacitor. These larger devices can improve
circuit transient response when compared to an
equal value capacitor in a smaller package size.
AAT2803
Six-Channel White LED Backlight
Charge Pump with Flash
2803.2006.12.1.6
15
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AAT2803ISK-4.5-T1 | Six-Channel White LED Backlight Charge Pump with Flash |
| AAT3110IGU-4.5-T1 | MicroPower⑩ Regulated Charge Pump |
| AAT3110IGU-5.0-T1 | MicroPower⑩ Regulated Charge Pump |
| AAT3110IJS-4.5-T1 | MicroPower⑩ Regulated Charge Pump |
| AAT3110IJS-5.0-T1 | MicroPower⑩ Regulated Charge Pump |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AAT2803ISK-4.5-T1 | 制造商:Skyworks Solutions Inc 功能描述:LED Display Drivers 6-Ch White LED Back- light Charge Pump |
| AAT2805 | 制造商:AAT 制造商全稱:AAT 功能描述:Dual High Efficiency Charge Pump for White LED and Flash Applications |
| AAT2805IXN-4.5-T1 | 制造商:AAT 制造商全稱:AAT 功能描述:Dual High Efficiency Charge Pump for White LED and Flash Applications |
| AAT2806 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:Dual High Efficiency Charge Pump for White LED and Flash Applications |
| AAT2806_07 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:Dual High Efficiency Charge Pump for White LED and Flash Applications |
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