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參數(shù)資料
| 型號(hào)： | AAT3170 |
| 廠商： | Advanced Analog Technology,lnc. |
| 英文描述： | High Current LED Flash Driver Charge Pump IC |
| 中文描述： | 高電流LED閃光燈驅(qū)動(dòng)電荷泵芯片 |
| 文件頁(yè)數(shù)： | 12/15頁(yè) |
| 文件大小： | 427K |
| 代理商： | AAT3170 |
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AAT3170
High Current LED Flash Driver Charge Pump IC
12
3170.2006.11.1.1
LED Selection
The AAT3170 is designed to drive high-intensity
white LEDs. It is particularly suitable for LEDs with
an operating forward-voltage in the range of 4.2V
to 1.5V.
The charge pump device can also drive other loads
that have similar characteristics to white LEDs. For
various load types, the AAT3170 provides a high-cur-
rent, programmable ideal constant current source.
Device Power Efficiency
The AAT3170 power conversion efficiency
depends on the charge pump mode. By definition,
device efficiency is expressed as the output power
delivered to the LED divided by the total input
power consumed.
η
= P
OUT
P
IN
Figure 1: Flash Plus Auxiliary Lighting.
Figure 2: Flash Plus Status Lighting.
AAT3170
C
OUT
2.2μF
EN/SET
CT
VIN
C1+
C1-
C2+
C2+
VOUT
F1
F2
2.7V to 5.5V
EN/SET
Flash
LED
GND
C
IN
4.7μF
C1
1μF
C2
1μF
STAT2
STAT1
AAT3170
C
OUT
2.2μF
EN/SET
VIN
C1+
C1-
C2+
C2-
VOUT
F1
F2
2.7V to 5.5V
EN/SET
Flash
LED
GND
C
IN
4.7μF
C1
1μF
C2
1μF
AUX_EN
CT
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AAT3170_08 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:High Current LED Flash Driver Charge Pump IC |
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| AAT3171 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:High Current, High Efficiency Charge Pump with Auto-Timer |
| AAT3171AIWP-T1 | 制造商:SKYWORKS SOLUTIONS INC 功能描述:800MA FLASH DRIVER CHPUMP 12TDFN TR |
| AAT3171IWP-T1 | 制造商:Skyworks Solutions Inc 功能描述:Voltage Regulators - Switching Regulators Hi Cur Hi Efficiency Charge Pump w/ Timer |
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