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參數(shù)資料
| 型號(hào)： | AAT3174 |
| 廠商： | Advanced Analogic Technologies, Inc. |
| 英文描述： | High Current, High Efficiency Charge Pump |
| 中文描述： | 大電流，高效率電荷泵 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大?。?/td> | 285K |
| 代理商： | AAT3174 |
General Description
The AAT3174 is a high output current, high effi-
ciency, low noise, low profile charge pump DC/DC
converter. The device is ideal for multi-functional
LED photo-flash applications where solution cost,
size, and efficiency are critical.
The AAT3174 is capable of driving a regulated out-
put current up to 800mA. Output current levels can
be easily programmed in 16 steps through
AnalogicTech's Simple Serial Control (S
2
Cwire)
interface controlled by a single microcontroller
GPIO line. This allows smooth transitions and flexi-
ble adjustment of brightness in flash or other light-
ing modes. The maximum output current can also
be set with an external R
SET
resistor.
The tri-mode (1X/1.5X/2X) operation of the internal
charge pump offers excellent power efficiency
throughout the output current range for both flash
and movie modes. Combined with a low external
parts count (two 1μF flying capacitors and two
small bypass capacitors at V
IN
and OUT), the
AAT3174 is ideally suited for small battery-pow-
ered applications.
The AAT3174 has a thermal management system to
protect the device in the event of a short-circuit con-
dition at the output pin. Built-in soft-start circuitry pre-
vents excessive inrush current during start-up. The
shutdown feature disconnects the load from V
IN
and
reduces quiescent current to less than 1μA.
The AAT3174 is available in a Pb-free, thermally-
enhanced 12-pin 3x3mm TDFN package and is spec-
ified over the -40°C to +85°C temperature range.
Features
Up to 800mA Output Current
Tri-Mode 1X/1.5X/2X in Current Mode
16 Current Steps Set by S
2
Cwire
External R
SET
to Set Maximum Current
<1μA of Shutdown
Small Application Circuit
No Inductors
Automatic Soft Start
12-Pin TDFN 3x3mm Package
-40°C to +85°C Temperature Range
Applications
Camcorders
Camera Phones
Digital Still Cameras
PDAs and Notebook PCs
Smart Phones
AAT3174
High Current, High Efficiency Charge Pump
Typical Application
AAT3174
C1
1μF
C2
1μF
C
2.2μF
C
4.7μF
EN/SET
VIN
C1+
C1- C2+
C2-
OUT
FL
V
IN
(2.7V to 5.5V)
Enable or
S
2
Cwire
Flash
LED
GND
RSET
3174.2006.05.1.2
1
ChargePump
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AAT3174IWP-T1 | 制造商:Skyworks Solutions Inc 功能描述:LED DRIVER IC |
| AAT3175 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:High Efficiency 1X/1.5X/2X Charge Pump For White LED Flash Applications |
| AAT3175IWP-T1 | 制造商:Skyworks Solutions Inc 功能描述:LED Lighting Drivers High Efficiency Charge Pump |
| AAT3176AIDH-T1 | 制造商:Skyworks Solutions Inc 功能描述:IC LED DRVR FLASH 10TDFN 制造商:Advanced Analogic Tech 功能描述:AAT3176 Series 500 mA 5.5 V 1.5 MHz LED Photo Flash LED Driver IC - TDFN-10 制造商:Skyworks Solutions Inc 功能描述:LED DRIVER IC |
| AAT3176IDH-T1 | 制造商:SKYWORKS SOLUTIONS INC 功能描述:500MA FLASH DRIVER IC 10TDFN TR |
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