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參數(shù)資料
| 型號： | AAT3166 |
| 廠商： | Advanced Analogic Technologies, Inc. |
| 英文描述： | High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications |
| 中文描述： | 高效率1x/1.5x/2x電荷泵白光LED應(yīng)用 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大小： | 430K |
| 代理商： | AAT3166 |
General Description
The AAT3166 is a low noise, constant frequency
charge pump DC/DC converter that uses a tri-
mode load switch (1X), fractional (1.5X), and dou-
bling (2X) conversion to maximize efficiency for
white LED applications. The AAT3166 is capable of
driving four LEDs for a total of 108mA from a 2.7V
to 5.5V input. The current sinks may be operated
individually or in parallel for driving higher-current
LEDs. A low external parts count (two 1μF flying
capacitors and two small 1μF capacitors at IN and
OUTCP) make this part ideally suited for small,
battery-powered applications.
AnalogicTech's AS
2
Cwire (Advanced Simple Serial
Control) serial digital input is used to enable, dis-
able, and set current for each LED with a 16-level
logarithmic scale plus four low-current settings down
to 115μA. For optimized efficiency, low-current set-
tings require only 50μA of housekeeping current.
Each output of the AAT3166 is equipped with built-
in protection for output short-circuit and auto-dis-
able for load short-circuit condition. Built-in soft-
start circuitry prevents excessive inrush current
during start-up. Alow-current shutdown feature dis-
connects the load from the input and reduces qui-
escent current to less than 1μA.
The AAT3166 is available in a Pb-free, space sav-
ing, 3
×
3mm TDFN33-12 package and is rated over
the -40°C to +85°C temperature range.
Features
V
IN
Range: 2.7V to 5.5V
Fully Programmable Current with Single Wire
— 16-Step Logarithmic Scale
— 14/18/27mA Max Current
— Four Low-Current Settings Down to 115μA
— Low I
Q
(50μA) for Single-Channel, Low-
Current Mode
Tri-Mode 1X, 1.5X, 2X Charge Pump for
Maximum Efficiency and V
F
Coverage
Drives Up to Four LEDs
Individual Main-Sub (3-1) Group Control
No Inductors, Low Noise Operation
1MHz Constant Switching Frequency
Small Application Circuit
Built-In Thermal Protection
Built-In Auto-Disable for Open Circuit
Automatic Soft Start
I
Q
<1uA in Shutdown
TDFN33-12 Package
Applications
Color (RGB) Lighting
Programmable Current Sink
Transmissive LCD Display
White LED Backlighting
White Photo Flash for Digital Still Cameras
AAT3166
High Efficiency 1X/1.5X/2X Charge
Pump for White LED Applications
Typical Application
2.7V to 5.5V
EN/SET
IN
EN/SET
C2+
C2-
C1+
C1-
OUTCP
D1
D2
D3
GND
AAT3166
C
IN
1
μ
F
D1
C1
1
μ
F
C2
1
μ
F
D2
D3
D4
C
OUT
1
μ
F
D4
3166.2006.05.1.2
1
ChargePump
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AAT3166IWP-T1 | High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications |
| AAT3167 | High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications |
| AAT3167ISN-T1 | High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications |
| AAT3169 | High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications |
| AAT3169ISN-T1 | High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AAT3166IWP-T1 | 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 Applications |
| AAT3167 | 制造商:AAT 制造商全稱:AAT 功能描述:High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications |
| AAT3167_07 | 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 Applications |
| AAT3167IFO-T1 | 制造商:AAT 制造商全稱:AAT 功能描述:High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications |
| AAT3167ISN-T1 | 制造商:AAT 制造商全稱:AAT 功能描述:High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications |
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