Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

AAT3158 Datasheet(PDF) 1 Page - Advanced Analogic Technologies

Part No. AAT3158
Description  High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications
Download  11 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  ANALOGICTECH [Advanced Analogic Technologies]
Homepage  http://www.analogictech.com
Logo 

AAT3158 Datasheet(HTML) 1 Page - Advanced Analogic Technologies

 
Zoom Inzoom in Zoom Outzoom out
 1 / 11 page
background image
General Description
The AAT3158 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 AAT3158 is capable of
driving up to four LED channels at 20mA per chan-
nel from a 2.7V to 5.5V input. The current sinks
may be operated individually or in parallel for driv-
ing higher current LEDs. A low external parts count
(two 1µF flying capacitors and two small 1µF
capacitors at VIN and VOUT) make this part ideally
suited for small, battery-powered applications.
AnalogicTech's
S2Cwire™
(Simple
Serial
Control™) serial digital input is used to enable, dis-
able, and set current for each LED with 16 settings
down to 50µA. The low current mode supply cur-
rent can be as low as 50µA to save power.
Each output of the AAT3158 is equipped with built-
in protection for VOUT short circuit and auto disable
for load short-circuit conditions. Built-in soft-start
circuitry prevents excessive inrush current during
start-up. A low current shutdown feature discon-
nects the load from VIN and reduces quiescent cur-
rent to less than 1µA.
The AAT3158 is available in a Pb-free, space-saving
2.85x3.0mm TSOPJW-12 package.
Features
•VIN Range: 2.7V to 5.5V
Fully Programmable Current with Single Wire
— 16 Current Levels
— Four Low Current Settings Down to 50µA
Low IQ (50µA) for Low Current Mode
Tri-Mode 1X, 1.5X, and 2X Charge Pump for
Maximum Efficiency and VF Coverage
Drives Up to Four LED Channels
No Inductors, Low Noise Operation
1MHz Constant Switching Frequency
Small Application Circuit
Built-In Thermal Protection
Automatic Soft-Start
•IQ <1µA in Shutdown
2.85x3mm TSOPJW-12 Package
Applications
Color (RGB) Lighting
Programmable Current Sinks
White LED Backlighting
White Photo Flash for Digital Still Cameras
AAT3158
High Efficiency 1X/1.5X/2X Charge Pump
for White LED Applications
Typical Application
2.7V to 5.5V
EN/SET
VIN
EN/SET
C2+
C2-
C1+
C1-
VOUT
D1
D2
D3
GND
AAT3158
CIN
1µF
COUT
1µF
C1
1µF
C2
1µF
D1
D2
D3
D4
D4
3158.2006.02.1.0
1
ChargePump


Html Pages

1  2  3  4  5  6  7  8  9  10  11 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn