Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

AAT3153 Datasheet(PDF) 1 Page - Advanced Analog Technology, Inc.

Part No. AAT3153
Description  High Efficiency 1X/1.5X/2X Charge Pump For White LED Applications
Download  14 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  AAT [Advanced Analog Technology, Inc.]
Homepage  http://www.aatech.com.tw
Logo 

AAT3153 Datasheet(HTML) 1 Page - Advanced Analog Technology, Inc.

 
Zoom Inzoom in Zoom Outzoom out
 1 / 14 page
background image
AAT3153
High Efficiency 1X/1.5X/2X Charge Pump
For White LED Applications
3153.2005.12.0.93
1
ChargePump
General Description
The AAT3153 is a low noise, constant frequency
charge pump DC/DC converter that uses a tri-mode
load switch (1X), fractional (1.5X), and doubling (2X)
conversion to maximize efficiency for white LED
applications. The AAT3153 is capable of driving six
LED channels 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 V
IN and VOUT) makes this part ideally
suited for small, battery-powered applications.
AnalogicTech's S
2Cwire™ (Simple Serial Control™)
serial digital input is used to enable, disable, and
set current for each LED with eight settings (20mA
down to 50µA) including main and sub-display
group control. The AAT3153 consumes extremely
low current internally (50µA typical) at light load for
optimized efficiency.
Each output of the AAT3153 is equipped with built-
in protection for V
OUT 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 V
IN and reduces quiescent cur-
rent to less than 1µA.
The AAT3153 is available in a Pb-free, space-saving,
thermally-enhanced 16-pin 4x4mm QFN package.
Features
•V
IN Range: 2.7V to 5.5V
Fully Programmable Current with Single Wire
— Eight-Step Current: 20mA to 50µA
— Individual Main-Sub Group Control
— Low I
Q (50µA) at Light Load
Tri-Mode 1X, 1.5X, and 2X Charge Pump for
Maximum Efficiency and V
F Coverage
Drives Up to Six LED Channels
No Inductors, Low Noise Operation
1MHz Constant Switching Frequency
Small Application Circuit
Built-In Thermal Protection
Built-In Auto-Disable for Short-Circuit
Automatic Soft Start
•I
Q <1µA in Shutdown
Thermally-Enhanced 4x4mm 16-Pin QFN
Package
Applications
Color (RGB) Lighting
Programmable Current Sinks
White LED Backlighting
White Photo Flash for Digital Still Cameras
Typical Application
C1
1
µF
C2
1
µF
D1
D2
D3
D4
D5
D6
COUT
1
µF
CIN
1
µF
2.7V to 5.5V
EN/SET
VIN
EN/SET
C1+
C1-
C2+
C2-
VOUT
D1
D2
D3
D4
D5
D6
GND
AAT3153


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14 


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