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AAT3340

AAT3340首页预览图
型号: AAT3340
PDF文件:
  • AAT3340 PDF在线浏览
功能描述: High Efficiency 1x/1.5x Charge Pump
PDF文件大小: 989.76 Kbytes
PDF页数: 共14页
制造商: ANALOGICTECH[Advanced Analogic Technologies]
制造商LOGO: ANALOGICTECH[Advanced Analogic Technologies] LOGO
制造商网址: http://www.analogictech.com
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  • 深圳市辉华拓展电子有限公司

    9

    0755-82575515,0755-23903180,0755-8257551518129829717马晓琪18129829717华富路航都大厦11F11010804

  • AAT3340ITP-1-T1
  • ANALOGIC 
  • TSOPJW-12 
  • 最新批次 
  • 13250 
  • 绝对原装正品 
  • Email:sam@678ic.com
PDF页面索引
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AAT3340
High Efficiency 1x/1.5x Charge PumpChargePump
TM
PRODUCT DATASHEET
3340.2008.07.1.1 1
www.analogictech.com
General Description
The AAT3340 is a low-noise, constant-frequency charge
pump DC/DC converter that uses a dual-mode load switch
(1x) and fractional (1.5x) conversion to maximize effi-
ciency for white LED applications. The AAT3340 is capable
of driving 4 white LEDs at a total of 80mA from a single
2.7V to 5.5V input. The current sinks may be operated
individually or in parallel while driving higher-current
LEDs. A low external parts count (two 1F flying capacitors
and two small 1F capacitors at V
IN
and V
OUT
) makes the
AAT3340 ideal for small battery-powered applications.
Analogic Tech’s Simple Serial Control (S
2
Cwire) digital
interface is used to enable, disable and set current to
one of 32 levels for the LEDs.
The AAT3340 is equipped with built-in short-circuit and
over-temperature protection. The soft-start circuitry pre-
vents excessive inrush current at start-up and mode
transitions. The AAT3340 family is available in Pb-free,
space-saving TSOPJW and TDFN33 packages, and oper-
ates over the -40°C to +85°C ambient temperature
range.
Features
Dual-Mode (1x/1.5x) Charge Pump
Drives up to 4-Channel Backlight LEDs
32-Level Programmable Backlight Current (linear,
inverting)
Single-wire S
2
Cwire Control
Built-in Thermal Protection
Automatic Soft Start
-40°C to +85°C Temperature Range
TSOPJW-12 and TDFN33-12 Packages
Applications
Cellular and Smart Phones
Digital Still and Video Cameras
PDAs
Portable Devices
Portable Media Players
Other White LED Backlighting
Typical Application
V
BATTERY
3.6V
EN/SET
S
2
Cwire Serial Control
IN
EN/SET
C2+
C2-
C1+
C1-
OUT
BL1
BL2
BL3
GND
C
IN
F
D1
C1
F
C2
F
D2 D3 D4
C
OUT
F
BL4
AAT3340
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