Qdatasheet_Logo
Integrated circuits, Transistor, Semiconductors Search and Datasheet PDF Download Site

AAT3169 Datasheet PDF - Advanced Analogic Technologies

AAT3169 image

Part Name
AAT3169

Other PDF
  no available.

PDF
DOWNLOAD     

page
13 Pages

File Size
836.5 kB

MFG CO.
ANALOGICTECH
Advanced Analogic Technologies ANALOGICTECH

General Description
The AAT3169 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 AAT3169 is capable of driving six LEDs for a total of 180mA 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, batterypowered applications.


FEATUREs
• VIN Range: 2.7V to 5.5V
• Fully Programmable Current with Single Wire
    ▪ 16-Step Logarithmic Scale
    ▪ 15/20/30mA Max Current
    ▪ Four Low-Current Settings Down to 115µA
    ▪ Low IQ (65µA) for Single-Channel, Low-Current Mode
• Tri-Mode 1X, 1.5X, and 2X Charge Pump for Maximum Efficiency and VF Coverage
• Drives Up to Six LEDs
• Individual Main-Sub (5-1) 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
• IQ <1µA in Shutdown
• Thermally-Enhanced STDFN33-14 or QFN44-16 Package


APPLICATIONs
• Color (RGB) Lighting
• Programmable Current Sink
• Transmissive Displays
• White LED Backlighting
• White Photo Flash for Digital Still Cameras


Share Link: GO URL

All Rights Reserved © qdatasheet.com  [ Privacy Policy ] [ Contact Us ]