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AP3009

Features: · Inherently Uniform LED Current· High Efficiency: 83% Typical· No Need for Extra Schottky Diode· Over Output Voltage Protection· Drives 2 to 6 LEDs· Fast 1.2MHz Switching Frequency· Uses Tiny 1mm Tall Inductor· Requires Only 0.22µF Output CapacitorApplication· Cellular Phones· Dig...

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SeekIC No. : 004286287 Detail

AP3009: Features: · Inherently Uniform LED Current· High Efficiency: 83% Typical· No Need for Extra Schottky Diode· Over Output Voltage Protection· Drives 2 to 6 LEDs· Fast 1.2MHz Switching Frequency· Uses ...

AP3009 Data Sheet

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Part Number:
AP3009
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

· Inherently Uniform LED Current
· High Efficiency: 83% Typical
· No Need for Extra Schottky Diode
· Over Output Voltage Protection
· Drives 2 to 6 LEDs
· Fast 1.2MHz Switching Frequency
· Uses Tiny 1mm Tall Inductor
· Requires Only 0.22µF Output Capacitor


Application

· Cellular Phones
· Digital Cameras
· LCD modules
· GPS Receivers
· PDAs, Handheld Computers


Specifications

Parameter
Symbol
Value
Unit
Input Voltage
VIN
20
V
SW Voltage
FB Voltage
CTRL Voltage
30
20
20
V
V
V
Thermal Resistance (Junction to Atmosphere, no Heat sink)
RJA
265
°C/W
Operating Junction Temperature
150
°C
Storage Temperature Range
Lead Temperature (Soldering, 10sec)
TSTG
TLEAD
-65 to 150
260
°C
°C
ESD (Machine Model)
ESD (Human Body Model)
250
2000
V
V

Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability.




Description

The AP3009 is an inductor-based DC/DC converter designed to drive up to six white LEDs in series for backlight. Only one feedback resistor is needed to control the LED current and obtain satisfied brightness.

A constant frequency 1.2MHz PWM control scheme is employed in this IC, which means the tiny external components can be used. In fact, 1mm tall inductor and 0.22µF output capacitor for the typical application is very appropriate. Additionally, the schottky diode in boost circuit is integrated in this chip. AP3009 also provide a disable port to ease its use for different systems.

The over output voltage protection is equipped in AP3009. When any LED is broken or in other abnormal conditions, the output voltage will be clamped to 30V.

The AP3009 is available in standard SOT-23-6 package.




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