AP3009KTR-E1
AP3009KTR-E1 Datasheet
AP3009
| Part | Datasheet |
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AP3009KTR-E1 |
AP3009KTR-E1 (pdf) |
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| Data Sheet WHITE LED STEP-UP CONVERTER General Description AP3009 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. • 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 The over output voltage protection is equipped in • Cellular Phones AP3009. When any LED is broken or in other abnor- • Digital Cameras mal conditions, the output voltage will be clamped to • LCD modules 30V. • GPS Receivers • PDAs, Handheld Computers The AP3009 is available in standard SOT-23-6 pack- age. SOT-23-6 Figure Package Type of AP3009 BCD Semiconductor Manufacturing Limited WHITE LED STEP-UP CONVERTER Pin Configuration K Package SOT-23-6 Pin 1 Mark VOUT 1 GND 2 6 SW 5 VIN 4 CTRL Data Sheet AP3009 Figure Pin Configuration of AP3009 Top View Pin Description Pin Number 1 2 3 Pin Name VOUT GND FB CTRL VIN SW Function Output Pin. Connected to the cathode of internal schottky diode Ground Pin Voltage Feedback. Reference voltage is 200mV Shutdown and Dimming Pin. Connect to 1.8V or higher to enable device Connect to 50mV or less to disable device Connect to a voltage between 1.8V and 50mV to achieve linear dimming Input Supply Pin. Must be locally bypassed Switch Pin. Connect external inductor BCD Semiconductor Manufacturing Limited 2 WHITE LED STEP-UP CONVERTER Functional Block Diagram Data Sheet AP3009 VREF 200 mV CTRL 4 VOUT DRIVER COMPARATOR RAMP GENERATOR 2 GND MHz OSCILLATOR Ordering Information AP3009 Circuit Type Package K SOT-23-6 E1 RoHS TR Tape and Reel Package SOT-23-6 Temperature Range -40 to 85oC Part Number AP3009KTR-E1 Marking ID E9T BCD Semiconductor's products as designated with "E1" suffix in the part number are RoHS compliant. Packing Type Tape & Reel BCD Semiconductor Manufacturing Limited 3 WHITE LED STEP-UP CONVERTER Absolute Maximum Ratings Note 1 Data Sheet AP3009 Parameter Value Unit Input Voltage SW Voltage FB Voltage CTRL Voltage Thermal Resistance Junction to Atmosphere, no Heat sink Operating Junction Temperature oC/W Storage Temperature Range TSTG -65 to 150 Lead Temperature Soldering, 10sec TLEAD ESD Machine Model ESD Human Body Model 2000 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. Recommended Operating Conditions Parameter Operating Temperature Range Input Voltage CTRL Voltage Unit VCTRL BCD Semiconductor Manufacturing Limited 4 Data Sheet WHITE LED STEP-UP CONVERTER Electrical Characteristics VIN=3V, VCTRL =3V, TA=25oC, unless otherwise specified. |
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