AP3008
AP3008 is WHITE LED DRIVER manufactured by BCD Semiconductor.
Data Sheet
WHITE LED DRIVER General Description
Features
The AP3008 is a 1.2MHz PWM boost switching regulator designed for constant-current white LED driver applications.
The AP3008 can drive a string of 2 to 3 white LEDs from a 2.7V supply in series, ensuring uniform brightness and eliminating several ballast resistors. The AP3008 implements a constant frequency 1.2MHz PWM control scheme. The high frequency PWM operation also saves board space by reducing external ponent sizes. To improve efficiency, the feedback voltage is set to 95m V, which reduces the power dissipation in the current setting resistor.
- Inherently Uniform LED Current
- High Efficiency up to 84%
- Drives 2 to 3 LEDs from a 2.7V Supply
- 1.2MHz PWM Operation Frequency
- Requires Only 0.22µF Output Capacitor
- Shutdown Current: <1µA
- Built-in Output Over-Voltage Protection
- Under Voltage Lock Out (UVLO)
Applications
The AP3008 is equipped with OVP protection ability,
- Digital Cameras the SW pin monitors the output voltage and will turn
- LCD modules off the device if an over-voltage condition is present to
- GPS Receivers prevent damage from an open circuit condition.
- Cellular Phones
- PDAs, Handheld puters
The AP3008 is available in SOT-23-5 package.
May 2013 Rev. 2. 0
SOT-23-5 Figure 1. Package Type of AP3008
BCD Semiconductor Manufacturing Limited 1
WHITE LED DRIVER Pin Configuration
K Package (SOT-23-5)
SW 1 GND 2
FB 3
5 VIN 4 SHDN
Figure 2. Pin Configuration of AP3008 (Top...
