WHITE LED STEP-UP CONVERTER
The AP3033 is an inductor-based DC/DC boost con- · Up to 92% Efficiency
verter designed to drive LED arrays. 1.3A switching
current allows AP3033 to be used in different 7' to 10'
LCD panel backlights (3S8P LED arrays typically).
Up to 88% Efficiency
A constant frequency 1MHz PWM control scheme is · Fast 1MHz Switching Frequency
employed in this IC, which means tiny external com- · Wide Input Voltage Range: 3V to 16V
ponents can be used. Specifically, 1mm tall 10µH · Low 200mV Feedback Voltage
inductor and 10µF output capacitor for the typical · Output Over Voltage Protection
application is sufficient.
· Cycle by Cycle Current Limit: 1.3A
The over output voltage protection is equipped in
AP3033, which protects the IC under open load condi-
tion. The AP3033 includes UVLO, soft-start, standby
High Frequency PWM Dimming
Built-in Thermal Shutdown Function
mode, current limit and OTSD to protect the circuit.
· Under Voltage Lockout
The AP3033 is available in standard TSOT-23-6 pack-
· 7' to 10' LCD Panels
· Digital Photo Frame
· GPS Receiver
Jan. 2010 Rev. 1. 0
Figure 1. Package Type of AP3033
BCD Semiconductor Manufacturing Limited