AP3068 Datasheet, PDF (1/15 Pages) BCD Semiconductor Manufacturing Limited – WHITE LED DRIVER FOR LCD PANEL BACKLIGHT

Preliminary Datasheet
WHITE LED DRIVER FOR LCD PANEL BACKLIGHT
AP3068
General Description
The AP3068 is a white LED (WLED) driver with
current balancing and dimming functions. It consists
of a boost controller and 8-channel current sinks to
drive WLED arrays with constant current from a
wide power supply range. It can be used in middle
and large-sized LCD panel backlight.
The full-scale LED current can be adjusted from
5mA to 100mA simply via a resistor. The 8 channels
can be paralleled for higher current application. The
AP3068 can support direct PWM dimming.
The AP3068 features LED open/short protection,
Under Voltage Lockout (UVLO) protection, over
output voltage protection and Over Temperature
Protection (OTP).
The AP3068 is available in TSSOP-281(EDP)
package.
Features
• Input Voltage Range: 6V to 27V
• Maximum Duty Cycle: 93%
• Maximum Channel Current: 100mA
• Current Matching Accuracy: ±1.5%
• Adjustable Operating Frequency: 200kHz to
• 1MHz
• Cycle-by-cycle Current Limit
• Unused LED Channel Auto-detection
• Open/Short LED Protection
• Programmable Soft-start
• Programmable UVLO Protection
• Programmable OVP
• Over Temperature Protection
• FBX and SDBX Pins Enable Parallel
• Application with AP3608E
Applications
• LCD Monitor
• LCD Display Module
• LCD TV
TSSOP-28 (EDP)
Figure 1. Package Type of AP3068
May. 2010 Rev. 1.3
BCD Semiconductor Manufacturing Limited
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