LC410592

Current Regulated White LED driver with Brightness Control (for Dual-Display systems)

Features

• Low noise, high efficiency CMOS charge pump
• Built-in constant current circuit
• 2.7V to 5.5V input voltage
• Drives up to seven white LEDs with maximum total current 140mA
• Self-changing of High-Efficiency charge pump mode (1x/-0.5x mode)
• Typical +-1% current matching of any two LED outputs
• Charge pump frequency 500kHz
• Brightness controlled by PWM pulse (Group A and Group B are individually controllable, respectively.)
• Maximum 1uA shutdown current
• The LC410592 is available in a VQFN20

Applications

• White LED display backlights
• LED keypad backlights
• 1-Cell Li-Ion battery-operated equipment including PDAs, hand-held PCs, cellular phones
• Flat panel displays

DATASHEET

LC410592.pdf