LP55271TL

The LP55271TL is a lighting management unit for handheld devices with I2C compatible control interface. It has a step-up DC/DC converter with high current output and it drives display and keypad backlights and powers the camera flash LED.

The features of LP55271TL can be summarized as:(1)High current boost DC-DC converter (up to 1A output current); (2)Programmable boost output voltage; (3)370 mA flash LED constant current driver with low tolerance and a safety circuit; (4)Synchronization pin for the flash timing; (5)Two single-ended audio inputs with gain control; (6)Four constant current 15 mA LED drivers with 8-bit programmable brightness control; (7)Audio synchronization feature; (8)I2C compatible control interface; (9)Built-in LED connectivity test to maximize manufacturing yield; (10)Small microSMD-30 package (2.5 mm x 3.0 mm x 0.6 mm).

The absolute maximum ratings of LP55271TL are:(1)Voltage on power pins (VDD1,2):-0.3V to +6.0V; (2)Voltage on analog pins:-0.3V to VDD1,2+0.3V with 6.0V max; (3)Voltage on input/output pins:-0.3V to VDD1,2+0.3V with 6.0V max; (4)V(all other pins): Voltage to GND..-0.3V to 6.0V; (5)I(VREF):10A; (6)I(FLASH):500 mA; (7)Continuous Power Dissipation:Internally Limited; (8)Junction Temperature (TJ-MAX):125°C; (9)Storage Temperature Range:-65°C to +150°C; (10)Maximum Lead Temperature(Reflow soldering, 3 times):260°C; (11)ESD Rating,Human Body Model:2 kV.

If you want to know more information such as the electrical characteristics about the LP55271TL, please download the datasheet in www.seekic.com or www.chinaicmart.com .