LM3503

The LM3503 is a white LED driver for lighting applications. The device contains two internal white LED current bypass FET (Field Effect Transistor) switches. It offers superior performance over other step-up white LED drivers.

The features of LM3503 can be summarized as:(1)Drives up to 4, 6, 8 or 10 White LEDs for Dual Display Backlighting; (2)>80% Peak Efficiency; (3)Output Voltage Protection Options: 16V, 25V, 35V & 44V; (4)Input Under-Voltage Protection; (5)Internal Soft Start Eliminates Inrush Current; (6)1 MHz Constant Switching Frequency; (7)Analog Brightness Control; (8)Wide Input Voltage Range: 2.5V to 5.5V; (9)Low Profile Packages: <1 mm Height,10 Bump MicroSMD,16 Pin LLP.

The absolute maximum ratings of LM3503 are:(1)VIN Pin:-0.3V to +5.5V; (2)Sw Pin:-0.3V to +48V; (3)Fb Pin:-0.3V to +5.5V; (4)Cntrl Pin:-0.3V to +5.5V; (5)VOUT1Pin:-0.3V to +48V; (6)VOUT2 Pin:-0.3V to VOUT1; (7)En1:-0.3V to +5.5V; (8)En2:-0.3V to +5.5V; (9)Continuous Power Dissipation:Internally Limited; (10)Maximum Junction Temperature (TJ-MAX):+150°C; (11)Storage Temperature Range:-65°C to +150°C; (12)ESD Rating:Human Body Model..2kV,Machine Model..200V.

If you want to know more information such as the electrical characteristics about the LM3503, please download the datasheet in www.seekic.com or www.chinaicmart.com .