MAX1554ETA

The MAX1554ETA is high-efficiency step-up converter, which drive white LEDs in series with a constant current to provide efficient display backlighting in cellular phones, PDAs, and other hand-held devices. The step-up converter includes an internal 40V, low RDSON, N-channel MOSFET switch for high efficiency and maximum battery life.

The features of MAX1554ETA can be summarized as:(1)Constant-Current Regulation for Even LED Illumination; (2)Internal 40V MOSFET Switch Capable of Driving 10 LEDs; (3)Small, Low-Profile External Components; (4)2.7V to 5.5V Input Range; (5)Up to 88% Efficiency Driving 6 LEDs; (6)Up to 82% Efficiency Driving 9 LEDs (20mA, VCC= 3.6V); (7)Analog or PWM Control of LED Intensity; (8)Optimized for Low Input Ripple; (9)Soft-Start to Minimize Inrush Current; (10)3mm x 3mm 8-Pin TDFN Package.

The absolute maximum ratings of MAX1554ETA are:(1)VCC, FB, OV to GND:-0.3V to +6.0V; (2)LX to GND:-0.3V to +45V; (3)EN, BRT, SS to GND:-0.3V to (VCC + 0.3V); (4)ILX:0.9ARMS; (5)Continuous Power Dissipation (TA = +70°C), 8-Pin 3mm x 3mm TDFN (derate 24.4mW/°C above +70°C):1951mW; (6)Operating Temperature Range:-40°C to +85°C; (7)Junction Temperature:+150°C; (9)Storage Temperature Range:-65°C to +150°C; (10)Lead Temperature (soldering, 10s):+300°C.

If you want to know more information such as the electrical characteristics about the MAX1554ETA, please download the datasheet in www.seekic.com or www.chinaicmart.com .