MAX1582Y Description
The MAX1582/MAX1582Y drive up to six white LEDs in series with a constant current to provide display backlighting for two (main and sub-) displays in cell phones and other handheld devices. This configuration eliminates the need for ballast resistors and expensive factory calibration. The proprietary dual-output, step-up pulse-width modulation (PWM) converter includes a low RDSON n-channel MOSFET switch for high...
MAX1582Y Key Features
- Accurate Current Regulation for Uniform Illumination
- Lights Up Two LED Sections for Main and Subdisplays
- Up to 84% Efficiency
- Internal High-Power, 30V MOSFET
- Low 15mVP-P Input Ripple
- Flexible Dimming Control
- Overvoltage Protection to Eliminate Zener Diode
- Constant 1MHz PWM Operation
- Low-Profile Inductor and Capacitors
- Soft-Start Eliminates Inrush Current