MAX1582Y - Maxim Integrated

MAX1582Y High-Efficiency / 26V Step-Up Converter

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) converte.

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 Analog DAC Controlled Direct-Digital PWM (No RC Required) from 200Hz to 200kHz ♦ Overvoltage Protection to Eliminate Zener Diode ♦ Constant 1MHz PWM Operation ♦ Low-Profile Inductor and Capacitors ♦ Soft-Start Eliminates Inrush Current ♦ 2.6V to 5.5V Input ♦ 0.01µA (typ) Shutdown Current ♦ Tiny UCSP (2.1mm ✕ 2.1mm ✕ 0.61mm) and Thin QFN (4mm ✕ 4mm) Packages Ordering Information.