MAX8834Y

19-4421; Rev 0; 4/09 www.DataSheet4U.com KIT ATION EVALU LE B A IL A AV Adaptive Step-Up Converters with 1.5A Flash Driver General Description Features ♦ 2.5V to 5.5V Operation Range ♦ Step-Up DC-DC Converter 1.5A Guaranteed Output Current Adaptive or I2C Programmable Output Voltage 2MHz and 4MHz Switching Frequency Options ♦ Two Flash/Movie LED Current Regulators I2C Programmable Flash and Movie Current Low-Dropout Voltage (110mV max) at 500mA ♦ LED Indicator Current Regulator I2C Programmable Output Current Ramp and Blink Timers for Indicator Mode Low-Dropout Voltage (130mV max) at 16mA ♦ I2C Programmable Safety and Watchdog Timers ♦ GSM Blank Logic Input ♦ MAXFLASH System Lockup Protection ♦ Remote Temperature Sensor Input ♦ Open/Short LED Detection ♦ Thermal Shutdown Protection ♦ < 1µA Shutdown Current ♦ 20-Bump, 0.5mm Pitch, 2.5mm x 2.0mm WLP MAX8834Y/MAX8834Z The MAX8834Y/MAX8834Z flash drivers integrate a 1.5A PWM DC-DC step-up converter and three programmable low-side, low-dropout LED current regulators. The step-up converter features an internal switching MOSFET and synchronous rectifier to improve efficiency and minimize external component count. An I2C interface provides flexible control of stepup converter output voltage setting, movie/flash mode selection, flash timer duration settings, and current regulator settings. The MAX8834Y/MAX8834Z operate down to 2.5V, making them future proof for new battery technologies. The MAX8834Y/MAX8834Z consist of two current...