MAX8834Y

• 2.5V to 5.5V Operation Range
• Step-Up DC-DC Converter
  • 1.5A Guaranteed Output Current
  • Adaptive or I²C-Programmable Output Voltage (3.7V to 5.2V in 16 Steps)
  • Over 90% Efficiency
  • On-Chip Power MOSFET and Synchronous Rectifier
  • Fixed 2MHz and 4MHz PWM Switching-Frequency Option
  • Small 1µH to 4.7µH Inductor
• Two Flash/Movie LED Current Regulators
  • I²C-Programmable Flash Output Current (22.44mA to 750mA in 32 Steps)
  • I²C-Programmable Movie Output Current (15.6mA to 125mA in 8 Steps)
  • Low-Dropout Voltage (100mV typ) at 500mA
• LED Indicator Current Regulator
  • I²C-Programmable Output Current (0.5mA to 16mA in 32 Steps)
  • Ramp and Blink Timers for Indicator Mode
  • Low-Dropout Voltage (75mV typ) at 16mA
• I²C and/or LED_EN ON/OFF Control for LED Current Regulators
• I²C-Programmable Flash Safety Timer (50ms to 800ms in 50ms Steps)
• I²C-Programmable Watchdog Timer (4s to 16s in 4 Steps)
• MAXQ2000 Command Module for the I²C Control
• GSM Blank Logic Input Reduces Peak Battery Current
• Low-Battery Detection (MAXFLASH)
• Remote Temperature Sensor Input Prevents Finger Burn or Fire
• Open/Short LED Detection
• Thermal-Shutdown Protection
• < 1µA Shutdown Current
• Tiny External Components
• 20-Bump, 0.5mm Pitch, 2.5mm x 2mm WLP Package
• Lead(Pb)-Free and RoHS Compliant
• Fully Assembled and Tested

The MAX8834Y evaluation kit (EV kit) is a fully assembled and tested PCB that demonstrates the highly integrated MAX8834Y adaptive step-up converter with 1.5A flash driver. The MAX8834Y flash driver integrates an adaptive 1.5A PWM step-up DC-DC converter, two 750mA white LED camera flash/movie current regulators, and a 16mA indicator LED current regulator. The EV kit includes a MAXQ2000 microcontroller command module that provides the I²C interface to control individual output on/off, the step-up output voltage, movie/flash current, and flash timer duration settings.

The MAX8834Y evaluation software can be downloaded from www.maximintegrated.com/evkitsoftware. The MAX8834Y EV kit can also evaluate the MAX8834Z. To evaluate the MAX8834Z, order a free sample along with the MAX8834Y EV kit.

Applications

• Cell Phones and Smart Phones
• PDAs, Digital Cameras, and Camcorders