SMB112 数据手册 ( 数据表 ) - Summit Microelectronics

INTRODUCTION
The SMB112 is a highly integrated and flexible five-channel power manager designed for powering TFT/LCD display panels and for driving low- and high-power white-LEDs. The built-in digital programmability allows system designers to custom tailor the device to suit almost any multi-channel power supply application from digital camcorders to mobile phones.

FEATURES & APPLICATIONS
• Digital programming of all major parameters via I2C interface and non-volatile memory
  o Output voltage set-point
  o Individual dimming
  o Output power-up/down sequencing
  o Digital soft-start and output slew rate
  o Input/Battery voltage monitoring
  o UV/OV monitoring of all outputs
  o Enable/Disable outputs independently
• Five output channels
  o One synchronous step-down (buck) channel
  o Two step-up (boost) channels
  o One inverting (buck-boost) channel
 o One fixed output +3.3V LDO
• +2.7V to +6.0V Input Range
• Highly accurate reference and output voltage (<0.5%) with Active DC Output Control (ADOC™) technology
• Supports multiple strings of up to 12 white LEDs in series
• Undervoltage Lockout (UVLO) with hysteresis
• 800 kHz operating frequency
• 96 bytes of user configurable nonvolatile memory

APPLICATIONs
• White LED backlighting
• High-power LED driving
• TFT/LCD Displays/Monitors/TV’s
• Digital camcorders/still cameras
• Portable DVD/MP3/GPS
• Camera/smart phones
• Mobile Computing/PDA’s