SMB122 Datasheet PDF - Summit Microelectronics

INTRODUCTION
The SMB122 is a highly integrated and flexible nine-channel power manager designed for use in a wide range of portable applications. 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 setpoint/margining
    o Sequencing & digital soft start
    o Enable/Disable outputs independently
    o Input/Output UV/OV voltage thresholds
    o PWM/PFM mode, switching frequency
• Eight programmable regulator channels with 1.5% accuracy
    o Three synchronous step-down (buck) with internal PFETs
    o One configurable step-up (boost) or synchronous step-down (buck)
    o Two step-up (boost)
    o One configurable step-up (boost) or inverting step-up/down (buck-boost)
    o One adjustable output voltage LDO
• Programmable Linear Li-Ion Battery Charger
    o Precharge/fast charge/termination current
    o Fast Charge voltage threshold
    o Float Voltage (<0.5% accuracy)
• +2.7V to +6.0V Input Range (Higher system voltages supported)
• Built-in current limiting, UV/OV, and thermal protection
• Highly accurate reference and output voltage (<1.5%)
• 500 to 1000kHz PWM frequency and automatic power-saving PFM mode
• 96 bytes of user configurable nonvolatile memory

APPLICATIONs
• Portable Media Players
• Digital camcorders/still cameras
• Smart PDA/Camera phones
• Handheld GPS/PDA’s
• TFT-LCD Displays/Monitors/TV’s