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
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