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