SMB110

SMB110 Preliminary Information Five Channel Programmable DC-DC System Power Manager FEATURES & APPLICATIONS • Digital programming of all major parameters via I2C interface and non-volatile memory o Output voltage set point o Output power-up/down sequencing o Input/Battery voltage monitoring o Digital soft-start and output slew rate o Output voltage margining o UV/OV monitoring of all outputs o Enable/Disable outputs independently • Five output channels o Two synchronous step-down (buck) channels o One step-up (boost) channel o One inverting (buck-boost) channel o One fixed output +3.3V LDO INTRODUCTION The SMB110 is a highly integrated and flexible five-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 multichannel power supply application from digital camcorders to mobile phones. Complete with a user friendly GUI, all programmable settings including output voltages and input/output voltage monitoring can be customized with ease. The SMB110 integrates all the essential blocks required to implement a complete five-channel power subsystem including two synchronous step-down “buck” controllers, one step-up “boost” controller, one inverting “buck-boost” controller and one fixed output +3.3V LDO. Additionally sophisticated power control/monitoring functions required by complex systems are built-in. These include digitally programmable output voltage set point, power-up/down sequencing, enable/disable, margining and UV/OV/input/output monitoring on all channels. The integration of features and built-in flexibility of the SMB110 allows the system designer to create a “platform solution” that can be easily modified via software without major hardware changes. Combined with the re-programmability of the SMB110 this facilitates rapid design cycles and proliferation from a base design to future generations of product. The SMB110 is suited to battery-powered applications with an input range of +2.7V to +6.0V. Output voltages are extremely accurate (