SMB120

Nine-Channel DC/DC Digitally Programmable System Power Manager

 FEATURES

	Digital programming of all major parameters via I2C interface and non-volatile memory
	•	Output voltage setpoint
	•	Output power-up/down sequencing
	•	Digital soft-start and output slew rate
	•	Input/Battery voltage monitoring
	•	Dynamic Voltage Management
	•	UV/OV monitoring of all outputs
	•	Enable/Disable outputs independently
	Nine output channels
	•	Four synchronous step-down (buck) channels
	•	Three step-up (boost) channels
	•	One inverting (buck-boost) channel
	•	One 3.3V fixed LDO channel
	User friendly Graphical User Interface (GUI)
	2.7V-6.0V Input Range
	Highly accurate reference and output voltage (<0.5%) with Active DC Output Control (ADOC™) technology
	Undervoltage Lockout (UVLO) with hysteresis
	800 kHz operating frequency (trimmable)
	96 bytes of user configurable nonvolatile memory
	Eight Phase PWM with Phase Locked Loop (PLL)
	100% Maximum Duty Cycle for Buck channels
	0% Duty Cycle option for boost and buck-boost channels

 APPLICATIONS

	Digital camcorders/still cameras
	Portable DVD/MP3/GPS
	Camera phones
	TFT/LCD Displays/Monitors/TV's
	Mobile Computing
	Consumer battery-operated equipment
	Intel X-Scale™ -based consumer devices

 INTRODUCTION
The SMB120 is a highly integrated and flexible nine-channel programmable 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. Complete with a user friendly GUI, all programmable settings including output voltages and input/output voltage monitoring can be customized with ease.

The SMB120 integrates all the essential blocks required to implement a complete nine-channel power subsystem including four synchronous step-down "buck" controllers, three step-up "boost" controllers, one inverting "buck-boost" controller, and one linear regulator (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, dynamic voltage management and UV/OV/input monitoring on all channels.

The integration of features and built-in flexibility of the SMB120 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 SMB120 this facilitates rapid design cycles and proliferation from a base design to future generations of product.

The SMB120 is suited to battery-powered applications with an input range of 2.7V to 6.0V. Output voltages are extremely accurate (<0.5%) employing proprietary ADOC™ technology. Communication is via the industry standard I 2C bus. All user programmed settings are stored in non-volatile EEPROM of which 96 bytes may be used for general-purpose memory applications. The commercial operating temperature range is 0°C to +70°C and the industrial temperature range is - 40°C to +85°C The SMB120 is available in a lead-free, RoHS compliant 9mm x 9mm 64 pin QFN package.

ORDERING INFORMATION