SMB112

The SMB112 is a highly integrated and flexible five-channel power manager designed for powering TFT/LCD display panels and for driving low- and high-power white-LEDs. 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.

The SMB112 integrates all the essential blocks required to implement a complete five-channel power subsystem for TFT/LCD panels including a synchronous step-down "buck" controller, two step-up "boost" controllers, one inverting "buckboost" 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, individual dimming, 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 SMB112 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 SMB112 this facilitates rapid design cycles and proliferation from a base design to future generations of product.

The SMB112 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 I²C bus. All userprogrammed settings are stored in non-volatile EEPROM of which 96 bytes may be used for general-purpose memory applications. The operating temperature range is 0C to +70C  and the available package is a lead-free, Green, RoHS compliant, 32-pad QFN-32.