SUMMIT Microelectronics: Product Summary: SMB112

SUMMIT Microelectronics: Product Summary: SMB112

PRELIMINARY INFORMATION

PRELIMINARY INFORMATION

A complete index to all Product Summary pages

Download/view the SMB112 data sheet.

Download the GUI Programming Software SMB112.ZIP

Summit dongle information

Applications Note 61: Layout Guidelines for an SMB series Switching Regulator

Applications Note 58:SMB112 Five Channel Programmable DC-DC Power Manager Windows GUI Users Guide and Configuration Register Descriptions

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SMB112

FEATURES

Digital programming of all major parameters via I2C interface and non-volatile memory

- Output voltage set point

- Individual dimming

- Output power-up/down sequencing

- Digital soft-start and output slew rate

- Input/Battery voltage monitoring

- UV/OV monitoring of all outputs

- Enable/Disable outputs independently

Five output channels

- One synchronous step-down (buck) channels

- Two step-up (boost) channels

- One inverting (buck-boost) channel

- One fixed output +3.3V LDO

+2.7V to +6.0V Input Range

Highly accurate reference and output voltage (<0.5%) with Active DC Output Control (ADOC™) technology

Supports multiple strings of up to 12 white LEDs in series

Undervoltage Lockout (UVLO) with hysteresis

800 kHz operating frequency

96 bytes of user configurable nonvolatile memory

APPLICATIONS

White LED backlighting

High-power LED driving

TFT/LCD Displays/Monitors/TV's

Digital camcorders/still cameras

Portable DVD/MP3/GPS

Camera/smart phones

Mobile Computing/PDA's

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SMB112: Five-Channel Digitally Programmable White LED and TFT-LCD Power Manager

INTRODUCTION

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 multichannel 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" converter, two step-up "boost" converters, one inverting "buckboost" converter 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.

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Figure 1 - Applications schematic featuring the SMB112 Five-channel, programmable DC-DC controller. Note: This is an applications example only. Some pins, components and values are not shown.

ORDERING INFORMATION

NOTE 1 - This is a Preliminary Information data sheet that describes a Summit product currently in pre-production with limited characterization.

SUMMIT Microelectronics, Inc. reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. SUMMIT Microelectronics, Inc. assumes no responsibility for the use of any circuits described herein, conveys no license under any patent or other right, and makes no representation that the circuits are free of patent infringement. Charts and schedules contained herein reflect representative operating parameters, and may vary depending upon a user’s specific application. While the information in this publication has been carefully checked, SUMMIT Microelectronics, Inc. shall not be liable for any damages arising as a result of any error or omission.

SUMMIT Microelectronics, Inc. does not recommend the use of any of its products in life support or aviation applications where the failure or malfunction of the product can reasonably be expected to cause any failure of either system or to significantly affect their safety or effectiveness. Products are not authorized for use in such applications unless SUMMIT Microelectronics, Inc. receives written assurances, to its satisfaction, that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks; and (c) potential liability of SUMMIT Microelectronics, Inc. is adequately protected under the circumstances.

Revision 2.4 - This document supersedes all previous versions.

ADOC ™ is a registered trademarks of Summit Microelectronics Inc., I2C is a trademark of Philips Corporation.

Copyright©1999- Summit Microelectronics, Inc.