SUMMIT Microelectronics: Product Summary: SMB111

SUMMIT Microelectronics: Product Summary: SMB111

PRELIMINARY INFORMATION

PRELIMINARY INFORMATION

A complete index to all Product Summary pages

Download/view the SMB111 data sheet

Download the GUI Programming Software SMB111.ZIP

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

Read our press release regarding this products.

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FEATURES

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

- Output voltage set point

- Output power-up/down sequencing

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Digital soft-start and output slew rate

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Input/Battery voltage monitoring

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UV/OV monitoring of all outputs

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Enable/Disable outputs independently

Four output channels

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Three synchronous step-down (buck) channels

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One step-up (boost) channel

User friendly Graphical User Interface (GUI)

+2.7V to +6.0V Input Range

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

Undervoltage Lockout (UVLO) with hysteresis

800 kHz operating frequency

Four Phase PWM with Phase Locked Loop (PLL)

100% Maximum Duty Cycle for Buck channels

0% Duty Cycle option for boost controller

96 bytes of user configurable nonvolatile memory

APPLICATIONS

Digital camcorders/still cameras

Portable DVD/MP3/GPS

Camera/smart phones

TFT Displays/Monitors/TV's

Mobile Computing/PDA's

Consumer battery-operated equipment

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SMB111- Four Channel Programmable DC-DC System Power Manager

INTRODUCTION

The SMB111 is a highly integrated and flexible four-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 SMB111 integrates all the essential blocks required to implement a complete four-channel power subsystem including three synchronous step-down “buck” controllers and one stepup “boost” controller. 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 SMB111 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 SMB111 this facilitates rapid design cycles and proliferation from a base design to future generations of product.

The SMB111 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 ADOCTM technology. Communication is via the industry standard I 2C bus. All userprogrammed 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 range is -40°C to 85°C. The available package is a lead-free, RoHS compliant, 5x5 32-pin QFN.

Figure 1 - Applications schematic featuring the SMB111 four-channel, programmable DC/DC controller. Note: This is an applications example only. Some pins, components and values are not shown.

SMB111 Block Diagram

SMB111 Pin Description

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 trademark of Summit Microelectronics, Inc.
I²C is a trademark of Philips Corporation.