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PDF ( 数据手册 , 数据表 ) SMB113

零件编号 SMB113
描述 Four Channel Programmable DC-DC System Power Manager
制造商 Summit
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SMB113 数据手册, 描述, 功能
SMB113
Four Channel Programmable DC-DC System Power Manager
Preliminary Information
FEATURES & APPLICATIONS
Digital programming of all major parameters via
I2C interface and non-volatile memory
o Output voltage set point
o Input/Battery voltage monitoring
o Output power-up/down sequencing
o Digital soft-start and output slew rate
o Output voltage margining
o UV/OV monitoring of all outputs
o Enable/Disable outputs
independently
User friendly Graphical User Interface (GUI)
Four synchronous step-down (buck) output
channels
+2.7V to +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
96 bytes of user configurable nonvolatile memory
Applications
Digital camcorders/still cameras
Portable DVD/MP3/GPS
Camera/smart phones
Mobile Computing/PDA’s
Consumer battery-operated equipment
SIMPLIFIED APPLICATIONS DRAWING
INTRODUCTION
The SMB113 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 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 SMB113 integrates all the essential blocks required to
implement a complete four-channel power subsystem
consisting of four synchronous step-down “buck” controllers.
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 SMB113
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
SMB113 this facilitates rapid design cycles and proliferation
from a base design to future generations of product.
The SMB113 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 user-
programmed 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.
+2.7V to +6.0V
or
Li-Ion
SMB113
I2C/SMBus
System
Control and
Monitoring
Enable Input
Power Good
4 Step-
Down
(Buck)
Channels
+0.8V to 0.9 x Vin (Prog.) @2A CPU Core
+0.8V to 0.9 x Vin (Prog.) @2A Memory, I/O
+0.8V to 0.9 x Vin (Prog.) @2A DSP/Codec
+0.8V to 0.9 x Vin (Prog.) @2A Analog/RF
Figure 1 – Applications schematic featuring the SMB113 four-channel, programmable DC-DC controller.
Note: This is an applications example only. Some pins, components and values are not shown.












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