SMB113A/B/SMB117/A
Preliminary Information
High-power, Four-channel Programmable DC-DC System Power Managers
FEATURES & APPLICATIONS
INTRODUCTION
• Digital programming of all major parameters via
The SMB113A/B and SMB117/A are highly integrated and
flexible four-channel power managers designed for use in a
wide range of 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 set-top boxes. Complete with a user friendly
GUI, all programmable settings, including output voltages and
input/output voltage monitoring, can be customized with ease.
I2C interface and non-volatile memory
•
•
•
•
•
•
•
Output voltage set point
Input/battery voltage monitoring
Output power-up/down sequencing
Digital soft-start and output slew rate
Dynamic voltage control of all outputs
UV/OV monitoring of all outputs
Enable/Disable outputs independently
The SMB113A/B and SMB117/A integrate 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, dynamic voltage
management and UV/OV monitoring on all channels.
• User friendly Graphical User Interface (GUI)
• Four synchronous step-down output channels
• Integrated RESET monitor
• +2.7V to +6.0V Input Range
• Highly accurate output voltage: <1.5%
• Factory programmable dead times
The integration of features and built-in flexibility of the
SMB113A/B and SMB117/A 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 SMB113A/B and SMB117/A, this
facilitates rapid design cycles and proliferation from a base
design to future product generations.
• 0% to 100% Duty Cycle operation
• Undervoltage Lockout (UVLO) with hysteresis
• 250kHz (SMB117A), 400kHz (SMB117), 800kHz
(SMB113A), 1MHz (SMB113B) operating frequency
• 96 bytes of user configurable nonvolatile memory
The SMB113A/B and SMB117/A are suited to a wide variety of
applications with an input range of +2.7V to +6.0V. Higher
input voltage operation can easily be implemented with a small
Applications
• Car & Marine Navigation Systems
• Set-top Boxes
number of external components.
Output voltages are
extremely accurate (<1.5%). Communication is accomplished
via the industry standard I2C bus. All user-programmed
settings are stored in non-volatile EEPROM of which 96 bytes
may be used as general-purpose memory. The devices are
offered in both the commercial and the industrial operating
temperature range. The package type is a lead-free, RoHS
compliant, 5x5 QFN-32.
• TVs
• DDR Memory
• Mobile Computing/PDAs
• Office Equipment
• DMB Systems
SIMPLIFIED APPLICATIONS DRAWING
+2.7V to +6.0V
+2.7V to +6.0V
SMB113A/B
SMB117/A
or
Li-Ion
or
Li-Ion
+0.5V to Vin (Prog.) @ 1.5A/5A
+0.5V to Vin (Prog.) @ 5A/10A
CPU Core
CPU Core
I2C/SMBus
I2C/SMBus
System
System
Control
and
+0.5V to Vin (Prog.) @ 1.5A/5A
+0.5V to Vin (Prog.) @ 1.5A/5A
+0.5V to Vin (Prog.) @ 1.5A/5A
+0.5V to Vin (Prog.) @ 5A/10A
+0.5V to Vin (Prog.) @ 5A/10A
+0.5V to Vin (Prog.) @ 5A/10A
Control
and
Monitoring
4 Step-
Down
(Buck)
Memory, I/O
DSP/Codec
Analog/RF
4 Step-
Down
(Buck)
Memory, I/O
DSP/Codec
Analog/RF
Enable Input
Enable Input
Reset Input
Monitoring
Reset Input
Channels
Channels
RESET
Monitor
RESET Output
(Power Good)
RESET
Monitor
RESET Output
(Power Good)
Figure 1 – Applications schematic featuring the SMB113A/B/117/A programmable DC-DC controllers.
Note: This is an applications example only. Some pins, components and values are not shown.
© SUMMIT Microelectronics, Inc. 2007
757 N. Mary Avenue • Sunnyvale CA 94085
http://www.summitmicro.com/
2111 2.6 9/16/2010
Phone 408 523-1000 • FAX 408 523-1266
1
5秒后页面跳转
AO3401场效应管参数、引脚图、应用原理图
BT131可控硅参数及引脚图、工作原理详解
74LS32芯片参数、引脚图及功能真值表
全球首块英伟达H200交付 黄仁勋“送货上门”
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
