|
|
San
Jose, Calif. - January 05, 2006
- Summit
Microelectronics has
announced the newest addition to
the company's second generation
of multi-output Programmable
Power Manager ICs. As a true
"one-chip solution" the
SMB118
integrates six precision
programmable regulators and
programmable battery charging to
reduce system size and cost in
portable consumer electronics.
Like the previously announced
SMB122,
the SMB118 combines analog power
regulation and programmable
digital power management,
providing design flexibility for
parametric adjustment and
functional configuration.
Summit's easy-to-use PC-based
graphical (GUI) development
environment allows system
designers to digitally program
the entire multiple output power
supply and associated power
management functions with a few
clicks of a mouse. In high-volume
production Summit provides
product that is pre-programmed
with the customer's "custom
configuration" at no extra cost.
Compared to inflexible
conventional analog power ICs,
the SMB118 yields optimized power
system designs in significantly
less development time.
Features
The SMB118 incorporates three
synchronous step-down converters,
one step-up converter, one
configurable step-up or step-down
converter, and one low-dropout
(LDO) linear regulator. Also
included is a fully programmable
battery charger for single-cell
Li-Ion and Li-Polymer cells. All
charging parameters are
configurable, enabling the
utilization of a wide variety of
battery packs without hardware
changes.
The SMB118 offers an output
voltage accuracy of +/- 1.5% for
all DC-DC outputs and a float
voltage accuracy of +/- 1.0% for
the battery charger. DC-DC Power
conversion efficiency of up to
95% reduces thermal dissipation
and improves battery life in
portable systems. Further
enhancing battery life, a
shutdown mode reduces current
consumption to 0.1uA while
automatic PWM/PFM operation
improves light load efficiency.
For noise-sensitive
radio-frequency (RF) or audio
applications the SMB118's
oscillator frequency is
selectable between 500kHz and
1MHz in 250kHz steps and
fixed-frequency PWM override
inhibits PFM mode. Short circuit
current limiting and thermal
protection safety circuits are
also built-in to enhance
reliability.
The SMB118 operates directly from
+2.7V to +6.0V input making it
ideally suited for 1-cell Li-Ion
or Li-Polymer (+3.0V to +4.2V)
battery applications, though
line-powered applications are
easily supported as well. Higher
input voltages (2-cell Li-Ion,
+12V, etc.) can be accommodated
in many cases with simple
applications configuration.
Programmability
The SMB118 provides Digital Power
Management via an I2C interface
and non-volatile memory allowing
the user to configure power
functions and parameters for each
channel: individual channel
enabling/disabling, power-up/down
sequencing, power-up slew rate
control, static and dynamic
output voltage control (Dynamic
Voltage Management). A broad
range of intelligent power system
diagnostics and monitoring
functions are also provided,
which can be easily accessed via
the I2C serial interface. These
include input and output
monitoring for
under/over-voltage/over-current
(UV/OV/OC), integrated RESET
control, low/missing battery
detection and AC/DC battery
detection.
"The SMB118 Programmable Power
Manager further extends Summit's
leadership in programmable power
management, providing an ideal
solution for applications that
require both high-performance
power regulation and
sophisticated digital power
control," stated Abid Hussain,
Summit director of marketing.
"The integration of regulators
and programmable battery charging
in a space-saving 7mm x 7mm QFN
package makes the SMB118 a
complete, one-chip, solution for
today's feature-packed,
space-constrained designs. "
Applications
The SMB118 is well suited for
powering components commonly
found in digital consumer
electronics such as digital still
cameras/camcorders (DSC/DCC),
portable MP3/MEPG4 players, GPS
terminals, personal digital
assistants (PDAs), as well as the
next generation of "smart" mobile
phones. The Dynamic Voltage
Management feature is
particularly useful in
Xscale™ and ARM™ CPU
applications and where LED
backlight brightness control is
desired.
The SMB118 has an operating
temperature range of +0°C to
+70°C or -40°C to
+85°C and is available in
the 7mm x 7mm 48-pad QFN package
that is lead-free and
RoHS-standard compliant.
Price and Availability
Available now in production
quantities, the device is priced
at $4.89 each in quantities of
10,000 units.
The URL for this product is
http://www.summitmicro.com/prod_select/summary/SMB118/SMB118.htm
Design Software and Programmer
for Prototype Development
To speed user product
development, Summit offers
customers the SMB118EV companion
evaluation board and a graphical
user interface (GUI) software so
designers can quickly see the
features and benefits and design
a prototype power supply with the
SMB118. This is a complete
development tool that lets
designers easily manipulate the
characteristics of their systems.
The SMB118EV design kit includes
menu-driven Microsoft
Windows® graphic user
interface (GUI) software to
automate programming tasks and
also includes all necessary
hardware to interface to the
parallel or USB port of a laptop
or PC.
Once a user completes design and
prototyping, the SMB118EV
automatically generates a HEX
data file that can be transmitted
to Summit for review and
approval. Summit then assigns a
unique customer identification
code to the HEX file and programs
the customer's production devices
prior to final electrical test
operations. This ensures that the
device will operate properly in
the end application. The design
kit software can be downloaded
today from Summit's website
(www.summitmicro.com).
|
|
|
About
Summit Microelectronics --
"Programmable power for a
digital world".
Summit Microelectronics is the
leader in flexible,
multiple-output power management
solutions, for the consumer,
communications and computing
markets, integrating precision
power regulation with
sophisticated digital control in
a single chip.
Summit's unique programmable,
non-volatile mixed-signal IC
technology combined with a
convenient graphical (GUI)
development environment allows
for unparalleled functional and
parametric flexibility in power
supply design. This flexibility
applied to common problems such
as dynamic voltage/current
control and intelligent battery
charging, allows for significant
system performance improvement
while realizing drastic
reductions in design effort
&endash; i.e. entire multi-output
power supplies designed via
GUI.
Digital programmability enables
high integration and system
flexibility in a single chip -
impossible with conventional
"hard-wired" analog power IC's.
Additionally, this integration
reduces the bill-of-materials
(BOM) yielding the lowest total
system cost and size. Summit
solutions address the biggest
challenges facing OEM developers
today; Increasing system
functionality, performance and
complexity accompanied by
shrinking development time
cycles.
|
