Press Release
California Micro Devices Launches Industry’s Smallest Flash
LED Driver for Mobile Handsets
PhotonIC®
CM9410 and CM9412 Offer Highly Efficient and High Performance
Drive Capabilities in Tiny Footprint
MILPITAS, Calif.,
-- Dec. 12, 2006 --
California Micro Devices (NASDAQ: CAMD) today unveiled
a new family of PhotonIC®
white LED drivers capable of supporting a wide range of high current
flash LEDs in today’s most advanced handsets. California Micro
Devices’ CM9410 and CM9412 feature current drive capabilities
of up to 1A, high efficiency and multiple operating modes that can be
programmed via a digital single wire control interface. The CM9410 is
offered in a 0.4mm pitch chip scale package (CSP), which results in
a solution form factor that is five times smaller than equivalent solutions.
The CM9412 is housed in a 3mm x 3mm TDFN (Thin DFN) package.
Evolving Application Requirements
As camera resolution increases and picture quality becomes a key criterion
for camera phone users, powerful camera flash capabilities are needed
to take full advantage of high resolution imagers. In addition, wireless
handset designers are facing major challenges in terms of power consumption,
battery life, space constraints and cost. Therefore, significant emphasis
needs to be put on optimizing the efficiency and footprint of the LED
subsystem, specifically for camera flash circuitry.
Key Features
The CM9410 and CM9412 support a voltage
input range of 3.0V to 5.5V and feature a typical efficiency of 85 percent.
They offer various modes of operation including shutdown, torch and
two flash modes that can be selected through a user friendly single
wire interface. Preview and flash currents can be programmed independently
via external resistors. Timeout setting is also programmable for flash
modes. Both products offer a drive capability of up to 1A to support
a powerful flash with high resolution camera sensors. The typical switching
frequency is 1MHz and typical shutdown current is less than 0.3uA. These
products also feature overcurrent and overvoltage protection as well
as undervoltage lockout and a soft start to limit inrush current.
Application
Both products address the requirement for high drive capability for
camera flash applications. The following two figures show application
diagrams for the CM9410 and CM9412 respectively. Four modes selectable
via SWC (Single Wire Interface) are available, including shutdown, torch
(preview), Flash1 and Flash2. The following table describes the current
for each state:
| EN State | CM9410 Current | CM9412 Current |
| Shutdown | 0 |
0 |
| Preview (Torch) | 12% of Flash2 |
Current set by Rpr |
| Flash1 | 70% of Flash2 |
70% of Flash2 |
| Flash2 | Current set by Rfl |
Current set by Rfl |
Pricing and Availability
Evaluation boards and chip samples of the CM9410 and CM9412 are available
now. Chip pricing starts at $1.00 in 1,000 unit quantities. Volume production
is scheduled for Q1 2007.
About California Micro Devices Corporation
California Micro Devices Corporation is a leading
supplier of application specific analog and mixed signal semiconductor
products for the mobile handset, digital consumer electronics and personal
computer markets. Key products include Application Specific Integrated
Passive™ protection devices for mobile handsets, digital
consumer electronics products such as digital TVs and personal computers
as well as analog and mixed signal ICs for mobile handset displays.
Detailed corporate and product information may be accessed at www.cmd.com.
PhotonIC® is a registered trademark of California Micro Devices Corporation. Application Specific Integrated Passive™ and FlexBoost™ are trademarks of California Micro Devices. All other trademarks are property of their respective owner.
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