Self-Excitation Piezo Sounder Driver from Diodes Incorporated Extends Runtime and Maintains High SPL Output Across Entire Battery Life
March 14 2023 - 10:14AM
Business Wire
Diodes Incorporated (Diodes) (Nasdaq: DIOD) is introducing a new
driver IC to address the need for increased output from
piezoelectric sounders. Featuring an integrated synchronous boost
converter, the DIODES PAM8906 enables higher sound pressure levels
(SPL), allowing sound to be carried over larger distances. This
driver also integrates functionality that prolongs its
battery-powered operation. Key applications for the device include
smoke/gas/water alarms, air humidifiers, handheld GPS devices,
industrial security alarms, medical devices, and home
appliances.
The PAM8906 operates with either external pulse-width modulation
(PWM) input or in self-excitation mode, whereas other solutions
will generally only support one or the other. This provides greater
application flexibility and allows support for an increased variety
of sounders.
Its boost converter, using a small 0.47µH inductor, switches at
a fixed 1.8MHz frequency. This presents engineers with a solution
that takes up significantly less board space and has a reduced bill
of materials (BOM). It has a low quiescent current (<1µA), and
an automatic shutdown/wake-up that helps extend operational
lifespan in battery-powered applications.
The PAM8906 has three output voltage variants: 20VPP, 24VPP, and
36VPP. This enables the creation of different output versions of
the same system. Unlike charge pump-based alternatives, this device
maintains its output even as battery voltage drops over time.
The PAM8906 sounder driver from Diodes is supplied in a 10-pin
MSOP package and is available at $0.37 each in 1,000 piece
quantities.
About Diodes Incorporated
Diodes Incorporated (Nasdaq: DIOD), a Standard and Poor’s
SmallCap 600 and Russell 3000 Index company, delivers high-quality
semiconductor products to the world’s leading companies in the
automotive, industrial, computing, consumer electronics, and
communications markets. We leverage our expanded product portfolio
of discrete, analog, and mixed-signal products and leading-edge
packaging technology to meet customers’ needs. Our broad range of
application-specific solutions and solutions-focused sales, coupled
with worldwide operations of 32 sites, including engineering,
testing, manufacturing, and customer service, enables us to be a
premier provider for high-volume, high-growth markets. For more
information visit www.diodes.com.
The Diodes logo is a registered trademark of Diodes Incorporated
in the United States and other countries.
All other trademarks are the property of their respective
owners.
© 2023 Diodes Incorporated. All Rights Reserved
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Investor Relations Contact: Shelton Group Leanne K.
Sievers President P: 949-224-3874 E: lsievers@sheltongroup.com
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