Piezo speaker strobe notification reference design

TIDA-00374 uses Texas Instrument’s industrial piezo driver, flash LED driver, and the ultra-low-power FRAM microcontroller (MCU) to demonstrate the implementation of both audible and visual notification subsystems, primarily intended for fire alert end-equipment systems. The TI Design demonstrates multiple alert tone frequency outputs through a single piezo transducer, as well as a low input current, high light output LED strobe.

Features
Meets NFPA 72 Code requirements for audible and visual notification devices
86.5 dBA @ 3m (520 Hz Square Wave)
80.5 dBA @ 3m (2.84 kHz Sine Wave)
77.5 dBA @ 3m (Pre-Recorded Speech)
300 candela @ 3m (Flash Mode)
1.44 W power consumption (Audible & Visual Notification)

Parts Include:

CSD15571Q2  20-V N-Channel NexFET™ Power MOSFET 
DRV2700     High Voltage Driver with Integrated Boost Converter 
LM3550       A Flash LED Driver with Automatic Vf and ESR Detection for Mobile Camera Systems 
LMR14030    40V, 3.5A SIMPLE SWITCHER®, 2.2MHz Step-Down Regulator with 40uA IQ 
LMV344       Quad Rail-To-Rail Output CMOS Operational Amplifier with Shutdown 
MSP430FR5969   16 MHz Ultra-Low-Power Microcontroller featuring 64 KB FRAM, 2 KB SRAM, 40 IO 
TPD1E10B06  Single Channel ESD in 0402 package with 10pF Capacitance and 6V Breakdown 
TPD6F003     6-Channel EMI Filter for Display Interface 

Learn more by downloading the reference design below