GENERAL DEscriptION
The SGM4547 is matched dual-channel high speed piezo-sounder and ultra-sound transducer driver which is integrated boost DC/DC to achieve high driven voltage. The unique circuit design provides excellent performance for delivering 2A peak current to highly capacitive loads.
To reduce problems with time and clock skew, SGM4547 is a good choice, with matching delays and maintaining integrity of input to output pulse-widths. Matching rise/fall delay times improve the drive capability and speed. Non-overlapping drive technology is used to minimize the dynamic switching loss.
In order to get higher volume sound from piezo-sounder and ultra-sound transducer, boost DC/DC is integrated to provide high driven voltage. The tiny package makes the device very suitable for space limited applications.
The SGM4547 is available in a Green TDFN-3×3-14L package. It operates over an ambient temperature range of -40℃ to +85℃.
FEATURES
Integrated Boost DC/DC to Achieve 26V (MAX) Driven Voltage
2A Peak Driven Current to Drive Capacitive Loads
Wide Operating Voltage Range
High Speed Driver
Very Short Rise Time and Fall Time
Improved Response Times
Matched Rise Time and Fall Time
Independent Enable Control for Each Channel
Reduced Clock Skew between Dual Channels
Output is at Low under UVLO Protection, Enable Pin Floating or Disable Status
High Noise Immunity
Improved Clocking Rate
Low Supply Current and Output Impedance
-40℃ to +85℃ Operating Temperature Range
Available in a Green TDFN-3×3-14L Package
APPLICATIONS
Ultra-Sound Transducer Driver
Piezo-Sounder Driver