The SGM4546 is matched dual-channel high speed, high sound pressure level (SPL) piezo-sounder 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, SGM4546 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, boost DC/DC is integrated to provide high driven voltage. The tiny packages make the device very suitable for space limited applications.
The SGM4546 is available in Green TDFN-3×3-14L and TSSOP-16 (Exposed Pad) packages. It operates over an ambient temperature range of -40℃ to +85℃.
Integrated Boost DC/DC to Achieve 26V (MAX) Driven Voltage
2A Peak Driven Current to Drive Capacitive Loads
Power Supply Voltage Range: 1.8V to 5.5V
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 Green TSSOP-16 (Exposed Pad) and TDFN-3×3-14L Packages
Piezo-Sounder Driver
