• 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

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℃.