Smart Buzzer NSP2340BA24E is an advanced voice chip specifically designed for piezoelectric buzzer applications, integrating flash memory and high-voltage buzzer driver in a single chip. With built-in innovative boost converter and Class AB amplifier, it can output up to 24V voltage to directly drive piezoelectric buzzers for voice or sound effects playback. Supporting ISP (In-System Programming) functionality for quick content updates and offering multiple communication interface options for seamless integration into various intelligent systems.

• Feature
  

  -High-voltage direct drive technology, no external boost circuit required

  -ISP in-system programming, supports rapid content updates

  -Adjustable gain control, flexible adjustment via external resistor

  -Complete protection and low power design, over-temperature/ over-current/ under-voltage protection, standby current ≤ 3μA

  -Industrial-grade operating temperature: -40°C to 85°C

  -Multiple communication interfaces: I²C/ UART/ Two-wire interface

• Specifications
  

  -Operating voltage: 2.0V to 5.5V

  -Package: TSSOP28

  -Voice Duration: Up to 340 seconds (NSP2340BA24E)

  -Boost Output: 10V/ 12V/ 18V/ 24V selectable

  -GPIO Count: 6

  -Standby Current: ≤ 3μA

  -Single-chip Integration: Integrates boost and driver circuits, reduces BOM cost

  -Multi-interface Support: Easy integration with various MCUs

  -Compliant with Environmental Standards: RoHS, TSCA, Halogen-free

• System Block Diagram