NJW1280MG2-TE1

Overview

The NJW1280MG2-TE1 is a high capacitance piezo-sounder driver featuring an internal three-times charge pump circuit. It operates on a single supply voltage ranging from 2.0V to 5.5V, enabling differential output voltages up to 30Vpp at 5V and 18Vpp at 3V. The device supports driving large-capacity loads of up to 30nF with only four external capacitors. It includes an input signal detection circuit for automatic shutdown, reducing current consumption to a maximum of 0.5μA in standby. The component is housed in a compact EQFN16-G2 package.

Feature Summary

• Integrates a 3x charge pump circuit to generate high drive voltage from low supply rails
• Features automatic input signal detection that switches the device to ultra-low power shutdown mode when idle
• Includes built-in thermal shutdown, current limit, and low-PVDD detection circuits for system protection

Applications

• Security alarm systems
• Fire alarm devices
• Smoke detectors

Procurement Notes

Verify the specific ordering suffix TE1 corresponds to the required taping form and terminal finish (Sn2Bi) as listed in the manufacturer's ordering information. Confirm the package outline matches the EQFN16-G2 specification. Ensure the design accounts for the minimum order quantity requirements associated with this specific reel configuration.

Selection Notes

Select this component for applications requiring high sound pressure levels from coin or Li-ion batteries. The integrated charge pump eliminates the need for external boost converters. Verify that the external flying and store capacitors meet the voltage ratings specified in the application notes to ensure stable operation across the full temperature range.

Part Context

This part belongs to the NJW1280 series of piezo-sounder drivers manufactured by Nisshinbo Micro Devices. The MG2 suffix indicates the EQFN16-G2 leadless package variant, distinct from the MSOP10 version. The series is designed specifically for battery-operated warning devices where space constraints and low standby current are critical design parameters.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.