NJW1280RB2-TE1

Overview

The NJW1280RB2-TE1 is a high capacitance piezo-sounder driver featuring an internal three-times charge pump circuit. It provides differential outputs capable of driving up to 30Vpp from a single 5V supply, supporting piezo-sounders with approximately 30nF capacitance. The device operates within a voltage range of 2.0V to 5.5V and includes an input signal detection circuit for automatic shutdown, reducing current consumption to a maximum of 0.5μA in standby mode.

Feature Summary

• Built-in three-times charge pump circuit enables high-voltage differential output from low single-supply voltages.
• Input signal detection circuit automatically switches the device to a low-power shutdown mode when no signal is present.
• Integrated protection mechanisms include thermal shutdown, current limit, and low-PVDD detection circuits.

Applications

• Security alarm systems
• Fire alarm devices
• Smoke detectors

Procurement Notes

Verify that the specific ordering suffix TE1 corresponds to the MSOP10 (TVSP10) package variant as documented in the manufacturer's official datasheet. Confirm RoHS compliance and halogen-free status requirements against the specific revision of the component data sheet prior to finalizing procurement specifications.

Selection Notes

Select this component for applications requiring the drive of large-capacity piezo-sounders directly from coin or Li-ion batteries. Ensure the design accommodates the required external capacitors for the charge pump circuit and verify that the operating temperature range meets the environmental conditions of the target application.

Part Context

This part belongs to the NJW1280 series produced by Nisshinbo Micro Devices Inc., formerly New Japan Radio Co., Ltd. The series is designed specifically for driving piezoelectric sounders, utilizing advanced charge pump technology to achieve high output voltages efficiently within compact surface-mount packages.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer for potential cross-reference options if alternative sourcing is required.