NJU7089R-TE2

Overview

The NJU7089R-TE2 is a Class-AB mono audio power amplifier manufactured by Nisshinbo Micro Devices. It operates on a single supply voltage ranging from 1.8 V to 5.5 V and delivers up to 1.2 W of output power into an 8 Ω load at 5 V with 1% THD. The device utilizes CMOS technology and features differential outputs, eliminating the need for external coupling capacitors. Key electrical parameters include a typical operating current of 3.0 mA at 5 V and a shutdown current below 2 µA. It incorporates thermal shutdown, over-current protection, and pop noise suppression circuits.

Feature Summary

• Bridge-tied-load (BTL) architecture providing differential outputs without requiring external coupling capacitors
• Integrated anti-pop circuitry that minimizes audible noise during shutdown mode transitions
• Built-in thermal shutdown and over-current protection circuits for enhanced reliability
• Shutdown pin functionality that significantly reduces supply current when inactive

Applications

• Telephone applications requiring high-power audio amplification
• Driving speakers with 8 Ω impedance in portable devices
• Low-voltage consumer electronics powered by single supply rails

Procurement Notes

Verify the specific package variant matches the required PCB footprint, as the NJU7089 family includes multiple outline options such as VSP8, SSOP20-C3, ESON8-V1, and HTSSOP24-P1. Confirm that the ordering suffix corresponds to the desired termination style and reel specifications. Ensure compatibility with the intended operating temperature range of -40°C to +85°C for the final assembly environment.

Selection Notes

Select this component for designs requiring a single-supply BTL amplifier with minimal external passive components due to its capacitor-less output configuration. Consider the trade-off between turn-on time and pop noise performance when sizing the bypass capacitor for the reference voltage pin. Evaluate the power dissipation limits against the expected ambient temperature and PCB copper area to ensure operation within absolute maximum ratings.

Part Context

The NJU7089 belongs to a series of high-power, low-voltage audio amplifiers designed by Nisshinbo Micro Devices. The R-TE2 designation specifically identifies the version housed in the VSP8 surface-mount package. This part is engineered to replace traditional single-ended amplifiers by offering higher output power efficiency through its bridge-tied load topology while maintaining low standby power consumption.

Replacement Considerations

NJU7089VC3-TE2