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Product Detailed Parameters
- Description：1.2W MONAURAL SPEAKER AMPLIFIER
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Class AB
- Output Type：1-Channel (Mono)
- Max Output Power x Channels @ Load：1.6W x 1 @ 8Ohm
- Voltage - Supply：4V ~ 5.5V
- Features：-
- Mounting Type：Surface Mount
- Supplier Device Package：8-HTSOP-J
- Package / Case：8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Operating Temperature：-40°C ~ 105°C (TA)
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The BD78306EFJ-ME2 is a Class-AB monaural speaker amplifier designed for automotive applications. It features a fixed voltage gain of 6 dB and differential input configuration. The device operates within a supply voltage range of 4 V to 5.5 V, delivering an output power of 1.2 W into an 8 Ω load with 0.05% THD+N. It supports loads down to 4 Ω. The component functions in temperatures from -40°C to +105°C and includes a shutdown feature with typical standby current of 0.1 µA.
Feature Summary
- Class-AB topology minimizes radiation noise concerns while enabling high power output in a compact HTSOP-J8 package.
- Low quiescent and shutdown currents reduce battery burden during standby, supporting frequent on/off cycling with minimal pop noise.
Applications
- Automotive audio systems
- Monaural speaker amplification
- Battery-powered vehicle electronics
Procurement Notes
Verify the specific suffix ME2 against official ROHM documentation to confirm packaging and tape specifications. Ensure the ordering part number matches the required automotive grade AEC-Q100 compliance. Confirm functional safety support status if system-level analysis is required. Cross-reference datasheet revisions to validate parameter consistency before integration.
Selection Notes
Select this component for single-channel audio applications requiring low distortion and high efficiency in automotive environments. The 6 dB gain suits direct interface with standard audio sources. Consider the 4 Ω minimum load capability for flexible speaker matching. Verify thermal performance within the HTSOP-J8 package constraints for the intended power dissipation levels.
Part Context
This amplifier belongs to the BD783xxEFJ-M series, which offers various voltage gain options ranging from 6 dB to 26 dB. All members share the same automotive-grade design philosophy, focusing on low power consumption and robust operation under varying vehicle electrical conditions. The series targets cost-sensitive yet reliable infotainment solutions.
Replacement Considerations
Other members of the BD783xxEFJ-M family may serve as alternatives if different gain values are required. Verify pin compatibility and thermal characteristics when substituting. No other specific cross-references are documented in the provided data.
