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Product Detailed Parameters
- Description：IC AMP CLASS D STER 10W 28TSSOP
- Series：-
- Mfr：Richtek USA Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Class D
- Output Type：2-Channel (Stereo)
- Max Output Power x Channels @ Load：10W x 2 @ 8Ohm
- Voltage - Supply：8V ~ 25.5V
- Features：Short-Circuit and Thermal Protection
- Mounting Type：Surface Mount
- Supplier Device Package：28-TSSOP-EP
- Package / Case：28-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Operating Temperature：-40°C ~ 85°C (TA)
- Grade：-
- Qualification：-
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Overview
The RT9108NLZCP is a stereo Class-D audio power amplifier manufactured by Richtek USA Inc. It operates within an input supply voltage range of 8V to 16V and delivers up to 9W per channel into an 8Ω load from a 12V supply at 10% THD+N. The device achieves 88% efficiency, eliminating the need for external heat sinks during music playback. It features four selectable gain settings controlled by GAIN0 and GAIN1 pins, with typical gains ranging from 20dB to 36dB. The amplifier includes robust protection mechanisms such as short circuit protection with auto-recovery options and thermal shutdown at 150°C. It utilizes a TSSOP-28 package with an exposed pad for enhanced thermal dissipation.
Feature Summary
- High-efficiency Class-D architecture eliminates the need for external heat sinks during standard operation.
- Four selectable gain settings via dedicated logic pins allow flexible system integration.
- Integrated short circuit protection with optional automatic recovery functionality.
- Thermal protection shuts down outputs when die temperature exceeds 150°C.
Applications
- LCD-TV
- Monitors
- DVD Players
Procurement Notes
Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance and halogen-free status against current environmental regulations. Ensure the TSSOP-28 exposed pad package matches PCB footprint requirements. Check datasheet revisions for any updates to electrical characteristics or pin configurations before finalizing procurement.
Selection Notes
Select this amplifier for applications requiring high efficiency without active cooling. Verify that the load impedance supports the specified output power ratings. Ensure the control logic levels for SD, MUTE, and gain pins are compatible with the system microcontroller. Consider the thermal resistance of the PCB layout to maintain junction temperatures within safe operating limits under maximum load conditions.
Part Context
The RT9108NL series represents Richtek's solution for efficient stereo audio amplification in consumer electronics. Designed for bridge-tied load (BTL) speakers, it drives loads as low as 4Ω. The family includes variants like the RT9108N and RT9108NZCP, differing primarily in packaging and environmental compliance specifications while maintaining core functional similarities.
Replacement Considerations
Public confirmed substitute part number: TPA3101D2PHPR (Texas Instruments). Verify pin compatibility and electrical specifications before substitution.
FAQ
How is automatic short circuit recovery enabled?
Automatic recovery is enabled by connecting the FAULT pin directly to the SD pin, allowing the fault signal to automatically clear the latch.
What determines the amplifier gain?
The gain is determined by the logic states of the GAIN0 and GAIN1 pins, offering four selectable settings ranging from 20dB to 36dB.
