ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC AMP CLASS D MONO 3W 9WCSP
- Series：-
- Mfr：Diodes Incorporated
- Package：Bulk
- Type：Class D
- Output Type：1-Channel (Mono)
- Max Output Power x Channels @ Load：3W x 1 @ 4Ohm
- Voltage - Supply：2.8V ~ 5.5V
- Features：Depop, Short-Circuit and Thermal Protection
- Mounting Type：Surface Mount
- Supplier Device Package：9-WCSP (1.45x1.45)
- Package / Case：9-WFBGA, WLCSP
- Operating Temperature：-40°C ~ 85°C (TA)
- Grade：-
- Qualification：-
Download product information
Overview
The PAM8303CAZN_05 is a 3W mono, filterless Class-D audio power amplifier manufactured by Diodes Incorporated. It operates on a single supply voltage ranging from 2.8V to 5.5V and delivers up to 3W of output power into a 4Ω load at 5V with 10% THD+N. The device features ultra-low EMI performance, exceeding FCC Class-B standards by 20dB at 300MHz. It incorporates high PSRR, differential inputs, short-circuit protection, and thermal shutdown. The component is available in MSOP-8 and U-DFN3030-8 packages.
Feature Summary
- Filterless architecture eliminates the need for external output LC filters, reducing PCB area and system costs.
- Ultra-low EMI design provides superior noise immunity compared to standard FCC Class-B limits.
- High efficiency reaches up to 90% at 1W output with an 8Ω speaker load.
- Integrated protection mechanisms include short-circuit protection and thermal shutdown.
Applications
- Cellular phones
- Smart phones
- MP4/MP3 players
- GPS devices
- Portable game machines
Procurement Notes
Verify the specific package type required, as the PAM8303C series includes MSOP-8, U-DFN3030-8, and WCSP options. Confirm that the selected variant aligns with the intended PCB layout constraints. Check current availability status, as certain package configurations may be discontinued or end-of-life. Ensure compliance with RoHS and halogen-free requirements if mandated by the final product specifications.
Selection Notes
Select this amplifier for portable applications requiring high efficiency and minimal external components. The filterless design simplifies BOM and reduces board space. Consider the operating voltage range of 2.8V to 5.5V for battery-powered systems. Evaluate the thermal resistance characteristics based on the chosen package for adequate heat dissipation under maximum load conditions.
Part Context
The PAM8303C belongs to Diodes Incorporated's line of Class-D audio amplifiers designed for mobile consumer electronics. It replaces older filter-based designs by integrating advanced modulation techniques. The family includes variants like PAM8303CBSC and PAM8303CBYC. This specific model targets compact form factors where size and power consumption are critical constraints.
Replacement Considerations
The datasheet explicitly recommends using the PAM8304 as the alternative for new designs. Note that the PAM8303CCYC is End of Life, with PAM8303CBYC recommended as its substitute. Verify pin compatibility and electrical parameters when transitioning to replacement parts.
FAQ
Does the PAM8303CAZN require external output filters?
No, it utilizes a filterless architecture that drives speakers directly without external LC filters.
What is the shutdown current specification?
The shutdown current is less than 1µA when the SD pin is pulled low.
How does the device handle over-temperature conditions?
It features thermal shutdown that disables outputs if the junction temperature exceeds approximately 135°C, resuming operation once the temperature drops by about 30°C.
