BCM43525SK01

Overview

The BCM43525SK01 is a single-chip 802.11ac Wi-Fi and Bluetooth combo module designed for mobile and IoT applications. It integrates an 802.11ac MIMO transceiver with a dual-band 2.4 GHz/5 GHz radio, supporting up to 2x2:2 MIMO configuration for high throughput. The module includes a dedicated ARM Cortex-M4 processor for Bluetooth Low Energy (BLE) and Classic Bluetooth operations. It features integrated power amplifiers, low-noise amplifiers, and switches, eliminating the need for external RF components. The solution supports standard interfaces including SDIO for Wi-Fi and UART/HCI for Bluetooth connectivity.

Feature Summary

• Integrated dual-band 802.11ac Wi-Fi and Bluetooth combo functionality
• Supports 2x2:2 MIMO architecture for enhanced data rates and range
• Includes dedicated ARM Cortex-M4 core for BLE and Classic Bluetooth processing
• On-chip integration of RF front-end components including power amplifiers

Applications

• Smartphones and tablets requiring compact wireless connectivity
• Internet of Things (IoT) devices needing dual-mode communication
• Wearable technology with space-constrained form factors
• Mobile computing platforms requiring high-speed Wi-Fi and low-power Bluetooth

Procurement Notes

Verify the specific package variant and revision level against the manufacturer's latest datasheet before procurement. Ensure that the design supports the required SDIO and HCI interface protocols. Confirm regulatory certification status for target markets. Check for any recommended companion components or firmware updates specified in the official documentation.

Selection Notes

Select this component when a combined Wi-Fi and Bluetooth solution is required to save board space and reduce BOM complexity. It is suitable for designs needing 802.11ac performance alongside BLE capabilities. Consider thermal management requirements due to integrated RF power stages. Evaluate antenna design constraints associated with the integrated PA and LNA structure.

Part Context

This module belongs to Broadcom's line of wireless connectivity solutions, targeting the mobile and consumer electronics sectors. It represents a shift towards highly integrated system-in-package designs that consolidate multiple wireless standards into a single footprint. The product family emphasizes power efficiency and reduced external component count compared to discrete transceiver solutions.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Alternative modules from other manufacturers may require significant schematic and layout redesigns due to differences in pinouts, interface protocols, and RF characteristics.