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CYW4373
  • CYW4373

CYW4373

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Infineon’s AIROC™ CYW4373/CYW4373E/CYW43732 single-chip combo device features 1x1 dual-band 2.4 GHz and 5 GHz Wi-Fi 5 (802.11ac) and Bluetooth® 5.4. CYW43743E offers extended temperature range (-40 to +85°C). The 43732 offers dedicated LNA for Wi-Fi and Bluetooth® subsystems with integrated 2.4 GHz and 5 GHz power amplifiers and low-noise amplifiers. All versions contain a USB hub and SDIO Wi-Fi host interfaces. CYW4373E also supports PCIe.

Infineon Technologies CYW4373 Product Info

16 April 2026 0

Parameters

Antenna Configuration

1x1

Bluetooth Interface

UART/PCM

Bluetooth Specification

Bluetooth 5.4

Core

Cortex M3

CPU

N/A

Dimensions

5.43 x 4.51 mm

Family

AIROC™ Wi-Fi + Bluetooth® Combos

GPIOs

10

Launch Date

2018

Longevity - 15 years

Yes

Longevity - Extended

No

Memory

N/A

Operating system support

Linux, Android, RTOS

Operating Temperature range

-40 °C to 85 °C

Operating Voltage range

3.2 V to 4.8 V

Package

WLCSP-128

Partner Module

Y

Pitch

0.4 mm

Planned to be available until at least

01-09-2033

Product Description

Wi-Fi 5 combo

ROM

1088 KB

Software Support

ModusToolbox™

SRAM

384 kByte

Wi-Fi Band

2.4GHz, 5GHz

Wi-Fi Bandwidth

80 MHz

WI-FI Interface

SDIO/SPI/PCIe/USB

Wi-Fi Specification

Wi-Fi 5 (802.11ac)

Apps

Telecommunications infrastructure, EV charging, Smart thermostat

Features

  • Wi-Fi 5 (802.11ac) Dual-band (2.4/5 GHz)
  • 1x1 SISO
  • 20/40/80 MHz, up to 433Mbps PHY rate
  • Internal PA+LNA w/ External LNA support
  • Dual-Band ref design for increased range
  • 2.4-GHz Internal and 5-GHz Ext TR Switch
  • Class 1 (100m) & Class 2 (10m) operation
  • Option for separate BT ant (43732 only)
  • Host controller interface(HCI) over-UART
  • Declaration ID  D065388
  • QDID 228194

Description

  • Single USB interface for Wi-Fi/BT
  • Dedicated Bluetooth path for Coex
  • Multi-layer security protection

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