BCM4354 datasheet(185/192 Pages) CYPRESS

Part #	BCM4354

Description	Single-Chip 5G Wi-Fi IEEE 802.11ac 2횞2 MAC/ Baseband/Radio with Integrated Bluetooth 4.1 and FM Receiver

PDF	192 Pages

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Manufacturer	CYPRESS [Cypress Semiconductor]

Direct Link	http://www.cypress.com

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185 / 192 page

Package Information

BCM4354 Data Sheet

BROADCOM CONFIDENTIAL

Broadcom®

October 15, 2014 • 4354-DS109-R

Page 184

Section 22: Package Information

Package Thermal Characteristics

The information in Table 62 and Table 63 is based on the following conditions:

• No heat sink, TA = 70°C. This is an estimate, based on a 4-layer PCB that conforms to EIA/JESD51–7

(101.6 mm × 101.6 mm × 1.6 mm) and P = 1.53W continuous dissipation.

• Absolute junction temperature limits are maintained through active thermal monitoring and driver-based

techniques that may include duty-cycle limiting or turning off one of the TX chains, or both.

Table 62: WLCSP Package Thermal Characteristics

Characteristic

WLCSP

θJA (°C/W) (value in still air)

26.86

θJB (°C/W)

2.23

θJC (°C/W)

1.09

JT (°C/W)

2.48

JB (°C/W)

11.61

Maximum Junction Temperature Tj (°C)

125

Maximum Power Dissipation (W)

1.53

Table 63: WLBGA Package Thermal Characteristics

Characteristic

WLBGA

θJA (°C/W) (value in still air)

26.80

θJB (°C/W)

1.66

θJC (°C/W)

1.16

JT (°C/W)

1.85

JB (°C/W)

7.93

Maximum Junction Temperature Tj (°C)

125

Maximum Power Dissipation (W)

1.53

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