Thermal Characteristics - Texas Instruments SimpleLink CC2640 Manual

CC2640
SWRS176 – FEBRUARY 2015
Recommended Operating Conditions (continued)
The operating conditions for CC2640 are listed below.
Falling supply voltage slew rate,
(1)
with low-power flash settings
Positive temperature gradient in No limitation for negative temperature gradient, or outside
(2)
standby
(1) For smaller coin cell batteries, with high worst-case end-of-life equivalent source resistance, a 22uF VDDS input capacitor (see
1) should be used to ensure compliance with this slew rate.
(2) Applications using RCOSC_LF as sleep timer must also consider the drift in frequency caused by a change in temperature. See
Section 5.13
5.4

Thermal Characteristics

NAME DESCRIPTION
Θ Junction-to-ambient thermal resistance
JA
Θ Junction-to-case (top) thermal resistance
JCtop
Θ
Junction-to-board thermal resistance
JB
Ψ Junction-to-top characterization parameter
JT
Ψ Junction-to-board characterization parameter
JB
Θ
Junction-to-case (bottom) thermal resistance
JCbot
(1) °C/W = degrees Celsius per watt.
14 Specifications
standby mode
Submit Documentation Feedback
Product Folder Links:
(1)
RSM (°C/W) RHB (°C/W)
36.9
30.3
7.6
0.4
7.4
2.1
Copyright © 2015, Texas Instruments Incorporated
CC2640
www.ti.com
MIN MAX UNIT
3 mV/us
5 °C/s
Figure 7-
(1) (1)
RGZ (°C/W)
32.8 29.6
24.0 15.7
6.8 6.2
0.3 0.3
6.8 6.2
1.9 1.9