AMC5902 Datasheet, PDF (12/14 Pages) List of Unclassifed Manufacturers – 6CH Motor Driver for CD-ROM, DVD-ROM

AMC DOC. #: AMC5902_B
March 2004
AMC5902
6CH Motor Driver for
CD-ROM, DVD-ROM
APPLICATION INFORMATION (continued)
When power dissipation is over 1.4W (T_A=70°C), additioned heat sink is required to control chip junction temperature
below 150°C. The power TSOP package has 10 GND pins connected to internal leadframe pad for enhanced power
dissipation (12-16,39-43) performance.
Using bigger area of ground plane (as heat sink) can reduce chip temperature significantly.
T_J = T_A + P_D (θ_JC + θ_CA )
For power TSOP package, θ_JC = 6.1° C / W
For further improvement of heat problem, extra heat sink can be used by clipping it to the thermal pad on the top.
Copyright  2003, 2004 ADD Microtech Corp
12
www.addmtek.com