L6229Q STMicroelectronics, L6229Q Datasheet - Page 24

• Manufacturer Part Number: L6229Q
• Description: Motor / Motion / Ignition Controllers & Drivers DMOS Driver for 3-phase DC motor
• Manufacturer: STMicroelectronics
• Type: 3 Phase Brushless DC Motor Controllerr

Specifications of L6229Q

• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 8V
• Operating Supply Voltage (max): 52V
• Product: Stepper Motor Controllers / Drivers
• Operating Supply Voltage: 8 V to 52 V
• Supply Current: 3.55 A
• Mounting Style: SMD/SMT
• Package / Case: VQFN-32
• Operating Temperature: + 150 C
• Lead Free Status / RoHS Status: Compliant

Application information
6.2
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Thermal management
In most applications the power dissipation in the IC is the main factor that sets the maximum
current that can be delivered by the device in a safe operating condition. Therefore, it has to
be taken into account very carefully. Besides the available space on the PCB, the right
package should be chosen considering the power dissipation. Heat sinking can be achieved
using copper on the PCB with proper area and thickness.
For instance, using a VFQFPN32L 5 x 5 package the typical R
mounted on a double-layer FR4 PCB with a dissipating copper area of 0.5 cm
side plus 6 cm
2
ground layer connected through 18 via holes (9 below the IC).
Doc ID 15209 Rev 3
th(JA)
is about 42 °C/W when
2
on the top
L6229Q