L6226Q STMicroelectronics, L6226Q Datasheet - Page 20

• Manufacturer Part Number: L6226Q
• Description: IC DRIVER FULL BRG DUAL 32VFQFPN
• Manufacturer: STMicroelectronics
• Type: H Bridger

Specifications of L6226Q

• Input Type: Non-Inverting
• Number Of Outputs: 4
• On-state Resistance: 730 mOhm
• Current - Output / Channel: 1.4A
• Current - Peak Output: 2.8A
• Voltage - Supply: 8 V ~ 52 V
• Operating Temperature: -25°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 32-VFQFN, 32-VFQFPN
• Product: H-Bridge Drivers
• Rise Time: 250 ns
• Fall Time: 250 ns
• Supply Voltage (min): 8 V
• Maximum Operating Temperature: + 150 C
• Mounting Style: SMD/SMT
• Bridge Type: Full Bridge
• Maximum Turn-on Delay Time: 1900 ns
• Minimum Operating Temperature: - 40 C
• Number Of Drivers: 2
• For Use With: 497-6816 - EVAL BOARD FOR L6226Q
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Paralleled operation
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Figure 15. Parallel connection for higher current
To operate the device in parallel and maintain a lower over current threshold, half bridge 1
and the half bridge 2 of the bridge A can be connected in parallel and the same done for the
bridge B as shown in
still limited by the bond wires for the supply and sense pins so the dissipation in the device
will be reduced, but the peak current rating is not increased.
When connected in this configuration the over current detection circuit, senses the sum of
the current in upper devices connected in parallel. With the enables connected in parallel,
an over current will turn of both bridges. Since the circuit senses the total current in the
upper devices, the over current threshold is equal to the threshold set the resistor R
R
resistor R
It is recommended to use R
In this configuration, the resulting bridge has the following characteristics.
●
●
●
●
CLB
Equivalent device: FULL BRIDGE
R
1.4 A max RMS load current
2.8 A max OCD threshold
in
DS(on)
Figure
CLB
0.37 Ω typ. value @ T
sets the threshold when outputs OUT1
16. R
CLA
Figure
sets the threshold when outputs OUT1
CLA
16. In this configuration, the peak current for each half bridge is
Doc ID 14335 Rev 5
= R
J
CLB
= 25 °C
.
B
and OUT2
A
B
and OUT2
are high.
A
are high and
L6226Q
CLA
or