The maximum current rating of the UDN2916B is 1.5A per channel, with a maximum total current of 3A for all channels combined.
To avoid shoot-through current, it is recommended to sequence the enable pins in the following order: EN1 high, EN2 high, EN1 low, EN2 low. This ensures that one channel is fully off before the other channel is turned on.
The diagnostic output (DO) pin is an open-drain output that indicates an overcurrent or overtemperature fault condition. It can be used to trigger an interrupt or alarm in the system.
The current sense resistor (RSENSE) value can be calculated using the formula: RSENSE = (VREF / ISNSE) x (RATIO / GAIN), where VREF is the reference voltage, ISNSE is the sense current, RATIO is the current sense ratio, and GAIN is the gain of the current sense amplifier.
A good PCB layout for the UDN2916B should include a solid ground plane, wide power traces, and a thermal pad connected to a heat sink or thermal vias. Thermal management is critical, as the device can dissipate up to 2.5W of power. A heat sink or thermal interface material can be used to improve heat dissipation.
Trust Checks
This model has been provided by community users.
Community Provided
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored
UDN2916B Overview
Use the download button to access the UDN2916B schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like UDN29,
or try a keyword search, such as Other uPs/uCs/Peripheral ICs
