The UCD7100 is a member of the UCD7K family of digital control compatible drivers for applications utilizing digital control techniques or applications requiring fast local peak current limit protection.

The UCD7100 is a low-side ±4-A high-current MOSFET gate driver. It allows the digital power controllers such as UCD9110 or UCD9501 to interface to the power stage in single ended topologies. It provides a cycle-by-cycle current limit function with programmable threshold and a digital output current limit flag which can be monitored by the host controller. With a fast 25-ns cycle-by-cycle current limit protection, the driver can turn off the power stage in the unlikely event that the digital system can not respond to a failure situation in time.

For fast switching speeds, the UCD7100 output stage uses the TrueDrive™ output architecture, which delivers rated current of ±4 A into the gate of a MOSFET during the Miller plateau region of the switching transition. It also includes a 3.3-V, 10-mA linear regulator to provide power to the digital controller.

The UCD7000 driver family is compatible with standard 3.3-V I/O ports of DSPs, Microcontrollers, or ASICs. UCD7100 is offered in aPowerPAD™ HTSSOP-14.

• Adjustable Current Limit Protection
• 3.3-V, 10-mA Internal Regulator
• DSP/µC Compatible Inputs
• Single ±4-A TrueDrive™ High Current Driver
• 10-ns Typical Rise and Fall Times with 2.2-nF Loads
• 25-ns Input-to-Output Propagation Delay
• 25-ns Current Sense to Output Delay
• Programmable Current Limit Threshold
• Digital Output Current Limit Flag
• 4.5-V to 15-V Supply Voltage Range
• Rated from –40°C to 105°C
• Lead(Pb)-Free Packaging
• APPLICATIONS
  • Digitally Controlled Power Supplies
  • DC/DC Converters
  • Motor Controllers
  • Line Drivers

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