1 Features

• Adjustable Current Limit Protection
• 3.3-V, 10-mA Internal Regulator
• DSP/μC Compatible Inputs
• Dual ±4-A TrueDrive™ High Current Drivers
• 10-ns Typical Rise and Fall Times with 2.2-nF Loads
• 20-ns Input-to-Output Propagation Delay
• 25-ns Current Sense-to-Output Propagation 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

2 Applications

• Digitally Controlled Power Supplies
• DC/DC Converters
• Motor Controllers
• Line Drivers

3 Description

The UCD7201 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 UCD7201 includes dual low-side ±4-A high-current MOSFET gate drivers. It allows the digital power controllers such as UCD9110 or UCD9501 to interface to the power stage in double ended topologies. It provides a cycle-by-cycle current limit function for both driver channels, a programmable threshold and a digital output current limit flag which can be monitored by the host controller. With a fast cycle-by-cycle current limit protection, the driver can turn off the power stage in the event of an overcurrent condition.

1. For all available packages, see the orderable addendum at the end of the datasheet.

Typical Application Diagram (Push-Pull Converter)