UCC27511DBVR

• Single-Channel Low-Side Gate driver, 4 A Source and 8 A Sink
• Split Outputs for Independent Turn-on and Turn-Off Gate Resistance
• 5 V Undervoltage Lockout
• 4.5 V to 18 V Supply range, 12 V nominal, 75 uA Supply Current
• 13 Ns Propagation delay, 8 Ns Rise and 7 Ns Fall Time
• 6-Pin SOT-23 package, 2.9 Mm X 1.6 mm, 1.45 Mm Height
• -40 C to 140 C Operating range, 140 C Maximum Junction Temperature
• Lead free, RoHS compliant, Active status, Tape and Reel

The Texas Instruments UCC27511DBVR is a single-channel low-side gate driver rated at 4 A source and 8 A sink, with split outputs and 5 V undervoltage lockout, supplied in a 6-pin SOT-23 package measuring 2.9 mm x 1.6 mm. It operates from 4.5 V to 18 V at a nominal 12 V, drawing 75 uA nominal supply current, with a 13 ns propagation delay, 8 ns rise time and 7 ns fall time. The UCC27511DBVR is rated -40 C to 140 C with a 140 C maximum junction temperature, is lead free, RoHS compliant with no declared REACH SVHC substances, and at Active lifecycle status shipping on tape and reel. Split outputs let the designer set turn-on and turn-off gate resistance independently, which is how switching speed and ringing are traded off in practice.

The UCC27511DBVR is used to drive the gate of a power MOSFET or IGBT hard and fast from a controller output that cannot supply the peak current a large gate charge demands. High peak current shortens the switching transition, which is where most of the loss in a hard-switched converter occurs, and the asymmetric 4 A source and 8 A sink ratings favour fast turn-off for shoot-through immunity. Typical placements are switch-mode power supplies, DC-DC converter power stages, motor drives, solar inverters, and synchronous rectification circuits. Buyers are power supply and industrial drive manufacturers, renewable energy equipment makers, and contract manufacturers building power conversion boards.