LM5109A Datasheet | National Semiconductor

Description The LM5109A is a cost effective, high voltage gate driver designed to drive both the high-side and the low-side N-Channel MOSFETs in a synchronous buck or a half bridge configuration. The floating high-side driver is capable of working with rail voltages up to 90V. The outputs are independently controlled with TTL patible input thresholds. The robust level shift technology operates at high speed while consuming low power and providing clean level transitions from the control input logic to the high-side gate driver. Under-voltage lockout is provided on both the lowside and the high-side power rails. The device is available in the SOIC-8 and the thermally enhanced LLP-8 packages. n n n n n n n Bootstrap supply voltage to 108V DC Fast propagation times (30 ns typical) Drives 1000 p F load with 15ns rise and fall times Excellent propagation delay matching (2 ns typical) Supply rail under-voltage lockout Low power consumption Pin patible with ISL6700 Typical Applications n n n n Current Fed push-pull converters Half and Full Bridge power converters Solid state motor drives Two switch forward power converters Features n Drives both a high-side and low-side N-Channel MOSFET n 1A peak output current (1.0A sink / 1.0A source) n Independent TTL patible inputs Package n SOIC-8 n LLP-8 (4 mm x 4 mm) Simplified Block Diagram FIGURE 1. © 2006 National Semiconductor Corporation DS201702 .national. .Data Sheet.in Connection Diagrams FIGURE 2. Ordering Information Ordering Number LM5109AMA LM5109AMAX LM5109ASD LM5109ASDX Package Type SOIC-8 SOIC-8 LLP-8 LLP-8 NSC Package Drawing M08A M08A SDC08A SDC08A Supplied As 95 Units in anti static rails 2500 Units on Tape & Reel 1000 Units on Tape & Reel 4500 Units on Tape & Reel Pin Descriptions Pin # SO-8 1 2 3 4 5 6 7 8 LLP-8 1 2 3 4 5 6 7 8 Name VDD HI LI VSS LO HS HO HB Description Positive gate drive supply High side control input Low side control input Ground reference Low...