Secondary-side synchronous MOSFET driver and controller is designed for isolated flyback converters operating in discontinuous or border-conduction mode. The device operates from a 4.5 V to 36 V input and provides a regulated 7 V gate-drive supply for logic-level or standard MOSFETs. Peak gate-drive currents are 2 A source and 4 A sink, supporting fast transitions with low-RDS(on) synchronous rectifier MOSFETs. Programmable minimum off-time and turn-off trip point support robust operation with transformer ringing. The device is supplied in a 6-lead thin SOT-23 package and is specified from -40 °C to +125 °C.
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| Input operating voltage | 4.5 to 36V |
| Maximum drain operating voltage | 60V |
| Gate drive regulation voltage | 7.0 typV |
| Quiescent current | 320 typ, 450 maxµA |
| Switching current | 600 typµA |
| Gate peak source current | 2A |
| Gate peak sink current | 4A |
| Gate turn-on detect threshold | -94 typmV |
| Gate turn-off detect threshold | 30 typmV |
| Turn-on propagation delay | 26 typ, 40 maxns |
| Turn-off propagation delay | 32 typ, 50 maxns |
| Programmable off-time range | 115 to 1550ns |
| Minimum on-time | 240 typns |
| Operating temperature range | -40 to +125°C |
| Package | 6-lead thin SOT-23 |
| Thermal resistance junction-to-ambient | 110°C/W |
| Thermal resistance junction-to-case | 50°C/W |
| RoHS | Lead (Pb)-free/RoHS-compliant package denoted by + suffix |
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