The DK5V45R15 is a two‑pin synchronous rectifier chip with integrated 45 V NMOS, ultra‑low VF and built‑in self‑powering circuitry.
The DK5V45R15 synchronous rectifier chip from DKPower integrates a 45 V, 15 mΩ power NMOS in a compact SM‑7 package. It requires only two pins (A and K) and no external supply, providing ultra‑low forward voltage and reduced conduction loss for applications such as USB chargers, adapters and LED drivers.
The datasheet details electrical parameters, thermal limits, functional operation, typical application circuits, and package dimensions. It also includes safety notices and contact information for DKPower’s regional technical service centers. This manual is written in Chinese.
| NMOS source‑drain breakdown voltage (V(BR)DSS) | 45 V |
|---|---|
| NMOS maximum average current (ID) | 3.1 A |
| NMOS maximum peak current (IDS) | 30 A |
| Maximum power dissipation (PDMAX) | 1 W |
| Thermal resistance junction‑to‑ambient (RθJA) | 76 °C/W |
| Operating junction temperature range (TJ) | -25 °C to 120 °C |
| Startup voltage (VCC_ON) | 3.6 V |
| Over‑voltage protection threshold (VOVP) | 10 V |
| NMOS on‑resistance (RDS_ON) | 15 mΩ |
| Maximum switching frequency (FS_MAX) | 100 kHz |
The chip starts up when VCC reaches 3.6 V.
It has two pins, labeled A (anode) and K (cathode).
Typical applications include USB chargers, adapters and LED drivers.