The HM4614K is HeroMicro a complementary N+P-channel MOSFET integrated into a single SOP-8D package. Leveraging advanced trench technology, it delivers ultra-low on-resistance (RDS(ON)), low gate charge (Qg), and excellent thermal performance—making it well-suited for power management, motor control, and load-switching applications. The device is available in tape-and-reel packaging (3000 pcs/reel) for automated assembly.
1.Key Electrical Characteristics (TA = 25°C)
Note: Dynamic parameters for the P-channel (e.g., Qg, Ciss) are not fully disclosed in the datasheet. Conservative design or manufacturer consultation is recommended.
2. Typical Applications
H-bridge or half-bridge drivers (e.g., small DC motor control)
Bidirectional power switches in battery-powered systems
USB power switches and hot-swap protection
Synchronous rectifiers in low-voltage DC-DC converters
Logic-level compatible load switches (supports 4.5V gate drive)
3. Design Considerations
Gate Drive Recommendations:
N-channel: Use VGS ≥ 4.5V (10V optimal). RDS(ON) is typically 22 mΩ at 4.5V.
P-channel: Drive with VGS ≤ -4.5V (-10V recommended) to ensure RDS(ON) < 50 mΩ.
Thermal Management:
Max power dissipation is 2.5 W at TA = 25°C, but limited by SOP-8 thermal performance.
With RθJA = 62.5°C/W, even 1W of power raises the junction temperature by 62.5°C above ambient.
Use large copper areas connected to Drain pins (D1/D2) for improved heat spreading.
Switching & EMI:
The N-channel features low Qg (10 nC) and high Ciss (979 pF), suitable for medium-frequency switching.
Due to incomplete P-channel dynamic data, high-frequency designs should prioritize the N-channel or validate P-channel performance empirically.
Body Diode Usage:
The intrinsic body diode can be used for freewheeling, but reverse recovery characteristics are not specified—potential switching losses may occur in bridge topologies.
Reliability:
Compliant with green (RoHS) standards.
All static parameters are measured with<300 µs pulses (≤0.5% duty cycle). Continuous operation requires derating.
4. PCB Layout Tips
Connect source pins (S1 for N, S2 for P) directly to ground or power planes with short, wide traces.
Keep gate traces short and consider adding a small series resistor (e.g., 10 Ω) to damp oscillations.
SOP-8D pinout:G2 – D1 – D1 – D2 – D2 – S1 – G1 – S2
Note that D1 and D2 are internally connected—merge their copper areas to enhance thermal performance.
