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SSM3K389R,LF-VB Product details
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SSM3K389R is a Single N-MOS deeply optimized for 60V low-voltage power switching scenarios. The Trench process balances low switching loss and high reliability, while the SOT23-3 package strikes a balance between heat dissipation and board space. The combination of 60V withstand voltage, 4A current capacity, and 75mΩ on-resistance makes it an ideal cost-reduction incremental alternative to larger packaged devices, especially suitable for high-density, high-volume applications.
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Product parameter：
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds2.5 | Rds4.5 | Rds10 | Technology |
|---|---|---|---|---|---|---|---|---|---|
| SOT23-3 | Single-N | 60V | 1.7V | 4A | 86(mΩ) | 75(mΩ) | Trench |
| VB Package | Configuration | VCE | VGE | VGEth(V) | VCEsat15V | ICE | Technology |
|---|---|---|---|---|---|---|---|
| SOT23-3 | Single-N | Trench |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds18 | Technology |
|---|---|---|---|---|---|---|---|
| SOT23-3 | Single-N | 60V | 1.7V | 4A | Trench |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds6 | Technology |
|---|---|---|---|---|---|---|---|
| SOT23-3 | Single-N | 60V | 1.7V | 4A | Trench |
| VB Package | Polarity | Vz / VR | Pd | VF | IF | IR | Cd | Type |
|---|---|---|---|---|---|---|---|---|
| SOT23-3 | Single-N |
VDS=60V: Suitable for 12V/24V/48V systems, providing ample margin for voltage spikes and reducing avalanche breakdown risk.
VGS=±20V: Compatible with 4.5V~12V logic levels, can be directly connected to MCU/PMIC, eliminating level shift circuits.
Vth=1.7V (typical): Ensures sufficient turn-on even with low-voltage drive, ideal for battery voltage decay scenarios.
RDS(on)=75mΩ @ VGS=10V: Low on-resistance significantly reduces temperature rise under full load, minimizing required copper area for heat dissipation.
RDS(on)=86mΩ @ VGS=4.5V: Maintains good conduction characteristics under low-voltage drive, suitable for direct 5V logic control.
ID=4A: Ample continuous current margin to handle peak demands of most portable and auxiliary automotive loads.
Package SOT23-3: Small size, low parasitic parameters, supports high-frequency switching, saves PCB area and assembly cost.
VGS=±20V: Compatible with 4.5V~12V logic levels, can be directly connected to MCU/PMIC, eliminating level shift circuits.
Vth=1.7V (typical): Ensures sufficient turn-on even with low-voltage drive, ideal for battery voltage decay scenarios.
RDS(on)=75mΩ @ VGS=10V: Low on-resistance significantly reduces temperature rise under full load, minimizing required copper area for heat dissipation.
RDS(on)=86mΩ @ VGS=4.5V: Maintains good conduction characteristics under low-voltage drive, suitable for direct 5V logic control.
ID=4A: Ample continuous current margin to handle peak demands of most portable and auxiliary automotive loads.
Package SOT23-3: Small size, low parasitic parameters, supports high-frequency switching, saves PCB area and assembly cost.
Domain and module applications：
Decision Value Analysis
Portable Device Power Management: Low on-resistance improves boost/buck efficiency, extends battery life, small package aids ultra-thin design.
Battery Protection Module: Fast response ensures microsecond shutdown during overcurrent/short circuit, low on-resistance reduces self-heating of the protection board.
Low Voltage Motor Drive: Low PWM switching loss, smoother motor operation, significantly lower controller temperature rise.
Consumer Electronics Control Module: Logic level direct drive simplifies peripherals, suitable for high-volume, low-cost products like smart sockets and USB switches.
LED Lighting Driver: Low conduction voltage drop reduces constant current source power loss, supports multi-channel parallel connection, improves overall luminaire efficacy.
DC-DC Converter: Replaces low-voltage drop diodes in synchronous rectification, effectively improves heavy load efficiency, facilitates module miniaturization.
Automotive Auxiliary Power: Voltage margin and wide operating temperature range adapt to 12V/24V vehicle bus, high reliability. Selection Summary: SSM3K389R achieves a balance between performance margin, package size, and system cost. It is a cost-effective general-purpose choice for 60V low-voltage switching applications, especially suitable for projects with strict space and thermal requirements.
* Please note: the above is only an example application scenario, the specific application depends on the requirements and conditions of the system design. When using this device, consult its data sheet for detailed technical specifications and features
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