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SSM3J378R,LXHF-VB Product details
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The SSM3J378R, LXHF-VB is a Single P-MOSFET optimized for low-voltage power switching applications. Its Trench process balances low switching losses with high reliability, and the SOT23-3 package strikes a balance between heat dissipation and board space. The combination of -20V withstand voltage, -5A current capacity, and 34mΩ on-resistance (at VGS=4.5V) makes it an ideal cost-reducing upgrade for replacing traditional SOP-8 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-P | -20V | -0.6V | -5A | 46(mΩ) | 34(mΩ) | Trench |
| VB Package | Configuration | VCE | VGE | VGEth(V) | VCEsat15V | ICE | Technology |
|---|---|---|---|---|---|---|---|
| SOT23-3 | Single-P | Trench |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds18 | Technology |
|---|---|---|---|---|---|---|---|
| SOT23-3 | Single-P | -20V | -0.6V | -5A | Trench |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds6 | Technology |
|---|---|---|---|---|---|---|---|
| SOT23-3 | Single-P | -20V | -0.6V | -5A | Trench |
| VB Package | Polarity | Vz / VR | Pd | VF | IF | IR | Cd | Type |
|---|---|---|---|---|---|---|---|---|
| SOT23-3 | Single-P |
- VDS=-20V: Suitable for 3.3V/5V/12V low-voltage systems, provides ample margin for negative voltage spikes, reducing avalanche breakdown risk.
- VGS=±12V: Compatible with 1.8V~5V logic levels, can directly interface with MCU/PMIC, eliminating level-shifting circuits.
- Vth=-0.6V (typical): Ensures full conduction region even with low-voltage drive, ideal for battery voltage decay scenarios.
- RDS(on)=34mΩ @ VGS=4.5V: Low on-resistance significantly reduces temperature rise under full load, allowing for smaller copper areas for heat dissipation; on-resistance is 46mΩ at VGS=2.5V, maintaining good conduction characteristics under low-voltage drive.
- ID=-5A: Ample continuous current margin to handle peak demands of most portable and automotive auxiliary loads.
- Package SOT23-3: Small size, low parasitic parameters, supports high-frequency switching, saving PCB area and assembly costs.
- VGS=±12V: Compatible with 1.8V~5V logic levels, can directly interface with MCU/PMIC, eliminating level-shifting circuits.
- Vth=-0.6V (typical): Ensures full conduction region even with low-voltage drive, ideal for battery voltage decay scenarios.
- RDS(on)=34mΩ @ VGS=4.5V: Low on-resistance significantly reduces temperature rise under full load, allowing for smaller copper areas for heat dissipation; on-resistance is 46mΩ at VGS=2.5V, maintaining good conduction characteristics under low-voltage drive.
- ID=-5A: Ample continuous current margin to handle peak demands of most portable and automotive auxiliary loads.
- Package SOT23-3: Small size, low parasitic parameters, supports high-frequency switching, saving PCB area and assembly costs.
Domain and module applications：
Decision Value Analysis
- Portable Device Power Management: Low on-resistance improves load switch efficiency, extends battery life, and small package enables ultra-thin designs.
- Battery Protection Module: Fast response ensures microsecond shutdown during overcurrent/short circuit, low on-resistance reduces self-heating of the protection board.
- Low-Voltage Load Switch: Suitable for power domain switching in handheld terminals and wearable devices, logic-level direct drive simplifies peripheral circuits.
- Consumer Electronics Control Module: Compatible with low-voltage logic signals, suitable for high-volume, low-cost products like smart locks, USB power management, and IoT modules.
- LED Lighting Drive: Low on-state voltage drop reduces constant current source power consumption, supports multi-channel parallel connection, improving overall light efficiency.
- DC-DC Converter: Replaces traditional P-MOS in synchronous rectification or load switch applications, significantly improving heavy-load efficiency, facilitating module miniaturization.
- Automotive Auxiliary Power Supply: Voltage margin and wide operating temperature range adapt to low-voltage auxiliary loads on 12V automotive bus, high reliability.
**Selection Summary**: SSM3J378R,LXHF-VB achieves a balance between performance margin, package size, and system cost. It is a cost-effective general-purpose choice for -20V low-voltage P-channel 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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