MCP1402T-E/OT vs STGAP2SICSNTR: Component Comparison for Gate Driver Applications
Quick verdict
For simple, low-side MOSFET or IGBT driving where isolation is not required and board space is tight, the MCP1402T-E/OT offers a compact, fast, and cost-effective solution with 500mA drive capability. In isolated gate driver applications demanding high voltage isolation, large drive current (4A), and improved transient immunity, the STGAP2SICSNTR is the clear choice despite its larger footprint and longer propagation delay.
Spec comparison table
| Spec | MCP1402T-E/OT | STGAP2SICSNTR | Notes |
|---|---|---|---|
| Channel type | Single | Single | Both single channel; no advantage |
| Current peak output source/sink | 500 mA source, 500 mA sink | 4 A source, 4 A sink | ST device provides 8x higher drive current, enabling faster switching of large MOSFET gates |
| Driven configuration | Low-Side | Not explicitly stated | MCP1402T-E/OT designed for low-side drive; ST device supports isolated high-voltage drive |
| Gate type | IGBT, MOSFET (N/P channel) | Not specified | MCP1402T-E/OT explicitly supports IGBT and MOSFET; ST is general capacitive coupling driver |
| Input type | Non-Inverting | Not explicitly stated | MCP1402T-E/OT input logic defined; ST input compatible with TTL/CMOS with hysteresis |
| Logic voltage VIH/VIL | 2.4 V VIH, 0.8 V VIL | TTL/CMOS with 3.3 V, 5 V hysteresis | MCP1402T-E/OT supports lower VIH, useful for 3.3 V logic signals |
| Mounting type | Surface Mount | Surface Mount | Both surface mount; no advantage |
| Number of drivers | 1 | 1 | Both single channel; no advantage |
| Operating temperature range (TJ) | -40°C to 150°C | -40°C to 125°C | MCP1402T-E/OT supports 25°C wider max TJ |
| Package case | SC-74A (SOT-23-5) | 8-SOIC (3.9 mm width) | MCP1402T-E/OT much smaller footprint, better for space-constrained designs |
| Rise/fall time typical | 19 ns rise, 15 ns fall | 30 ns rise, 30 ns fall | MCP1402T-E/OT faster switching edges, reduces switching losses |
| Supply voltage range | 4.5 V to 18 V | 16.4 V to 26 V | MCP1402T-E/OT supports wider and lower supply voltages, enabling more flexible designs |
| Voltage isolation | None | 4000 Vrms isolation | ST device provides galvanic isolation, critical for high-voltage or noisy environments |
| Common mode transient immunity | Not specified | 100 V/ns minimum | ST device designed for high dv/dt immunity, important in isolated power stages |
| Propagation delay (tplh/tphl max) | Not specified | 90 ns / 90 ns | MCP1402T-E/OT faster switching with ~20 ns rise/fall times likely implies lower delay |
| Pulse width distortion max | Not specified | 20 ns | Only ST specifies PWD; lower is better but only relevant in precision timing applications |
| Output current peak | 500 mA | 4 A | ST device can drive larger gate charge loads rapidly |
| Output voltage range (gate drive) | Up to 18 V supply | Up to 26 V supply | ST device supports higher gate drive voltage, useful for IGBTs or high gate voltage MOSFETs |
| Input voltage max isolation | None | 1700 V | ST device supports high input-output voltage isolation |
| Max switching frequency | Not specified | 1 MHz | ST device suitable for high-frequency switching applications |
| Quiescent current (typ standby) | Not specified | 1.8 mA | ST device standby current specified, may impact low power designs |
| Thermal resistance junction-to-ambient | Not specified | 123 °C/W | ST device thermal resistance given; MCP1402T-E/OT data not provided |
| UL Recognition | Not specified | UL 1577 recognized | ST device certified for isolation applications |
| Package dimensions (approx.) | ~2.9 mm x 1.3 mm (SOT-23-5) | 5 mm x 3.9 mm (8-SOIC) | MCP1402T-E/OT is significantly smaller, aiding compact layouts |
Design trade-offs
The MCP1402T-E/OT and STGAP2SICSNTR serve different niches despite both being single-channel gate drivers. The MCP1402T-E/OT is a low-side driver designed for non-isolated applications with moderate gate drive requirements (500mA peak). Its small SOT-23-5 package minimizes board space and cost, while its faster rise and fall times (19 ns / 15 ns typical) reduce switching losses and EMI in high-speed switching designs. The broad supply voltage range (4.5 V to 18 V) allows flexible power supply options, including 5 V and 12 V rails common in many systems. Its extended junction temperature rating (-40°C to 150°C) permits use in demanding thermal environments without derating.
In contrast, the STGAP2SICSNTR is a capacitive coupling gate driver with galvanic isolation rated to 4000 Vrms, enabling safe and reliable control of high-voltage power stages where ground referencing is not possible or undesirable. It delivers a robust 4 A peak output current, suited for large gate charge MOSFETs or IGBTs that demand rapid switching to minimize losses and improve efficiency. However, this capability comes with a larger SOIC-8 package (5 mm x 3.9 mm), a narrower temperature range (-40°C to 125°C), and longer propagation delays (~90 ns). The isolation and high transient immunity (100 V/ns minimum) make it ideal for industrial and automotive applications where noise immunity and safety are paramount but at the cost of increased complexity in layout and BOM.
Thermally, the MCP1402T-E/OT’s smaller package and lower current drive mean lower power dissipation per channel, easing thermal management. The ST device’s higher drive current and isolation barrier require careful PCB layout to maintain creepage and clearance distances (minimum 4 mm), and potentially larger or more complex thermal solutions to manage the 1.8 mA quiescent current in standby and the power dissipation from high drive currents.
Firmware-wise, the MCP1402T-E/OT’s non-inverting input with defined VIH/VIL thresholds (2.4 V / 0.8 V) simplifies logic interfacing directly with low-voltage MCUs. The STGAP2SICSNTR requires careful input signal conditioning due to TTL/CMOS inputs with hysteresis and has an inherent propagation delay and pulse width distortion that must be accounted for in timing-critical applications.
Cost-wise, the MCP1402T-E/OT is likely less expensive per unit due to its simpler function, smaller package, and lack of isolation. The ST device’s isolation barrier and certifications (UL 1577) add to its cost and complexity but are necessary for safety and regulatory compliance in isolated power systems.
Use-case fit
Choose MCP1402T-E/OT when…
- Driving a low-side N-channel MOSFET or IGBT in non-isolated DC-DC converters or motor drivers with gate charge under 100 nC.
- Board space is constrained and a compact SOT-23-5 package is required.
- Your supply voltage ranges from 4.5 V to 18 V and you want faster switching edges (<20 ns rise/fall).
- Operating temperature may reach up to 150°C junction temperature.
- You require simple, direct logic-level interfacing with 3.3 V or 5 V MCUs without isolation.
Choose STGAP2SICSNTR when…
- Driving high-side or floating MOSFETs or IGBTs requiring galvanic isolation rated to 4000 Vrms or higher.
- The application demands high gate drive currents (4 A) to switch large gate charge devices rapidly.
- Operating in environments with high dv/dt noise requiring 100 V/ns common mode transient immunity.
- Compliance with UL 1577 isolation standards is mandatory for safety certifications.
- Your design can accommodate a larger 8-SOIC package and the longer propagation delay (~90 ns).
Drop-in compatibility
These parts are not pin-compatible or footprint-compatible. The MCP1402T-E/OT comes in a 5-pin SOT-23-5 package aimed at low-side drive with a minimal pin count. The STGAP2SICSNTR is an 8-pin SOIC with isolation barrier and additional pins for supply, input, and output referencing. Substituting one for the other requires redesigning the PCB footprint and power/ground routing, especially considering isolation and creepage distances for the ST device. Signal timing and logic level thresholds also differ, so firmware adjustments are