MCP1402T-E/OT vs 2EDN7434RXTMA1: Low-Side Gate Driver ICs Comparison
Quick verdict
For low-current, space-constrained designs driving standard N- or P-channel MOSFETs or IGBTs, the MCP1402T-E/OT offers a compact, cost-effective solution with adequate drive strength. For applications requiring very high peak drive currents, faster switching, or driving GaN FETs, the 2EDN7434RXTMA1 is the superior choice due to its 10x higher peak current capability and faster rise/fall times.
Spec comparison table
| Spec | MCP1402T-E/OT | 2EDN7434RXTMA1 | Notes |
|---|---|---|---|
| Channel type | Single | Independent (2 drivers) | 2EDN7434RXTMA1 offers dual drivers, enabling more compact multi-channel designs |
| Peak output current (source/sink) | 500mA / 500mA | 5A / 5A | 2EDN7434RXTMA1 provides 10× higher peak current, critical for fast switching of large gates |
| Driven configuration | Low-Side | Low-Side | Equivalent |
| Gate type supported | IGBT, MOSFET (N/P-channel) | GaN FET, MOSFET (N-channel) | MCP1402T-E/OT supports P-channel MOSFETs and IGBTs; 2EDN7434RXTMA1 targets GaN and N-MOSFETs |
| Input type | Non-Inverting | Non-Inverting | Equivalent |
| Logic voltage thresholds (V_IL, V_IH) | 0.8 V / 2.4 V | 1.4 V / 1.9 V | MCP1402T-E/OT has wider input threshold margins, better for noisy or low-voltage logic inputs |
| Supply voltage range | 4.5 V – 18 V | 4.5 V – 20 V | 2EDN7434RXTMA1 supports slightly higher max voltage |
| Operating temperature range | -40°C to 150°C (TJ) | -40°C to 150°C (TJ) | Equivalent |
| Package type | SC-74A (SOT-23-5) | PG-TSSOP-8 (8-pin TSSOP) | MCP1402T-E/OT smaller footprint, better for space-constrained PCB layouts |
| Rise time (typical) | 19 ns | 8.6 ns | 2EDN7434RXTMA1 switches more than twice as fast, reducing switching losses |
| Fall time (typical) | 15 ns | 6 ns | Faster fall time on 2EDN7434RXTMA1 improves switching efficiency |
| Number of drivers | 1 | 2 | 2EDN7434RXTMA1 supports dual drivers, useful for half-bridge or multi-phase applications |
| High-side voltage max bootstrap | N/A | 20 V | Only applies to 2EDN7434RXTMA1, relevant for high-side driver configurations |
| Mounting type | Surface mount | Surface mount | Equivalent |
Design trade-offs
The most significant difference between these two drivers is the peak drive current capability: 500mA for the MCP1402T-E/OT versus 5A for the 2EDN7434RXTMA1. This 10× increase directly impacts the ability to drive large gate charge MOSFETs or GaN FETs at high switching frequencies with minimal switching losses. The 2EDN7434RXTMA1’s faster rise and fall times (8.6 ns and 6 ns vs. 19 ns and 15 ns) translate to reduced transition losses, improving overall efficiency in high-frequency designs.
Thermally, the higher peak current of the 2EDN7434RXTMA1 comes with increased power dissipation during switching events, which requires careful PCB layout with adequate copper area and thermal vias. In contrast, the MCP1402T-E/OT’s lower drive current reduces thermal stress and simplifies thermal management, making it suitable for low-power or space-constrained designs.
The input logic thresholds differ notably. MCP1402T-E/OT accepts lower logic input voltages (0.8 V max for logic low, 2.4 V min for logic high), improving noise immunity when driven from lower-voltage MCUs or noisy signals. The 2EDN7434RXTMA1’s narrower and higher thresholds (1.4 V low, 1.9 V high) require cleaner or higher-voltage logic signals.
Package size is another important consideration. The MCP1402T-E/OT’s SOT-23-5 package is significantly smaller than the 8-pin TSSOP of the 2EDN7434RXTMA1. For densely packed boards or cost-sensitive volume production where board real estate is premium, the MCP1402T-E/OT has an advantage. Conversely, the 2EDN7434RXTMA1’s dual-driver configuration in one package can reduce component count and BOM complexity in multi-channel designs.
The supply voltage range is roughly equivalent, but the 2EDN7434RXTMA1 supports up to 20 V, which can be beneficial in some higher-voltage gate drive scenarios.
Use-case fit
Choose MCP1402T-E/OT when…
- Driving low to moderate gate charge MOSFETs or IGBTs in low-side switching with peak currents under 500mA.
- Board space is very limited, and a small SOT-23-5 footprint is critical.
- Input logic signals are 3.3 V or lower, or noisy, requiring wider logic input thresholds.
- Thermal dissipation budget is tight, and switching frequencies are moderate, reducing driver power dissipation.
- Cost sensitivity favors a simpler single-driver device without the need for dual channels.
Choose 2EDN7434RXTMA1 when…
- Driving large gate charge MOSFETs or GaN FETs requiring high peak drive currents (up to 5A) for fast switching.
- Designing half-bridge or multi-phase converters needing two independent drivers in one package.
- Switching frequencies are high (>100 kHz), where faster rise/fall times reduce switching losses significantly.
- Input logic signals are clean, 3.3 V or 5 V logic with margin compatible with the 1.4 V / 1.9 V thresholds.
- The design can accommodate the larger 8-pin TSSOP footprint and requires the extended supply voltage range up to 20 V.
Drop-in compatibility
These parts are not pin-compatible or footprint-compatible. The MCP1402T-E/OT is a 5-pin SOT-23 package with a single driver channel, while the 2EDN7434RXTMA1 is an 8-pin PG-TSSOP with two independent drivers. Substituting one for the other requires significant PCB layout changes and firmware adjustments to handle single vs. dual channel operation and different input threshold levels.
Alternatives to consider
- MIC4452: High-current single-channel MOSFET driver with up to 9A peak current, suitable for demanding switching speed applications.
- UCC37322 (Texas Instruments): Dual high-speed MOSFET driver, capable of 9A peak drive, in a compact SOIC package.
- IR2110 (Infineon): High-voltage, high-speed driver for half-bridge and full-bridge MOSFET/IGBT applications with bootstrap functionality.
Each alternative offers different trade-offs in peak current, package size, and driver channel count, worth evaluating based on specific design constraints.