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MIC4426BN Low-Side Gate Driver IC Equivalent & Substitute Parts
Part Overview
The MIC4426BN is a low-side gate driver IC manufactured by Microchip Technology, designed for driving N-Channel and P-Channel MOSFETs in power management applications. This component operates with a supply voltage range of 4.5V to 18V and delivers peak output currents of 1.5A (source and sink). The MIC4426BN is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across supply voltage, logic voltage thresholds, output current ratings, and mechanical packaging specifications.
Substiute Parts
Key Parameters
| Parameter | MIC4426BN Value |
|---|---|
| Driven Configuration | Low-Side |
| Number of Drivers | 2 |
| Gate Type | N-Channel, P-Channel MOSFET |
| Voltage - Supply | 4.5V ~ 18V |
| Logic Voltage - VIL, VIH | 0.8V, 2.4V |
| Current - Peak Output (Source, Sink) | 1.5A, 1.5A |
| Input Type | Inverting |
| Rise / Fall Time (Typ) | 20ns, 29ns |
| Operating Temperature | -40°C ~ 150°C (TJ) |
| Mounting Type | Through Hole |
| Package / Case | 8-DIP (0.300", 7.62mm) |
| Supplier Device Package | 8-PDIP |
| Product Status | Obsolete |
| RoHS Status | RoHS non-compliant |
Substitute Part Grouping Explanation
Substitute parts for the MIC4426BN are qualified based on the following electrical and mechanical criteria:
Primary Substitution Criteria:
- Driven Configuration: Low-Side
- Number of Drivers: 2
- Gate Type: N-Channel and/or P-Channel MOSFET compatibility
- Voltage - Supply: 4.5V ~ 18V (minimum overlap required)
- Logic Voltage - VIL, VIH: 0.8V, 2.4V (or compatible threshold levels)
- Current - Peak Output: 1.5A minimum (source and sink)
- Input Type: Inverting
- Package / Case: 8-DIP (0.300", 7.62mm)
- Supplier Device Package: 8-PDIP
Grouping Categories:
Group 1: Direct Microchip Technology Equivalents (Active Status) Parts MIC4426YN, TC426CPA, TC426EPA, TC4426CPA, TC4426EPA, and TC4426VPA are manufactured by Microchip Technology and maintain identical or superior electrical specifications. These parts are active products with RoHS3 compliance, addressing the obsolescence and compliance limitations of the MIC4426BN.
Group 2: Cross-Manufacturer Alternatives (Active Status) Parts MAX4426CPA+, MAX4426EPA+, IR4426PBF, and ICL7667CPAZ are manufactured by Analog Devices Inc./Maxim Integrated, International Rectifier, and Renesas Electronics Corporation respectively. These parts meet the core electrical requirements and package specifications while offering active product status and modern compliance certifications.
Parameter Comparison
| Part Number | Manufacturer | Supply Voltage | Logic VIL, VIH | Peak Output (Source, Sink) | Rise/Fall Time (Typ) | Operating Temp | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|
| MIC4426BN | Microchip Technology | 4.5V ~ 18V | 0.8V, 2.4V | 1.5A, 1.5A | 20ns, 29ns | -40°C ~ 150°C (TJ) | Obsolete | RoHS non-compliant |
| MIC4426YN | Microchip Technology | 4.5V ~ 18V | 0.8V, 2.4V | 1.5A, 1.5A | 20ns, 29ns | -40°C ~ 150°C (TJ) | Active | ROHS3 Compliant |
| TC426CPA | Microchip Technology | 4.5V ~ 18V | 0.8V, 2.4V | 1.5A, 1.5A | 30ns, 30ns | 0°C ~ 70°C (TA) | Active | ROHS3 Compliant |
| TC426EPA | Microchip Technology | 4.5V ~ 18V | 0.8V, 2.4V | 1.5A, 1.5A | 30ns, 30ns | -40°C ~ 85°C (TA) | Active | ROHS3 Compliant |
| TC4426CPA | Microchip Technology | 4.5V ~ 18V | 0.8V, 2.4V | 1.5A, 1.5A | 19ns, 19ns | 0°C ~ 70°C (TA) | Active | ROHS3 Compliant |
| TC4426EPA | Microchip Technology | 4.5V ~ 18V | 0.8V, 2.4V | 1.5A, 1.5A | 19ns, 19ns | -40°C ~ 85°C (TA) | Active | ROHS3 Compliant |
| TC4426VPA | Microchip Technology | 4.5V ~ 18V | 0.8V, 2.4V | 1.5A, 1.5A | 19ns, 19ns | -40°C ~ 125°C (TA) | Active | ROHS3 Compliant |
| MAX4426CPA+ | Analog Devices Inc./Maxim Integrated | 4.5V ~ 18V | 0.8V, 2.4V | 1.5A, 1.5A | 20ns, 20ns | 0°C ~ 70°C (TA) | Active | ROHS3 Compliant |
| MAX4426EPA+ | Analog Devices Inc./Maxim Integrated | 4.5V ~ 18V | 0.8V, 2.4V | 1.5A, 1.5A | 20ns, 20ns | -40°C ~ 85°C (TA) | Active | ROHS3 Compliant |
| IR4426PBF | International Rectifier | 6V ~ 20V | 0.8V, 2.7V | 2.3A, 3.3A | 15ns, 10ns | -40°C ~ 150°C (TJ) | Active | Not specified |
| ICL7667CPAZ | Renesas Electronics Corporation | 4.5V ~ 15V | 0.8V, 2V | Not specified | 20ns, 20ns | 0°C ~ 70°C (TA) | Active | ROHS3 Compliant |
Engineering Selection Recommendations
For Direct Replacement with Enhanced Compliance: MIC4426YN is the primary substitute for MIC4426BN. Both parts are manufactured by Microchip Technology with identical electrical specifications. MIC4426YN is active and RoHS3 compliant, eliminating obsolescence and regulatory compliance concerns while maintaining full electrical compatibility.
For Extended Temperature Range Applications: TC4426VPA extends the operating temperature range to -40°C ~ 125°C (TA) compared to the MIC4426BN's -40°C ~ 150°C (TJ). This part is suitable for applications requiring wider ambient temperature operation while maintaining all core electrical parameters.
For Improved Switching Performance: TC4426CPA, TC4426EPA, and TC4426VPA offer faster rise and fall times (19ns typical) compared to the MIC4426BN (20ns, 29ns typical). These parts are active Microchip products with RoHS3 compliance and identical supply voltage and output current specifications.
For Cross-Manufacturer Alternatives: MAX4426CPA+ and MAX4426EPA+ (Analog Devices Inc./Maxim Integrated) provide identical electrical specifications to the MIC4426BN with active product status and RoHS3 compliance. These parts are suitable for applications where supply chain diversification is required.
IR4426PBF (International Rectifier) offers enhanced performance with higher peak output currents (2.3A source, 3.3A sink) and faster switching times (15ns, 10ns typical). The supply voltage range extends to 6V ~ 20V, providing broader operational flexibility. This part is active and suitable for high-performance gate driving applications.
ICL7667CPAZ (Renesas Electronics Corporation) is a hi-side/lo-side gate driver alternative with identical package and similar switching characteristics. This part is active and RoHS3 compliant but operates within a narrower supply voltage range (4.5V ~ 15V).
Compliance Considerations: All recommended substitutes except IR4426PBF are RoHS3 compliant, addressing regulatory requirements for new designs. The MIC4426BN's RoHS non-compliant status makes transition to compliant alternatives necessary for applications subject to RoHS regulations.
Frequently Asked Questions (FAQ)
Q: Can MIC4426YN directly replace MIC4426BN without circuit modifications? A: Yes. MIC4426YN maintains identical electrical specifications including supply voltage (4.5V ~ 18V), logic voltage thresholds (0.8V, 2.4V), peak output currents (1.5A source and sink), and 8-PDIP package. The only differences are product status (active vs. obsolete) and RoHS compliance (RoHS3 vs. non-compliant).
Q: What is the difference between TC426CPA, TC4426CPA, and TC4426VPA? A: All three parts are Microchip Technology low-side gate drivers with identical supply voltage and output current specifications. The primary differences are operating temperature ranges: TC426CPA operates 0°C ~ 70°C, TC4426CPA operates 0°C ~ 70°C with faster switching (19ns vs. 30ns), and TC4426VPA extends to -40°C ~ 125°C. Rise and fall times for TC426CPA and TC426EPA are 30ns typical, while TC4426 variants are 19ns typical.
Q: Is IR4426PBF a suitable substitute for the MIC4426BN? A: IR4426PBF is electrically compatible with enhanced performance characteristics. It offers higher peak output currents (2.3A source, 3.3A sink vs. 1.5A), faster switching times (15ns, 10ns vs. 20ns, 29ns), and extended supply voltage range (6V ~ 20V vs. 4.5V ~ 18V). The 8-PDIP package is identical. However, verify that the higher output current and faster switching times do not introduce noise or EMI concerns in your specific application.
Q: Are all substitute parts available in the same 8-PDIP package? A: Yes. All substitute parts listed operate in the 8-DIP (0.300", 7.62mm) package with 8-PDIP supplier device package designation. Direct PCB board replacement is possible without layout modifications.
Q: Which substitute part offers the best compliance profile for new designs? A: MIC4426YN, TC426EPA, TC4426EPA, TC4426VPA, MAX4426EPA+, and ICL7667CPAZ all feature RoHS3 compliance and active product status. For Microchip-based designs, TC4426EPA provides the optimal balance of compliance, performance (19ns switching), and extended temperature range (-40°C ~ 85°C). For cross-manufacturer options, MAX4426EPA+ offers identical electrical specifications with Analog Devices support.
Q: What are the logic voltage threshold differences between substitutes? A: Most substitutes maintain the MIC4426BN's logic voltage thresholds (VIL 0.8V, VIH 2.4V). IR4426PBF specifies VIH at 2.7V, and ICL7667CPAZ specifies VIH at 2V. These variations remain within standard TTL/CMOS logic compatibility ranges and do not typically require circuit redesign.
Q: Can I use ICL7667CPAZ as a substitute if my application requires 18V supply operation? A: No. ICL7667CPAZ operates within a 4.5V ~ 15V supply range, which is narrower than the MIC4426BN's 4.5V ~ 18V specification. Applications requiring 18V operation must use MIC4426YN, TC426 variants, TC4426 variants, MAX4426 variants, or IR4426PBF.
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