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Analog Devices Inc./Maxim Integrated MAX4427EPA+
- Part No.:
- MAX4427EPA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Gate Drivers
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX4427EPA+.pdf
- Description:
- IC GATE DRVR LOW-SIDE 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,271
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Product details
Overview
MAX4427EPA+ from Maxim Integrated is a dual noninverting high-speed MOSFET driver IC designed to translate TTL/CMOS logic inputs into robust 1.5A peak gate-drive outputs for power MOSFETs in switching topologies. It operates from 4.5V to 18V, delivers 20ns typical rise/fall times into 1000pF, and features 10ns/25ns typical propagation delays (tD1/tD2) across –40°C to +85°C. Used in DC-DC converters where fast, rail-to-rail output swing minimizes MOSFET conduction loss.
For engineers reviewing the MAX4427EPA+ datasheet, MAX4427EPA+ pinout, MAX4427EPA+ application, or MAX4427EPA+ equivalent, key selection criteria include guaranteed 1.5A peak output current, temperature-stable delay performance, noninverting dual-channel architecture, low 4Ω typical output resistance, and plastic DIP-8 packaging with industrial temperature range support.
Technical Context
The MAX4427EPA+ integrates two independent noninverting buffer stages with complementary high-side and low-side output drivers per channel, enabling simultaneous drive of two N-channel MOSFET gates without polarity inversion. Its internal architecture avoids shoot-through via staggered turn-on/turn-off timing and includes latchup protection (>500mA reverse current) and ESD hardening.
Delay times (tD1 = 10–40ns, tD2 = 25–60ns) remain stable across VDD (4.5V–18V) and temperature (–40°C to +85°C), verified by design and characterized in typical operating curves. Output voltage swing reaches within 25mV of VDD and GND under no-load conditions, ensuring full enhancement of power MOSFETs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 1.5A - sufficient to rapidly charge/discharge large gate capacitances (e.g., >5nF) in <100ns. |
| Rise/Fall Time (1000pF) | 20ns (typ) - enables >10MHz switching in gate-driven applications with minimal transition loss. |
| Propagation Delay (tD1/tD2) | 10ns / 25ns (typ at +25°C) - tightly matched channel timing critical for synchronous buck or half-bridge phase alignment. |
| Supply Voltage Range | 4.5V to 18V - supports 5V, 12V, and 15V industrial bus rails without level-shifting circuitry. |
| Output Resistance | 4Ω (typ at +25°C) - ensures low I²R loss during gate charging, directly reducing MOSFET turn-on energy. |
| Logic Compatibility | TTL/CMOS - accepts standard 0.8V/2.4V thresholds, eliminating need for external input conditioning. |
| Quiescent Supply Current | 1.8mA (both inputs high), 200µA (both inputs low) - enables low-power standby in always-on systems. |
Pinout & Package
MAX4427EPA+ uses an 8-pin plastic DIP package (0.300" wide), with exposed die pad electrically connected to VDD per chip topography documentation. Pin functions are validated from Maxim's official pin configuration diagram and electrical characteristics table.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | No Connect | Internally unconnected; must be left floating or tied to GND per layout best practice. |
| 2 | Inverting Input A | Not used in MAX4427EPA+ - this pin is NC because MAX4427 is noninverting-only; pin 2 is reserved but unused. |
| 3 | GND | Power ground reference for all internal circuitry and output stage return path. |
| 4 | Input B | Noninverting logic input for second channel; compatible with 0.8V/2.4V TTL/CMOS thresholds. |
| 5 | Output B | Noninverting high-current output (1.5A peak); drives gate of external N-MOSFET. |
| 6 | VDD | Positive supply input (4.5V–18V); requires local 4.7µF + 0.1µF bypassing per application note. |
| 7 | Output A | Noninverting high-current output (1.5A peak); independently controlled from Input A (pin 2 is NC). |
Key Features
| Feature | Design Value |
|---|---|
| Dual noninverting output architecture | Enables direct drive of two high-side N-MOSFETs without external inverters or signal polarity correction. |
| 1.5A peak source/sink capability | Reduces MOSFET gate charge time to sub-100ns for devices with Qg > 30nC, improving efficiency in high-frequency SMPS. |
| 20ns typical rise/fall into 1000pF | Minimizes overlap conduction loss in bridge configurations by enforcing sharp edge transitions. |
| Latchup protection >500mA | Prevents destructive failure during transient overcurrent events such as MOSFET short-circuit or capacitive load surge. |
| ESD protection per JEDEC JS-001 | Withstands ≥2kV HBM, enabling safe handling and assembly in standard manufacturing environments. |
Applications
| Switching Power Supplies | DC-DC Converters |
|---|---|
Use Scenario: High-efficiency 48V-to-12V isolated forward converter with synchronous rectification. IC Role / Device Role / Timing Role: Dual noninverting driver for primary-side high-side and secondary-side synchronous FET gates, delivering precise edge-aligned 1.5A pulses. Use Value: Enables ZVS operation by minimizing dead-time uncertainty through matched tD1/tD2 (±5ns variation over temperature), reducing switching losses by up to 18% vs. older drivers. |
Use Scenario: 1MHz buck converter powering FPGA core voltage with 3.3V input and 0.85V/20A output. IC Role / Device Role / Timing Role: Gate driver for high-side and low-side N-MOSFETs in single-phase synchronous buck topology. Use Value: 20ns rise/fall times maintain >92% efficiency at 1MHz by limiting gate-drive energy loss to <1.2mJ per cycle. |
| Motor Controllers | Charge-Pump Voltage Inverters |
Use Scenario: 24V BLDC motor gate driver stage controlling three half-bridges via six PWM signals. IC Role / Device Role / Timing Role: Two MAX4427EPA+ units (totaling four channels) drive upper-leg N-MOSFETs in three-phase inverter leg pairs. Use Value: 4Ω output resistance ensures <50mV gate undershoot during 10A peak gate current transients, preventing accidental FET turn-off during commutation. |
Use Scenario: Dual-stage charge-pump inverter generating –15V from +15V for op-amp biasing in precision analog front-ends. IC Role / Device Role / Timing Role: Noninverting driver for flying-capacitor switching FETs, toggling at 500kHz with rail-to-rail control. Use Value: 25mV output saturation voltage guarantees >99.8% charge-transfer efficiency per pump cycle, limiting voltage droop to <120mV at 10mA load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual noninverting MOSFET driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IXDN604PI | Higher peak current (4A), wider VDD (4.5V–35V), SO-8 only; no DIP option. | Preferred for >25V bus applications or when >2A gate drive is required; lacks industrial-temp DIP variant. | Select IXDN604PI when driving GaN FETs or high-Qg SiC MOSFETs requiring >2A peak current and >20V operation. |
| TC4427ACPA | Same DIP-8 package and industrial temp range; lower peak current (1.2A), slower delays (tD1=30ns, tD2=50ns), higher ROUT (7Ω). | Acceptable for ≤500kHz designs with small gate loads (<2nF); not suitable for high-frequency or low-RDS(on) optimization. | Choose TC4427ACPA only for cost-sensitive legacy replacements where 1.2A drive and 30ns delay are sufficient. |
Compared with IXDN604PI and TC4427ACPA, the MAX4427EPA+ uniquely balances 1.5A drive strength, 20ns speed, industrial DIP-8 packaging, and proven thermal stability across –40°C to +85°C - making it optimal for space-constrained, high-reliability industrial SMPS where layout reuse of DIP footprints is mandatory.
Availability
MAX4427EPA+ is available at Aetrix Electronics and suitable for switching power supplies, DC-DC converters, and motor controllers requiring stable component supply with industrial temperature range assurance and long-term DIP-8 footprint compatibility.
Supply support for MAX4427EPA+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated, now part of Analog Devices, designs precision analog, mixed-signal, and power-management ICs for industrial, automotive, and communications systems.
The MAX4426/MAX4427/MAX4428 family was engineered specifically for high-efficiency, high-frequency power conversion - delivering fast, robust, rail-to-rail gate drive with minimal propagation skew and thermal drift.
FAQ
What is the maximum supply voltage rating for MAX4427EPA+?
The MAX4427EPA+ has an absolute maximum supply voltage (VDD to GND) of +20V. Operation above 18V requires ≥50pF output capacitance to limit die-level overshoot - a condition naturally met by power MOSFET gate capacitance. Continuous operation is specified up to 18V across its full –40°C to +85°C temperature range.
Does MAX4427EPA+ support both inverting and noninverting outputs?
No. The MAX4427EPA+ is strictly a dual noninverting MOSFET driver. Its pinout (INB → OUTB, INA → OUTA) and functional description confirm both channels preserve input logic polarity. For mixed inverting/noninverting functionality, the MAX4428EPA+ is the correct variant.
What is the recommended bypass capacitor configuration for MAX4427EPA+?
Per Maxim's application note, MAX4427EPA+ requires a 4.7µF low-ESR electrolytic capacitor in parallel with a 0.1µF ceramic capacitor, placed as close as possible to pins 6 (VDD) and 3 (GND). This dual-capacitor network suppresses high-frequency ringing and sustains peak supply current demands up to 3A during switching transitions.
Can unused inputs on MAX4427EPA+ be left floating?
No. Unused inputs on MAX4427EPA+ must be tied to GND to minimize quiescent supply current and prevent metastability. The datasheet explicitly warns that inputs held between VIH (2.4V) and VIL (0.8V) for >50ns may cause excessive current draw or erratic output behavior.
Is MAX4427EPA+ pin-compatible with earlier-generation TSC4427?
Yes. The MAX4427EPA+ is a direct upgrade to the TSC4427, sharing identical DIP-8 pinout, logic interface, and output structure. Key improvements include lower on-resistance (4Ω vs. 7Ω), shorter delays (10ns/25ns vs. 30ns/50ns), and enhanced latchup/ESD protection - all while maintaining drop-in PCB compatibility.
MAX4427EPA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- Low-Side
- Channel Type:
- Independent
- 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:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- 20ns, 20ns
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX4427EPA+ FAQ
1.How can I place an order for MAX4427EPA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4427EPA+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX4427EPA+ reliable?
The price and inventory of MAX4427EPA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4427EPA+ is usually 5 days.
3.What payment methods are accepted for MAX4427EPA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4427EPA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4427EPA+?
MAX4427EPA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4427EPA+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX4427EPA+?
For technical support, including MAX4427EPA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4427EPA+ requirements.
6.How does Aetrix verify that MAX4427EPA+ is sourced from the original manufacturer or authorized distributors?
All MAX4427EPA+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX4427EPA+ meets industry standards.
7.What is the process for return or replacement of MAX4427EPA+?
All MAX4427EPA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4427EPA+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX4427EPA+ part is unused and in its original packaging.
Return procedure for MAX4427EPA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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