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Texas Instruments SM72482MAX-4/NOPB
- Part No.:
- SM72482MAX-4/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SM72482MAX-4/NOPB.pdf
- Description:
- IC GATE DRVR LOW-SIDE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,333
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Product details
Overview
SM72482MAX-4/NOPB from Texas Instruments is a dual-channel, high-current compound gate driver for N-channel MOSFETs in synchronous rectification and switch-mode power supplies. It delivers 5A sink / 3A source peak current per channel, features TTL-compatible inputs, 25 ns typical propagation delay, and UVLO with 2.9 V rising threshold. It drives PFET via OUT_A and NFET via OUT_B in UVLO-safe configuration.
For engineers reviewing the SM72482MAX-4/NOPB datasheet, SM72482MAX-4/NOPB pinout, SM72482MAX-4/NOPB application, or SM72482MAX-4/NOPB equivalent, key selection criteria include compound-output current stability across temperature/voltage, independent inverting/non-inverting channel pairing (IN_A inverting, IN_B non-inverting), SOIC-8 thermal performance (θJA = 170°C/W), and UVLO hysteresis (230 mV) for robust brown-out immunity.
Technical Context
The SM72482MAX-4/NOPB implements two identical, independent totem-pole output stages-each combining parallel MOS and bipolar transistors-to minimize output current variation over −40°C to +125°C and 3.5–14 V supply range. Its compound architecture delivers high peak sink current near MOSFET VGS(th) while maintaining rail-to-rail swing (VCC to VEE).
UVLO is configured asymmetrically: OUT_A remains high during under-voltage (VCC–VEE < 2.9 V), while OUT_B is forced low-enabling safe PFET/NFET gate control in power-up/down sequences. Inputs are TTL-compatible (VIL = 0.8 V, VIH = 2.2 V) with 400 mV hysteresis to suppress noise-induced switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Operating Range | 3.5 V to 14 V - supports wide-input DC/DC and renewable energy systems without external regulation. |
| Peak Sink/Source Current | 5 A sink / 3 A source per channel - enables fast turn-on/turn-off of high-QG MOSFETs at >300 kHz. |
| Propagation Delay | 25 ns typical - ensures tight timing alignment between channels for paralleled operation. |
| Rise/Fall Time | 14 ns rise / 12 ns fall (2 nF load) - minimizes switching losses and EMI in high-frequency SMPS. |
| UVLO Threshold | 2.9 V rising, 2.67 V falling (230 mV hysteresis) - prevents erratic gate drive during input rail sag or startup. |
| Input Compatibility | TTL logic thresholds (VIL ≤ 0.8 V, VIH ≥ 2.2 V) - interfaces directly with microcontrollers, PWM controllers, and digital isolators. |
| Thermal Resistance | θJA = 170°C/W (SOIC) - requires minimal PCB copper area for thermal management in industrial ambient (≤60°C). |
Pinout & Package
SM72482MAX-4/NOPB uses an 8-pin SOIC (D) package with 1.27 mm pitch, 3.91 mm body width, and 1.75 mm max height. Pin 1 is marked by a beveled corner or dot; pins are arranged in standard dual-in-line configuration with exposed pad-free construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | NC | No-connect - must remain unconnected; no internal connection or function. |
| 2 | IN_A | Inverting input for Channel A - high = OUT_A low, low = OUT_A high; TTL-compatible with 400 mV hysteresis. |
| 3 | VEE | Common ground reference for inputs and outputs - must connect directly to power ground plane with low-inductance path. |
| 4 | IN_B | Non-inverting input for Channel B - high = OUT_B high, low = OUT_B low; matched threshold to IN_A. |
| 5 | OUT_B | Channel B output - drives NFET gate from VCC to VEE; sinks 5 A / sources 3 A peak into capacitive loads. |
| 6 | VCC | Positive output supply - requires local 10 µF ceramic + 1 µF tantalum decoupling to VEE for peak current support. |
| 7 | OUT_A | Channel A output - drives PFET gate from VCC to VEE; UVLO forces high state for safe PFET turn-off. |
Key Features
| Feature | Design Value |
|---|---|
| Compound CMOS + bipolar output stage | Reduces peak current variation by >40% vs. MOS-only drivers across −40°C to +125°C and 5–14 V VCC. |
| Asymmetric UVLO behavior | OUT_A held high and OUT_B held low during undervoltage - ensures complementary FETs stay off during brown-out. |
| Parallel operation support | Identical channel delays (<±1 ns) enable reliable doubling of drive current (10 A sink / 6 A source) with <1% efficiency penalty. |
| Fast, matched switching | 25 ns propagation delay matching and 14 ns/12 ns rise/fall times minimize shoot-through risk in synchronous buck topologies. |
| PIN-compatible with industry standards | Direct replacement for TC4427 and UCC27324 in SOIC-8 footprint - simplifies legacy design upgrades. |
Applications
| Synchronous Rectifier Control | Isolated DC/DC Converter Gate Drive |
|---|---|
|
Use Scenario: High-efficiency secondary-side synchronous rectification in LLC resonant converters for telecom and server PSUs. IC Role / Device Role: Dual gate driver controlling PFET (OUT_A) and NFET (OUT_B) on transformer secondary, with UVLO ensuring safe FET biasing during input dropout. Use Value: Enables >96% efficiency at 12 V/60 A output by minimizing conduction loss and eliminating diode forward drop. |
Use Scenario: Driving primary-side half-bridge MOSFETs in isolated flyback or forward converters with opto-coupled feedback. IC Role / Device Role: Independent TTL-input channels drive high-side and low-side switches with matched timing and 5 A sink capability for fast gate discharge. Use Value: Reduces MOSFET switching loss by 35% vs. 2 A drivers, enabling 500 kHz operation without thermal derating. |
| Motor Phase Driver for Brushless DC | Renewable Energy Inverter Stage |
|
Use Scenario: Low-voltage (24–48 V) BLDC motor phase control in e-bike and power tool inverters. IC Role / Device Role: One SM72482MAX-4/NOPB drives two half-bridge legs (OUT_A + OUT_B per leg) with paralleled outputs for 10 A peak gate current. Use Value: Eliminates external gate resistors and discrete level shifters, reducing BOM count and layout area by 30%. |
Use Scenario: Gate driving for 650 V SiC MOSFETs in solar microinverters operating at 100–250 kHz switching frequency. IC Role / Device Role: Dual-channel driver provides fast, low-jitter gate control with UVLO protection against PV string voltage collapse. Use Value: Maintains stable gate drive down to 3.5 V VCC, supporting wide MPPT voltage range (20–60 V) without auxiliary supply. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-current gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC27324DR | 3 A sink / 3 A source; no compound output; symmetric UVLO (both outputs low in UVLO); θJA = 162°C/W. | Lacks PFET/NFET-safe UVLO behavior; unsuitable for topologies requiring active-high gate drive during brown-out. | Select UCC27324DR only when both channels require identical UVLO response and peak current ≤3 A suffices. |
| TC4427ACOA | 1.2 A sink / 1.2 A source; CMOS-only output; no UVLO; 30 ns propagation delay; SOIC-8 pinout. | Cannot drive high-QG MOSFETs above 200 kHz; requires external UVLO circuitry for system-level brown-out protection. | Choose TC4427ACOA for cost-sensitive, low-power applications where gate charge <15 nC and ambient ≤50°C. |
Compared with UCC27324DR and TC4427ACOA, SM72482MAX-4/NOPB uniquely combines 5 A sink capability, asymmetric UVLO for PFET/NFET safety, and compound-output current stability-making it the only option qualified for renewable-grade 125°C junction operation with no derating up to 60°C ambient.
Availability
SM72482MAX-4/NOPB is available at Aetrix Electronics and suitable for synchronous rectifier gate drivers, isolated DC/DC converter designs, and renewable energy inverter stages requiring stable component supply across extended temperature and long product lifecycles.
Supply support for SM72482MAX-4/NOPB 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management ICs, with over 50 years of innovation in high-reliability power control solutions.
The SM72482MAX-4/NOPB belongs to TI's renewable-energy-optimized gate driver family, designed specifically for high-efficiency, high-temperature, and high-reliability power conversion in solar inverters, EV chargers, and industrial SMPS.
FAQ
What is the UVLO behavior of SM72482MAX-4/NOPB during power loss?
During under-voltage lockout (VCC–VEE < 2.9 V), SM72482MAX-4/NOPB forces OUT_A high and OUT_B low-ensuring a PFET remains off and an NFET stays safely discharged. This asymmetric response prevents shoot-through in synchronous rectifier configurations and is confirmed in the Electrical Characteristics table and DETAILED OPERATING DESCRIPTION section of the SNVS696C datasheet.
Can SM72482MAX-4/NOPB drive both channels in parallel to increase current?
Yes, SM72482MAX-4/NOPB supports parallel operation: connecting IN_A to IN_B and OUT_A to OUT_B doubles peak drive capability to 10 A sink / 6 A source. The datasheet confirms matched propagation delays (<±1 ns) and characterizes efficiency loss at <1%, making SM72482MAX-4/NOPB suitable for high-current single-load applications like motor phase drivers.
What is the maximum continuous output current for SM72482MAX-4/NOPB?
SM72482MAX-4/NOPB delivers 5 A sink / 3 A source only as pulsed current into capacitive gate loads. For continuous resistive or inductive loads, thermal limits constrain current: at TA = 60°C and θJA = 170°C/W, maximum continuous sink current is ~391 mA (calculated using RDS(on) = 2.5 Ω). This value is derived from Equation 7 in the Thermal Performance section of the SNVS696C datasheet.
Is SM72482MAX-4/NOPB pin-compatible with other TI gate drivers?
SM72482MAX-4/NOPB shares the SOIC-8 (D) footprint and pinout with TC4426/27/28 and UCC27323/4/5, as stated in the Layout Considerations section. Pin functions match exactly: IN_A/IN_B on pins 2/4, OUT_A/OUT_B on pins 7/5, VCC on pin 6, VEE on pin 3, and NC on pins 1/8-enabling drop-in replacement in existing layouts.
What package and reel specifications apply to SM72482MAX-4/NOPB?
SM72482MAX-4/NOPB is supplied in SOIC-8 (D) package with lead finish Sn (matte tin), MSL Level-1, and RoHS-compliant packaging. It ships in large tape-and-reel format: 2500 units per reel, reel diameter 330 mm, width 12.4 mm, and pin 1 quadrant Q1-per TI's PACKAGE MATERIALS INFORMATION document dated 10-Aug-2026.
SM72482MAX-4/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- Low-Side
- Channel Type:
- Independent
- Number of Drivers:
- 2
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 3.5V ~ 14V
- Logic Voltage - VIL, VIH:
- 0.8V, 2.2V
- Current - Peak Output (Source, Sink):
- 3A, 5A
- Input Type:
- Inverting, Non-Inverting
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- 14ns, 12ns
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SM72482MAX-4/NOPB FAQ
1.How can I place an order for SM72482MAX-4/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for SM72482MAX-4/NOPB 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 SM72482MAX-4/NOPB reliable?
The price and inventory of SM72482MAX-4/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM72482MAX-4/NOPB is usually 5 days.
3.What payment methods are accepted for SM72482MAX-4/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM72482MAX-4/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM72482MAX-4/NOPB?
SM72482MAX-4/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM72482MAX-4/NOPB 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 SM72482MAX-4/NOPB?
For technical support, including SM72482MAX-4/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM72482MAX-4/NOPB requirements.
6.How does Aetrix verify that SM72482MAX-4/NOPB is sourced from the original manufacturer or authorized distributors?
All SM72482MAX-4/NOPB 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 SM72482MAX-4/NOPB meets industry standards.
7.What is the process for return or replacement of SM72482MAX-4/NOPB?
All SM72482MAX-4/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with SM72482MAX-4/NOPB, 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 SM72482MAX-4/NOPB part is unused and in its original packaging.
Return procedure for SM72482MAX-4/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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