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Texas Instruments SM72482MAE-4/NOPB
- Part No.:
- SM72482MAE-4/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SM72482MAE-4/NOPB.pdf
- Description:
- IC GATE DRVR LOW-SIDE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:484
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Product details
Overview
SM72482MAE-4/NOPB from Texas Instruments is a dual high-current compound gate driver IC designed for driving N-channel MOSFETs in high-efficiency power stages. 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 - deployed in synchronous rectifier and switch-mode power supply gate drive circuits.
For engineers reviewing the SM72482MAE-4/NOPB datasheet, SM72482MAE-4/NOPB pinout, SM72482MAE-4/NOPB application, or SM72482MAE-4/NOPB equivalent, key selection criteria include compound-output current stability across temperature, independent inverting/non-inverting configuration (IN_A inverting, IN_B non-inverting), SOIC-8 thermal performance (θJA = 170°C/W), and UVLO behavior locking OUT_A high and OUT_B low during undervoltage.
Technical Context
The SM72482MAE-4/NOPB implements two independent totem-pole output stages, each combining parallel MOS and bipolar transistors to minimize output current variation over voltage and temperature. Its compound architecture enables stable 5A sink capability even near MOSFET threshold voltages where bipolar devices dominate conduction.
UVLO is configured asymmetrically: OUT_A remains high while OUT_B is forced low when VCC–VEE drops below 2.9 V, enabling safe PFET/NFET control during brownout. Inputs are TTL-compatible with 1.75 V typical high-threshold and 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 5 V, 12 V, and 15 V gate drive rails without external regulation |
| Peak Sink Current | 5 A per channel - sufficient to rapidly discharge large MOSFET gate capacitances (e.g., >30 nC) at high switching frequencies |
| Peak Source Current | 3 A per channel - enables fast turn-on of N-channel MOSFETs with low gate resistance |
| Propagation Delay | 25 ns typical - ensures tight timing alignment between dual channels for interleaved or paralleled operation |
| Rise/Fall Time | 14 ns rise / 12 ns fall (2 nF load) - minimizes switching losses and EMI in high-frequency SMPS designs |
| UVLO Threshold | 2.9 V rising, 2.67 V falling - provides 230 mV hysteresis to prevent oscillation during supply sag |
| Input Thresholds | VIH = 2.2 V min, VIL = 0.8 V max - compatible with standard logic families including microcontrollers and PWM controllers |
Pinout & Package
SM72482MAE-4/NOPB uses an 8-pin SOIC (D) package with 1.27 mm pitch, 1.75 mm max height, and exposed pad not present. Pin 1 is located in quadrant Q1 per tape-and-reel orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 NC | No Connect | Unused; must remain unconnected to avoid parasitic coupling or latch-up risk |
| 2 IN_A | Inverting input for Channel A | TTL-compatible; drives OUT_A low when high, high when low - used for PFET control |
| 3 VEE | Power ground reference | Common return for inputs, outputs, and UVLO sensing - requires low-inductance PCB connection to system ground |
| 4 IN_B | Non-inverting input for Channel B | TTL-compatible; drives OUT_B high when high - used for NFET control |
| 5 OUT_B | Output for Channel B | Rail-to-rail swing (VCC to VEE); sinks 5 A / sources 3 A - directly drives NFET gate |
| 6 VCC | Positive output supply | Supplies both output stages; requires local 10 µF + 0.1 µF ceramic decoupling to VEE |
| 7 OUT_A | Output for Channel A | Rail-to-rail swing (VCC to VEE); sinks 5 A / sources 3 A - directly drives PFET gate |
| 8 NC | No Connect | Unused; must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Dual compound output stage | MOS + bipolar parallel topology reduces current variation vs. temperature/voltage - maintains consistent gate drive strength from −40°C to +125°C |
| Asymmetric UVLO response | OUT_A held high and OUT_B forced low during undervoltage - ensures complementary PFET/NFET turn-off in half-bridge configurations |
| Independent TTL-compatible inputs | VIH/VIL thresholds match standard logic; 400 mV hysteresis prevents false triggering from noise on IN_A/IN_B |
| Parallel operation support | Identical channel timing (±1 ns matching) allows IN_A+IN_B and OUT_A+OUT_B connection - doubles peak drive to 10 A sink / 6 A source |
| SOIC-8 thermal design | θJA = 170°C/W (natural convection) - enables 0.236 W total dissipation at 60°C ambient without heatsink in typical SMPS layouts |
Applications
| Synchronous Rectifier Gate Driver | Switch-Mode Power Supply Gate Driver |
|---|---|
Use Scenario: High-efficiency secondary-side rectification in isolated DC/DC converters operating at 100–500 kHz. IC Role / Device Role / Timing Role: Dual-channel gate driver controlling synchronous rectifier MOSFETs in forward or LLC topologies; OUT_A drives high-side PFET, OUT_B drives low-side NFET. Use Value: Compound output sustains 5A sink current across full temperature range, reducing conduction loss variance and improving light-load efficiency by >1.2% versus single-transistor drivers. | Use Scenario: Primary-side half-bridge or full-bridge gate drive in telecom and server PSUs requiring <30 ns timing skew. IC Role / Device Role / Timing Role: Dual non-overlapping gate driver with matched propagation delays; IN_A and IN_B driven by complementary PWM signals with dead-time insertion. Use Value: 25 ns typical td1/td2 and <1 ns inter-channel skew enable precise timing control, minimizing shoot-through risk and improving power stage efficiency at 300 kHz. |
| Solenoid and Motor Driver Interface | Renewable Energy Grade Inverter Stage |
Use Scenario: Low-voltage (<24 V) brushed DC motor or solenoid control in industrial actuators with PWM duty cycle modulation. IC Role / Device Role / Timing Role: High-current buffer translating MCU GPIO outputs to robust gate drive; OUT_A and OUT_B independently control H-bridge upper/lower FETs. Use Value: 3A source / 5A sink capability handles peak gate charge demands of 100–200 nC MOSFETs, enabling rapid direction reversal without gate drive starvation. | Use Scenario: Auxiliary gate drive in solar microinverters and battery storage systems requiring extended lifetime under thermal stress. IC Role / Device Role / Timing Role: Dual-channel driver for interleaved boost or buck-boost stages; operates continuously at TJ = 125°C with guaranteed UVLO hysteresis stability. Use Value: Renewable energy grade qualification ensures reliable operation over 15-year field life; UVLO hysteresis remains ≥230 mV from −40°C to +125°C, preventing erratic restart during grid fluctuations. |
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 | 3A sink/source, no compound output; higher current variation with temperature; no UVLO hysteresis spec | Lacks asymmetric UVLO - cannot safely drive PFET/NFET pair during brownout | Choose UCC27324DR only if symmetric output behavior and lower cost are prioritized over thermal stability and fail-safe UVLO |
| TC4427ACOA | 1.2A sink/source, CMOS-only output; 30 ns propagation delay; no integrated UVLO | Requires external UVLO circuitry; insufficient peak current for >50 nC MOSFETs above 200 kHz | Choose TC4427ACOA only for low-power, low-frequency (<100 kHz), cost-sensitive applications without safety-critical undervoltage behavior |
Compared with UCC27324DR and TC4427ACOA, SM72482MAE-4/NOPB uniquely combines 5A sink capability, compound-output thermal stability, and factory-configured asymmetric UVLO - making it the only option among the three qualified for renewable-energy-grade synchronous rectifier designs requiring guaranteed PFET/NFET turn-off during supply sag.
Availability
SM72482MAE-4/NOPB is available at Aetrix Electronics and suitable for synchronous rectifier gate drivers, switch-mode power supply gate drivers, and solenoid/motor drivers requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.
Supply support for SM72482MAE-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 company specializing in analog, embedded processing, and power management technologies, with over 50 years of leadership in high-reliability power IC design.
The SM72482 product line was developed specifically for high-efficiency, high-reliability gate drive in renewable energy and industrial power conversion systems - emphasizing thermal-stable compound output stages and fail-safe UVLO behavior.
FAQ
What is the UVLO behavior of SM72482MAE-4/NOPB during undervoltage conditions?
The SM72482MAE-4/NOPB features asymmetric UVLO: when VCC–VEE falls below 2.9 V, OUT_A is actively held high while OUT_B is forced low. This configuration ensures safe turn-off of both PFET (via OUT_A) and NFET (via OUT_B) in half-bridge topologies during brownout. The 230 mV hysteresis prevents chattering, and normal operation resumes once VCC–VEE exceeds ~3.0 V. This behavior is fixed for the MA-4 variant and confirmed in the SNVS696C datasheet.
Can SM72482MAE-4/NOPB drive both channels in parallel to increase output current?
Yes, SM72482MAE-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. Propagation delays are tightly matched (≤1 ns skew), and efficiency loss is <1% versus dual-channel mode. However, fast-rising/falling input signals are mandatory to avoid shoot-through; slow edges may cause transient overlap and increased power dissipation in the output stage.
What is the maximum continuous output current for SM72482MAE-4/NOPB?
SM72482MAE-4/NOPB is rated for 5 A sink / 3 A source peak current into capacitive loads, but continuous current is thermally limited. For SOIC-8 at 60°C ambient and natural convection (θJA = 170°C/W), maximum continuous sink current is ~391 mA and source current ~347 mA - calculated using RDS(on) = 2.5 Ω and VDIODE ≈ 1.1 V. Continuous operation above these values requires forced air cooling or derating per TI's thermal equations in SNVS696C Section 9.
Is SM72482MAE-4/NOPB pin-compatible with industry-standard gate drivers?
Yes, SM72482MAE-4/NOPB uses an industry-standard SOIC-8 footprint compatible with TC4426/27/28 and UCC27323/4/5. Pin assignments match functional roles: VEE (GND), VCC (VDD), IN_A/IN_B (inputs), OUT_A/OUT_B (outputs), and two NC pins. Layout files and stencil designs are provided in TI's D0008A package outline, confirming mechanical interoperability without PCB redesign.
What load capacitance does SM72482MAE-4/NOPB support with specified rise/fall times?
SM72482MAE-4/NOPB achieves 14 ns rise time and 12 ns fall time with a 2 nF capacitive load, as measured per Figure 2 and Figure 3 in SNVS696C. Performance degrades predictably with larger loads: rise/fall times scale approximately linearly with capacitance up to 2200 pF, and timing waveforms remain monotonic without ringing. For loads >2.2 nF, layout inductance and gate resistance become dominant factors - TI recommends verifying timing with actual MOSFET gate charge (QG) and RG in final design.
SM72482MAE-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 (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SM72482MAE-4/NOPB FAQ
1.How can I place an order for SM72482MAE-4/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for SM72482MAE-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 SM72482MAE-4/NOPB reliable?
The price and inventory of SM72482MAE-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 SM72482MAE-4/NOPB is usually 5 days.
3.What payment methods are accepted for SM72482MAE-4/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM72482MAE-4/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM72482MAE-4/NOPB?
SM72482MAE-4/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM72482MAE-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 SM72482MAE-4/NOPB?
For technical support, including SM72482MAE-4/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM72482MAE-4/NOPB requirements.
6.How does Aetrix verify that SM72482MAE-4/NOPB is sourced from the original manufacturer or authorized distributors?
All SM72482MAE-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 SM72482MAE-4/NOPB meets industry standards.
7.What is the process for return or replacement of SM72482MAE-4/NOPB?
All SM72482MAE-4/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with SM72482MAE-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 SM72482MAE-4/NOPB part is unused and in its original packaging.
Return procedure for SM72482MAE-4/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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