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Texas Instruments LM5134AMFX/NOPB
- Part No.:
- LM5134AMFX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- SOT-23-6
- Datasheet:
-
LM5134AMFX/NOPB.pdf
- Description:
- IC GATE DRVR LOW-SIDE SOT23-6
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM5134AMFX/NOPB from Texas Instruments is a single-channel low-side gate driver IC with dual complementary outputs (OUT and PILOT), delivering 7.6-A peak sink / 4.5-A peak source current on OUT and 820-mA / 660-mA on PILOT, operating from 4-V to 12.6-V supply, and rated for –40°C to +125°C junction temperature - used to drive high-speed power MOSFETs in motor control and PFC converters.
For engineers reviewing the LM5134AMFX/NOPB datasheet, LM5134AMFX/NOPB pinout, LM5134AMFX/NOPB application, or LM5134AMFX/NOPB equivalent, key selection criteria include verified PILOT/OUT timing coordination (tPD-ON = 4.2 ns, tPD-OFF = 6.4 ns at VDD = 10 V), TTL/CMOS logic compatibility with 14-V absolute input rating, UVLO with 3.25-V threshold, and SOT-23-6 package thermal resistance of 105.9°C/W.
Technical Context
The LM5134AMFX/NOPB implements a dual-output architecture where the main OUT pin drives the power FET gate directly, while the complementary PILOT output controls an external turnoff MOSFET placed near the power device to minimize gate-loop inductance. Its internal UVLO circuit clamps OUT below 1 V when VDD drops below 3.25 V, ensuring safe FET disablement under brownout conditions.
It supports both inverting (INB) and non-inverting (IN) logic inputs with CMOS-compatible thresholds (VIH = 0.67×VDD, VIL = 0.33×VDD), and features matched propagation delays between input paths. The device uses a PNP clamp transistor in parallel with the NMOS pull-up to guarantee low-impedance OFF-state behavior during undervoltage events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Sink Current (OUT) | 7.6 A - enables fast discharge of large gate capacitances (e.g., >10 nF) for sub-20 ns MOSFET turnoff in hard-switching PFC stages |
| Peak Source Current (OUT) | 4.5 A - supports rapid gate charging of high-Qg MOSFETs (e.g., 87 nC) with margin for PCB trace inductance effects |
| PILOT Output Delay (tPD-ON) | 4.2 ns (VDD = 10 V, CL = 330 pF) - ensures precise sequencing to activate external turnoff FET before main FET turns off, preventing shoot-through |
| UVLO Threshold | 3.25 V (min) - guarantees reliable disablement before gate drive voltage falls below MOSFET threshold, avoiding partial conduction |
| Logic Input Voltage Range | –0.3 V to 14 V - allows direct interface with 3.3-V microcontrollers, 5-V logic, and 12-V analog PWM controllers without level shifters |
| Supply Voltage Range | 4 V to 12.6 V - compatible with 5-V, 10-V, and 12-V gate bias rails used for Si MOSFETs and GaN HEMTs |
| Junction Temperature Range | –40°C to +125°C - validated for industrial motor drives and continuous-duty PFC modules with ambient up to 85°C |
Pinout & Package
LM5134AMFX/NOPB is packaged in a 6-pin SOT-23 (DBV) with 2.90 mm × 1.60 mm body size and exposed pad for thermal enhancement. Pin 1 is VDD; Pin 2 is PILOT; Pin 3 is OUT; Pin 4 is VSS; Pin 5 is INB (inverting input); Pin 6 is IN (non-inverting input).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Gate drive supply input | Must be locally decoupled to VSS with low-ESR/ESL capacitor; powers both output stages and logic core |
| PILOT (Pin 2) | Complementary gate drive output | Drives external turnoff MOSFET; timing offset relative to OUT prevents shoot-through during transition |
| OUT (Pin 3) | Main low-side gate drive output | Directly drives power FET gate; 7.6-A sink capability minimizes Miller plateau time in high-dV/dt switching |
| VSS (Pin 4) | Power ground reference | All internal signals referenced here; must connect to low-impedance PCB ground plane beneath exposed pad |
| INB (Pin 5) | Inverting logic input | Active-high signal produces low OUT; tie to VSS if unused to prevent floating input |
| IN (Pin 6) | Non-inverting logic input | Active-high signal produces high OUT; tie to VDD if unused to ensure defined state |
Key Features
| Feature | Design Value |
|---|---|
| Dual complementary outputs (OUT + PILOT) | Enables local turnoff path via external FET, reducing gate-loop inductance by >50% versus single-output drivers |
| Matched input delay paths | Ensures identical propagation from IN and INB to OUT, supporting flexible inverting/non-inverting configurations without skew |
| Integrated UVLO with PNP clamp | Forces OUT ≤1 V during undervoltage, eliminating risk of partial FET turn-on and shoot-through in cascaded topologies |
| 14-V absolute input rating | Permits direct connection to 12-V PWM controllers or isolated gate drive transformers without external protection diodes |
| Thermally enhanced SOT-23 | Exposed pad lowers RθJA to 105.9°C/W, enabling 1.2-W continuous dissipation at 85°C ambient without heatsink |
Applications
| Motor Drivers | Solid-State Power Controllers |
|---|---|
|
Use Scenario: Driving N-channel MOSFET half-bridge in 24-V BLDC motor controller with 50-kHz PWM and <100-ns dead-time requirements. IC Role / Device Role / Timing Role: Low-side gate driver providing fast, sequenced turnoff via PILOT-controlled auxiliary FET to suppress Miller-induced false turnon during high-dV/dt commutation. Use Value: Achieves <15 ns effective turnoff delay (tD-OFF + tPD-ON) and eliminates gate ringing observed with single-output drivers under 40-V/ns dV/dt. |
Use Scenario: Solid-state relay replacement in industrial HVAC load switching, controlling 40-A resistive heater banks with zero-crossing sync. IC Role / Device Role / Timing Role: High-current gate driver interfacing MCU GPIO to power MOSFET array, using INB for hardware emergency disable independent of firmware state. Use Value: Delivers 7.6-A sink current to fully discharge parallel MOSFET gates within 50 ns, enabling <100-µs turnoff response for safety-critical shutdown. |
| Power Factor Correction Converters | High-Frequency DC-DC Converters |
|
Use Scenario: Boost PFC stage in 1-kW telecom rectifier operating at 100 kHz with SiC MOSFETs requiring precise gate control at 12-V VDD. IC Role / Device Role / Timing Role: Dual-output driver coordinating main switch turnoff and auxiliary turnoff FET activation to suppress dv/dt-induced oscillations in high-frequency boost inductor current ripple. Use Value: Reduces EMI emissions by 8 dBµV in 30–100 MHz band via minimized gate loop inductance and controlled Miller plateau collapse. |
Use Scenario: GaN-based 48-V to 12-V point-of-load converter with 1-MHz switching, where gate drive loss dominates efficiency at light load. IC Role / Device Role / Timing Role: Low-side driver supplying 4.5-A peak source current to charge GaN gate rapidly while maintaining <6.4 ns tPD-OFF to avoid overlap with high-side driver. Use Value: Enables >95% efficiency at 20% load by minimizing gate charge time and reducing driver conduction loss vs. discrete buffer solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-side gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC27524ADRV | Single 5-A sink / 5-A source output; no PILOT output; 13-V max VDD; 15-ns typical tD-OFF | Lacks complementary PILOT channel - requires external circuitry for local turnoff path; better suited for standard half-bridge where layout inductance is controlled | Select when dual-output sequencing is unnecessary and board space favors 5-pin SON package over 6-pin SOT-23 |
| LM5114MFX/NOPB | Single 1.5-A sink / 1.5-A source output; no PILOT; 12-V max VDD; 25-ns tD-OFF; designed for high-side bootstrap use | Lower drive strength and slower timing - insufficient for >500-kHz SiC/GaN switching or multi-MOSFET paralleling | Select only for cost-sensitive 100–300 kHz Si MOSFET applications where PILOT functionality and 7.6-A drive are not required |
Compared with UCC27524ADRV and LM5114MFX/NOPB, LM5134AMFX/NOPB uniquely delivers coordinated dual-output timing for ultra-low-inductance turnoff, making it the only option among the three that eliminates false turnon in high-dV/dt, high-frequency power stages without added components.
Availability
LM5134AMFX/NOPB is available at Aetrix Electronics and suitable for motor drivers, solid-state power controllers, and power factor correction converters requiring stable component supply, long-term industrial lifecycle support, and guaranteed traceable sourcing.
Supply support for LM5134AMFX/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 headquartered in Dallas, Texas, designing and manufacturing analog ICs, embedded processors, and high-reliability power management solutions for industrial, automotive, and communications markets.
LM5134AMFX/NOPB belongs to TI's high-performance gate driver product line, engineered specifically for demanding power conversion applications requiring fast, robust, and thermally efficient MOSFET gate control with integrated safety features like UVLO and shoot-through prevention.
FAQ
What is the function of the PILOT output on the LM5134AMFX/NOPB?
The PILOT output on the LM5134AMFX/NOPB provides a complementary gate drive signal timed to activate an external turnoff MOSFET placed physically close to the main power FET. This configuration reduces gate-loop inductance during turnoff, suppressing Miller-induced false turnon and improving EMI performance. LM5134AMFX/NOPB specifies tPD-ON = 4.2 ns (VDD = 10 V) to ensure precise sequencing between PILOT activation and OUT deactivation.
Does the LM5134AMFX/NOPB support both inverting and non-inverting logic inputs?
Yes, the LM5134AMFX/NOPB supports both configurations via dedicated IN (non-inverting) and INB (inverting) inputs. When using IN, a high logic level produces high OUT; when using INB, a high logic level produces low OUT. The truth table in the LM5134AMFX/NOPB datasheet confirms identical propagation delay for both paths, enabling flexible system-level polarity matching without timing skew.
What is the minimum VDD supply voltage required for reliable operation of the LM5134AMFX/NOPB?
The LM5134AMFX/NOPB requires a minimum VDD of 4 V for normal operation, with undervoltage lockout (UVLO) releasing at 3.25 V (min) across temperature. Below this threshold, the internal PNP clamp forces OUT ≤1 V regardless of input state, ensuring fail-safe FET disablement. Operation at 4 V delivers reduced but functional 4.5-A peak source current and 7.6-A sink current per LM5134AMFX/NOPB electrical characteristics.
Can the LM5134AMFX/NOPB drive GaN HEMTs effectively?
Yes, the LM5134AMFX/NOPB is suitable for driving enhancement-mode GaN HEMTs requiring low gate threshold voltages (e.g., 1.2–1.8 V) and fast switching. Its 4.5-A peak source and 7.6-A peak sink currents, combined with <20 ns propagation delays and 4-V minimum VDD, meet critical GaN gate drive requirements. LM5134AMFX/NOPB's PILOT output further enhances reliability by enabling localized turnoff to suppress dv/dt-induced gate oscillation.
How does the LM5134AMFX/NOPB handle undervoltage conditions?
The LM5134AMFX/NOPB incorporates an integrated UVLO circuit that disables normal output operation when VDD falls below 3.25 V (min). During UVLO, the IN and INB inputs are ignored, and the OUT pin is actively clamped to ≤1 V via an internal PNP transistor - not just high-impedance - ensuring the driven MOSFET remains fully off even with marginal supply. This behavior is explicitly characterized in the LM5134AMFX/NOPB datasheet Section 6.5.
LM5134AMFX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- Low-Side
- Channel Type:
- Single
- Number of Drivers:
- 1
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 4V ~ 12.6V
- Logic Voltage - VIL, VIH:
- -
- Current - Peak Output (Source, Sink):
- 4.5A, 7.6A
- Input Type:
- Inverting, Non-Inverting
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- 3ns, 2ns
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
LM5134AMFX/NOPB FAQ
1.How can I place an order for LM5134AMFX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM5134AMFX/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 LM5134AMFX/NOPB reliable?
The price and inventory of LM5134AMFX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM5134AMFX/NOPB is usually 5 days.
3.What payment methods are accepted for LM5134AMFX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM5134AMFX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM5134AMFX/NOPB?
LM5134AMFX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM5134AMFX/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 LM5134AMFX/NOPB?
For technical support, including LM5134AMFX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM5134AMFX/NOPB requirements.
6.How does Aetrix verify that LM5134AMFX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM5134AMFX/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 LM5134AMFX/NOPB meets industry standards.
7.What is the process for return or replacement of LM5134AMFX/NOPB?
All LM5134AMFX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM5134AMFX/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 LM5134AMFX/NOPB part is unused and in its original packaging.
Return procedure for LM5134AMFX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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