Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Gate Drivers

Texas Instruments LM5111-1M/NOPB

Name: LM5111-1M/NOPB
Brand: Texas Instruments
SKU: LM5111-1M/NOPB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: LM5111-1M/NOPB

Manufacturer:: Texas Instruments

Category:: Gate Drivers

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: LM5111-1M/NOPB.pdf

Description:: IC GATE DRVR LOW-SIDE 8SOIC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:415

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

LM5111-1M/NOPB from Texas Instruments is a dual-channel noninverting MOSFET gate driver IC designed for high-speed, high-current switching in low-side N-channel power stages. It delivers 3-A source and 5-A sink peak current per channel, features TTL-compatible inputs, 25-ns typical propagation delay, and operates from 3.5 V to 14 V supply rails. It is used in synchronous rectifier and switch-mode power supply gate drive applications where fast, robust gate control is required.

For engineers reviewing the LM5111-1M/NOPB datasheet, LM5111-1M/NOPB pinout, LM5111-1M/NOPB application, or LM5111-1M/NOPB equivalent, key selection criteria include UVLO threshold (2.9 V rising), matched dual-channel timing, compound bipolar-MOS output architecture for stable drive across temperature, and SOIC-8 or MSOP-PowerPAD package thermal performance.

Technical Context

The LM5111-1M/NOPB implements two independent, identical totem-pole output stages combining MOS and bipolar transistors in parallel-enabling rail-to-rail swing (VCC to VEE) while maintaining high peak sink current (5 A) near MOSFET threshold voltage. Its TTL-compatible inputs (VIH = 2.2 V, VIL = 0.8 V) support direct interface with PWM controllers and microcontrollers.

Undervoltage lockout disables both outputs when VCC–VEE falls below 2.9 V (rising), with 230-mV hysteresis; during UVLO, LM5111-1M/NOPB holds both OUTA and OUTB low. The device supports parallel operation of channels to double drive current, with tightly matched propagation delays (<5 ns typical mismatch) enabling synchronized single-load driving without shoot-through risk under fast input transitions.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC Operating Range	3.5 V to 14 V - Supports common gate-drive supplies (5 V, 12 V) with 1-V margin below absolute max (15 V).
Peak Sink/Source Current	5 A sink / 3 A source per channel - Enables rapid charging/discharging of large MOSFET gate charges (e.g., >100 nC) at high frequencies.
Propagation Delay	25 ns typical (IN to OUT, 2-nF load) - Ensures tight timing control in <1-MHz SMPS designs with minimal duty-cycle distortion.
Rise/Fall Time	14 ns rise / 12 ns fall (2-nF load) - Minimizes switching transition losses and EMI generation in high-di/dt power stages.
UVLO Threshold	2.9 V (rising), 2.67 V (falling) - Prevents erratic gate drive during brownout; ensures clean startup/shutdown sequencing.
Input Thresholds	VIH = 2.2 V, VIL = 0.8 V - Direct compatibility with 3.3-V and 5-V logic families without level-shifting.
Thermal Resistance (SOIC)	θJA = 112.2 °C/W - Enables ~1.1 W continuous dissipation at TA = 85 °C before reaching TJ(max) = 125 °C.

Pinout & Package

LM5111-1M/NOPB is available in SOIC-8 (5.00 mm × 6.00 mm) and MSOP-PowerPAD-8 (3.00 mm × 4.90 mm) packages. The exposed thermal pad on MSOP-PowerPAD must be soldered to PCB ground for optimal thermal performance.

Pin/Terminal	Circuit Role	Design Meaning
1, 8 - NC	No Connection	Unbonded pins; must remain unconnected and unstubbed to avoid parasitic coupling or mechanical stress.
2 - IN_A	Channel A Input	TTL-compatible control signal for OUT_A; noninverting logic (high IN_A → high OUT_A).
3 - VEE	Ground Reference	Common return for inputs and outputs; must connect directly to power ground plane with low-inductance path.
4 - IN_B	Channel B Input	TTL-compatible control signal for OUT_B; noninverting logic (high IN_B → high OUT_B).
5 - OUT_B	Channel B Output	High-current totem-pole output (VCC to VEE); drives gate of low-side N-MOSFET or IGBT emitter.
6 - VCC	Positive Supply	Bias rail for output stage; requires local 0.1-µF ceramic + 1-µF bulk capacitor between VCC and VEE.
7 - OUT_A	Channel A Output	High-current totem-pole output (VCC to VEE); electrically identical to OUT_B; supports parallel connection.

Key Features

Feature	Design Value
Compound CMOS/Bipolar Output Stage	Combines MOS (rail-to-rail swing) and bipolar (high peak current near VGS(th)) devices to maintain stable drive across voltage/temperature.
Dual Noninverting Configuration (LM5111-1)	Both outputs follow input polarity - simplifies control logic in dual low-side topologies (e.g., half-bridge synchronous rectifiers).
UVLO with Hysteresis	2.9 V turn-on / 2.67 V turn-off prevents oscillation during supply ramp-up/down; outputs held low in fault condition.
Parallel Channel Operation	IN_A+IN_B tied, OUT_A+OUT_B tied yields 6-A source / 10-A sink capability - enables single high-current gate drive without external combiners.
PIN-Compatible with Industry Standards	Pinout matches TC4426/27/28 and UCC27323/4/5 - allows drop-in replacement in existing layouts using SOIC-8 footprint.

Applications

Synchronous Rectifier Gate Drive	Switch-Mode Power Supply Driver
Use Scenario: Driving parallel low-side N-MOSFETs in secondary-side synchronous rectification of isolated DC-DC converters (e.g., LLC, forward, flyback). IC Role / Device Role / Timing Role: Dual-channel gate driver providing simultaneous, matched-turn-on signals to multiple MOSFETs with sub-30-ns propagation matching. Use Value: Reduces conduction losses by replacing Schottky diodes; compound output maintains >4-A effective drive even at 125 °C junction temperature.	Use Scenario: Buffering PWM outputs from controllers (e.g., UC384x, TL494) to drive primary-side MOSFETs in boost, buck, or half-bridge topologies. IC Role / Device Role / Timing Role: High-current gate buffer isolating noise-sensitive controller from high-di/dt power stage; supports >500-kHz switching. Use Value: 5-A sink current rapidly discharges gate capacitance, minimizing Miller plateau time and improving efficiency at high frequency.
Solenoid and Motor Driver Interface	High-Speed Digital Load Switching
Use Scenario: Driving gate of N-channel power MOSFETs controlling 12-V/24-V solenoids or brushed DC motors in industrial actuators. IC Role / Device Role / Timing Role: Robust logic-level translator and current amplifier interfacing microcontroller GPIO to inductive loads. Use Value: TTL-compatible inputs tolerate noisy industrial environments; UVLO prevents partial turn-on during undervoltage faults.	Use Scenario: Fast switching of capacitive or resistive digital loads (e.g., RF front-end bias networks, test equipment relays) requiring precise edge control. IC Role / Device Role / Timing Role: Precision timing driver delivering sub-15-ns edges with minimal jitter to enable deterministic load activation. Use Value: 14-ns rise time ensures <1% timing uncertainty at 10-MHz toggle rates; matched dual channels support differential signaling.

Synchronous Rectifier Gate Drive

Switch-Mode Power Supply Driver

Use Scenario: Driving parallel low-side N-MOSFETs in secondary-side synchronous rectification of isolated DC-DC converters (e.g., LLC, forward, flyback).

IC Role / Device Role / Timing Role: Dual-channel gate driver providing simultaneous, matched-turn-on signals to multiple MOSFETs with sub-30-ns propagation matching.

Use Value: Reduces conduction losses by replacing Schottky diodes; compound output maintains >4-A effective drive even at 125 °C junction temperature.

Use Scenario: Buffering PWM outputs from controllers (e.g., UC384x, TL494) to drive primary-side MOSFETs in boost, buck, or half-bridge topologies.

IC Role / Device Role / Timing Role: High-current gate buffer isolating noise-sensitive controller from high-di/dt power stage; supports >500-kHz switching.

Use Value: 5-A sink current rapidly discharges gate capacitance, minimizing Miller plateau time and improving efficiency at high frequency.

Solenoid and Motor Driver Interface

High-Speed Digital Load Switching

Use Scenario: Driving gate of N-channel power MOSFETs controlling 12-V/24-V solenoids or brushed DC motors in industrial actuators.

IC Role / Device Role / Timing Role: Robust logic-level translator and current amplifier interfacing microcontroller GPIO to inductive loads.

Use Value: TTL-compatible inputs tolerate noisy industrial environments; UVLO prevents partial turn-on during undervoltage faults.

Use Scenario: Fast switching of capacitive or resistive digital loads (e.g., RF front-end bias networks, test equipment relays) requiring precise edge control.

IC Role / Device Role / Timing Role: Precision timing driver delivering sub-15-ns edges with minimal jitter to enable deterministic load activation.

Use Value: 14-ns rise time ensures <1% timing uncertainty at 10-MHz toggle rates; matched dual channels support differential signaling.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual low-side gate driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
UCC27324DR	3-A source / 3-A sink (symmetric), no UVLO hysteresis, higher R_DS(on) in pull-down stage.	Lacks 5-A sink capability; less suitable for high-Q_G MOSFETs or high-temperature operation.	Select UCC27324DR only if symmetric drive and lower cost outweigh need for high sink current and robust UVLO.
TC4427ACOA	1.2-A source/sink, SOIC-8, no UVLO, higher propagation delay (60 ns typical).	Insufficient peak current for >500-kHz SMPS with >50-nC MOSFETs; no supply monitoring.	Choose TC4427ACOA only for low-frequency (<200 kHz), low-power gate drive where thermal headroom is ample.

Compared with UCC27324DR and TC4427ACOA, LM5111-1M/NOPB provides superior sink current (5 A vs ≤3 A), tighter timing (25 ns vs ≥60 ns), and integrated UVLO with hysteresis-making it the preferred choice for thermally constrained, high-frequency power conversion where MOSFET gate charge exceeds 30 nC.

Availability

LM5111-1M/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-term industrial lifecycle support, and traceable sourcing.

Supply support for LM5111-1M/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 technologies, with decades of expertise in high-reliability power IC design.

The LM5111 family was developed specifically for high-efficiency, high-frequency power conversion systems-delivering enhanced peak current, thermal robustness, and logic flexibility over legacy gate drivers in SMPS, motor control, and industrial automation.

FAQ

What is the UVLO behavior of LM5111-1M/NOPB during power-up?

During power-up, LM5111-1M/NOPB remains disabled until VCC–VEE reaches 2.9 V (typical rising threshold). Once enabled, it holds both OUTA and OUTB low during UVLO conditions. This ensures safe default-off state for connected N-MOSFETs, preventing unintended conduction in SMPS or motor control circuits. The 230-mV hysteresis prevents chatter near the threshold.

Can LM5111-1M/NOPB drive both channels in parallel to increase current?

Yes, LM5111-1M/NOPB supports parallel operation: tie IN_A to IN_B and OUT_A to OUT_B to achieve 6-A source and 10-A sink capability. Propagation delays are tightly matched (<5 ns typical), minimizing shoot-through risk. TI characterizes efficiency loss at <1% versus dual-channel mode-making it viable for single high-current gate drive applications.

What decoupling capacitors are required for stable LM5111-1M/NOPB operation?

LM5111-1M/NOPB requires two VCC–VEE bypass capacitors: a 0.1-µF X7R ceramic capacitor placed immediately adjacent to pins 6 and 3, and a 1-µF (or larger) low-ESR ceramic or tantalum capacitor in parallel. This dual-stage filtering suppresses high-frequency noise and supplies transient peak currents during MOSFET switching events.

Is LM5111-1M/NOPB pin-compatible with other industry-standard gate drivers?

Yes, LM5111-1M/NOPB uses the same SOIC-8 pinout as TC4426/27/28 and UCC27323/4/5. Pin functions (IN_A, IN_B, VEE, VCC, OUT_A, OUT_B, NC) align directly-enabling drop-in replacement in existing designs without PCB revision, provided UVLO and drive strength requirements are compatible.

How does the compound output stage of LM5111-1M/NOPB improve performance over standard CMOS drivers?

The compound output stage integrates MOS and bipolar transistors in parallel: the MOS device delivers rail-to-rail voltage swing, while the bipolar device supplies high peak current near the MOSFET's V_GS(th) region. This combination reduces output current variation across temperature (–40 °C to +125 °C) and supply voltage (3.5 V–14 V), ensuring consistent gate drive strength in demanding power applications.

LM5111-1M/NOPB Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Last Time Buy

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:: 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

LM5111-1M/NOPB FAQ

1.How can I place an order for LM5111-1M/NOPB through Aetrix?

Please submit a Request for Quotation (RFQ) for LM5111-1M/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 LM5111-1M/NOPB reliable?

The price and inventory of LM5111-1M/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM5111-1M/NOPB is usually 5 days.

3.What payment methods are accepted for LM5111-1M/NOPB?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM5111-1M/NOPB transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LM5111-1M/NOPB?

LM5111-1M/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LM5111-1M/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 LM5111-1M/NOPB?

For technical support, including LM5111-1M/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM5111-1M/NOPB requirements.

6.How does Aetrix verify that LM5111-1M/NOPB is sourced from the original manufacturer or authorized distributors?

All LM5111-1M/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 LM5111-1M/NOPB meets industry standards.

7.What is the process for return or replacement of LM5111-1M/NOPB?

All LM5111-1M/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM5111-1M/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 LM5111-1M/NOPB part is unused and in its original packaging.

Return procedure for LM5111-1M/NOPB:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…