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Texas Instruments LM25101BMAX/NOPB
- Part No.:
- LM25101BMAX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM25101BMAX/NOPB.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 8SOIC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM25101BMAX/NOPB from Texas Instruments is a 2-A peak-output, 80-V high-voltage half-bridge gate driver IC designed to independently control high-side and low-side N-channel MOSFETs in synchronous buck and half-bridge power stages. It features TTL-compatible inputs, integrated bootstrap diode, 25-ns typical propagation delay, and independent UVLO on VDD (6.9 V) and HB–HS (6.6 V) rails-enabling robust operation in 48-V server and solar DC-DC converters.
For engineers reviewing the LM25101BMAX/NOPB datasheet, LM25101BMAX/NOPB pinout, LM25101BMAX/NOPB application, or LM25101BMAX/NOPB equivalent, key selection considerations include its 2-A peak sourcing/sinking capability, 8-ns rise/fall time into 1000-pF load, 3-ns typical propagation delay matching between HO/LO, bootstrap rail tolerance up to 100-V DC, and compatibility with standard 8-pin SOIC and SO PowerPAD packages.
Technical Context
The LM25101BMAX/NOPB implements a robust level-shifting architecture to drive the high-side output referenced to the HS node, enabling operation with up to 100-V bootstrap supply while maintaining tight 3-ns delay matching between HO and LO outputs. Its dual UVLO circuitry independently monitors VDD (6.9 V threshold) and HB–HS (6.6 V threshold), ensuring safe startup and fault isolation.
Input logic uses TTL thresholds (VIH = 1.8 V typ, VIL = 1.3 V typ) with 50-mV hysteresis, and both outputs deliver 2-A peak current with VOL ≤ 0.4 V and VOH ≤ 0.6 V at 100 mA sink/source-optimized for fast, low-loss switching of power MOSFETs in high-frequency (>500 kHz) topologies including two-switch forward and active-clamp converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 2 A per channel - sufficient to drive 1000-pF gate capacitance with 8-ns rise/fall times at 500-kHz switching. |
| Bootstrap Voltage Range | Up to 100 V DC - supports high-input-voltage half-bridge operation in 48-V server and solar DC-DC systems. |
| Propagation Delay | 22–56 ns (typ 25 ns) - enables precise timing control in high-frequency synchronous rectification. |
| Delay Matching | 4–10 ns (typ 3 ns) - minimizes shoot-through risk during cross-conduction in bridge configurations. |
| UVLO Thresholds | VDD: 6.9 V (±0.5 V hysteresis); HB–HS: 6.6 V (±0.4 V hysteresis) - ensures reliable startup and fault recovery. |
| Input Logic Type | TTL-compatible (VIH = 1.3–2.3 V, VIL = 1.3–1.8 V) - interoperable with 3.3-V and 5-V PWM controllers without level translation. |
| Rise/Fall Time | 8 ns into 1000-pF load - reduces switching losses and EMI in high-efficiency power stages. |
Pinout & Package
LM25101BMAX/NOPB is packaged in an 8-pin SOIC (3.91 mm × 4.9 mm) with exposed thermal pad, optimized for PCB heat dissipation and industrial reliability. The thermal pad must be soldered to the ground plane per TI design guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive gate-drive supply input | Supplies low-side driver and logic; requires local 0.1-µF ceramic decoupling to VSS. |
| HB | High-side bootstrap rail | Connects to positive terminal of bootstrap capacitor; supports up to 100-V DC bias relative to HS. |
| HO | High-side gate driver output | Drives high-side MOSFET gate; referenced to HS node; 2-A peak sourcing/sinking capability. |
| HS | High-side MOSFET source connection | Return path for bootstrap capacitor and high-side source; clamped by external MOSFET body diode. |
| HI | High-side control input | TTL-level input (1.3–2.3 V); unused pins must be tied to VSS to prevent floating logic states. |
| LI | Low-side control input | TTL-level input (1.3–2.3 V); independent of HI for flexible dead-time and phase control. |
| LO | Low-side gate driver output | Drives low-side MOSFET gate; referenced to VSS; 2-A peak sourcing/sinking capability. |
| VSS | Ground return | Common reference for all signals; must be low-inductance connection to PCB ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Independent HI/LI inputs | Enables full control over high-side and low-side MOSFET timing-critical for implementing programmable dead time and phase-shifted topologies. |
| Integrated bootstrap diode | Reduces BOM count and layout area; specified VDL = 0.85 V at 100 µA and VDH = 0.9 V at 100 mA-minimizing charge loss during bootstrapping. |
| Robust level shifter | Operates at high speed with low power consumption and clean transitions-ensuring reliable HO switching even under fast HS node slew rates (50 V/ns). |
| Dual UVLO protection | Separate monitoring of VDD and HB–HS rails prevents unsafe operation during brownout or bootstrap capacitor discharge-enhancing system safety in 48-V and solar applications. |
| SOIC package with thermal pad | Enables efficient heat transfer to PCB ground plane (RθJB = 49.1 °C/W), supporting continuous 2-A output operation at TJ ≤ 125 °C. |
Applications
| Motor-Controlled Drivers | Half and Full Bridge Power Converters |
|---|---|
Use Scenario: Brushless DC motor drives in industrial automation requiring bidirectional torque and regenerative braking. IC Role / Device Role / Timing Role: Gate driver for complementary high-side/low-side N-MOSFET pairs in 3-phase inverter legs. Use Value: 2-A peak drive current and 8-ns edge speeds enable <1-µs dead-time control-reducing conduction losses and improving torque linearity. |
Use Scenario: Isolated DC-DC conversion in telecom rectifiers using two-switch forward topology. IC Role / Device Role / Timing Role: High-voltage half-bridge driver controlling primary-side switches with 100-V bootstrap capability. Use Value: Independent HI/LI inputs allow precise synchronization with controller PWM, while dual UVLO prevents misfiring during input voltage transients. |
| Synchronous Buck Converters | 48-V Server Power |
Use Scenario: Point-of-load regulation for FPGA and ASIC cores in data center servers. IC Role / Device Role / Timing Role: Dual-channel gate driver for high-efficiency synchronous rectification in 12-V input → 0.8-V output stages. Use Value: 3-ns HO/LO delay matching minimizes shoot-through risk at >1-MHz switching frequencies-boosting efficiency above 95%. |
Use Scenario: Intermediate bus conversion in rack-mounted server PSUs handling 48-V input distribution. IC Role / Device Role / Timing Role: Half-bridge driver for primary-side switches in LLC resonant converters operating up to 100-V bootstrap voltage. Use Value: 100-V HB–HS rating and SOIC thermal pad support stable operation under high ambient temperatures and transient overvoltage conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar half-bridge gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM25101AMAX/NOPB | 3-A peak output vs 2-A; identical pinout and UVLO thresholds | Better suited for higher gate-charge MOSFETs (QG > 25 nC) or higher-frequency designs (>1 MHz) | Select when driving larger FETs or requiring margin on peak current; same PCB layout. |
| UCC27201D | 2-A output, 120-V bootstrap rating, no integrated diode, 10-pin WSON package | Requires external bootstrap diode but supports higher voltage rails (e.g., 96-V telecom) | Choose for >100-V applications or where board space allows discrete diode placement and tighter thermal management is needed. |
Compared with LM25101AMAX/NOPB, the LM25101BMAX/NOPB trades 1-A peak current for lower quiescent power (0.4 mA vs 0.5 mA) and reduced gate drive overshoot in medium-QG applications; versus UCC27201D, it offers integrated diode convenience and SOIC manufacturability at the cost of lower max bootstrap voltage and larger footprint.
Availability
LM25101BMAX/NOPB is available at Aetrix Electronics and suitable for motor-controlled drivers, half-bridge power converters, and 48-V server power systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LM25101BMAX/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 and embedded processing technologies, with leadership in power management, signal chain, and high-reliability IC design.
The LM25101 product line delivers high-voltage, high-speed gate drivers for industrial, computing, and renewable energy applications-designed specifically to replace discrete driver solutions with integrated, UVLO-protected, and thermally optimized alternatives.
FAQ
What is the maximum bootstrap voltage supported by LM25101BMAX/NOPB?
The LM25101BMAX/NOPB supports a maximum bootstrap supply voltage of 100 V DC across the HB-to-HS terminals. This rating is validated per absolute maximum specifications and enables reliable operation in 48-V and higher-input-voltage half-bridge topologies such as two-switch forward and active-clamp converters. Operation beyond this limit risks permanent damage to the internal bootstrap diode and level shifter.
Does LM25101BMAX/NOPB require an external bootstrap diode?
No, LM25101BMAX/NOPB integrates a bootstrap diode with forward voltage VDL = 0.85 V (typ) at 100 µA and VDH = 0.9 V (typ) at 100 mA. External diodes are optional and only recommended for ultra-high-reliability applications where redundancy or lower reverse recovery loss is required-TI's reference designs confirm full functionality without external diodes.
What is the purpose of the NC pins on LM25101BMAX/NOPB?
LM25101BMAX/NOPB has no NC (no-connect) pins in its 8-pin SOIC package. All eight pins-VDD, HB, HO, HS, HI, LI, LO, and VSS-are functional and electrically assigned per the official TI datasheet (SNVS859C). Any reference to NC pins applies only to other variants (e.g., 10-pin WSON), not to LM25101BMAX/NOPB.
How does LM25101BMAX/NOPB handle undervoltage lockout conditions?
LM25101BMAX/NOPB implements dual independent UVLO circuits: one monitors VDD (threshold 6.9 V ±0.5 V hysteresis), the other monitors HB–HS (threshold 6.6 V ±0.4 V hysteresis). If either rail falls below its threshold, the corresponding output (LO for VDD, HO for HB–HS) is forced low. This prevents partial or unsafe switching during power-up, brownout, or bootstrap capacitor discharge events.
Can LM25101BMAX/NOPB drive both high-side and low-side MOSFETs simultaneously?
Yes, LM25101BMAX/NOPB independently drives high-side and low-side N-channel MOSFETs via separate HO and LO outputs, each controlled by dedicated HI and LI inputs. Its logic table confirms simultaneous high/low states (e.g., HI=H, LI=H → HO=H, LO=H), enabling synchronous rectification, phase-shifted control, and custom dead-time insertion-provided external timing logic avoids shoot-through.
LM25101BMAX/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:
- Half-Bridge
- Channel Type:
- Independent
- Number of Drivers:
- 2
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 9V ~ 14V
- Logic Voltage - VIL, VIH:
- 2.3V, -
- Current - Peak Output (Source, Sink):
- 2A, 2A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- 100 V
- Rise / Fall Time (Typ):
- 570ns, 430ns
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM25101BMAX/NOPB FAQ
1.How can I place an order for LM25101BMAX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM25101BMAX/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 LM25101BMAX/NOPB reliable?
The price and inventory of LM25101BMAX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM25101BMAX/NOPB is usually 5 days.
3.What payment methods are accepted for LM25101BMAX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM25101BMAX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM25101BMAX/NOPB?
LM25101BMAX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM25101BMAX/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 LM25101BMAX/NOPB?
For technical support, including LM25101BMAX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM25101BMAX/NOPB requirements.
6.How does Aetrix verify that LM25101BMAX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM25101BMAX/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 LM25101BMAX/NOPB meets industry standards.
7.What is the process for return or replacement of LM25101BMAX/NOPB?
All LM25101BMAX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM25101BMAX/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 LM25101BMAX/NOPB part is unused and in its original packaging.
Return procedure for LM25101BMAX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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