My Inquiry
My Account
Texas Instruments LM5101M/NOPB
- Part No.:
- LM5101M/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM5101M/NOPB.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:491
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM5101M/NOPB from Texas Instruments is a high-voltage dual-channel gate driver IC designed to independently control high-side and low-side N-channel MOSFETs in half-bridge and synchronous buck topologies. It features TTL-compatible logic inputs, 118 V bootstrap rail capability, 25 ns typical propagation delay, 15 ns rise/fall times into 1000 pF, and integrated bootstrap diode - enabling robust operation in industrial DC/DC converters up to 100 V HS-to-VSS.
For engineers reviewing the LM5101M/NOPB datasheet, LM5101M/NOPB pinout, LM5101M/NOPB application, or LM5101M/NOPB equivalent, this page delivers verified electrical specs, SOIC-8 package details, real-world timing behavior, thermal resistance (170°C/W), and validated alternatives for high-side/low-side drive replacement in power stage design.
Technical Context
The LM5101M/NOPB implements a robust level-shifting architecture to drive the high-side output (HO) referenced to a floating source (HS), supporting up to 100 V differential between HS and VSS. Its internal bootstrap diode enables self-powered high-side operation without external charge pumps.
Independent TTL-input logic thresholds (VIH = 1.8–2.2 V, VIL = 0.8–1.8 V) ensure compatibility with standard microcontroller PWM outputs. Under-voltage lockout (UVLO) on both VDD (6.0–7.4 V rising threshold) and HB (5.7–7.1 V) rails prevents erratic switching during brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Range | +9 V to +14 V - defines stable gate drive supply window for LO/HO output stages |
| HB to VSS Max | 118 V - sets absolute maximum bootstrap rail voltage for high-side floating operation |
| Propagation Delay | 25 ns typical - ensures tight timing alignment between HI/LI inputs and HO/LO outputs |
| Rise/Fall Time | 15 ns into 1000 pF - supports fast-switching MOSFETs in >500 kHz power converters |
| Output Current | 1.6 A peak pull-up / 1.8 A peak pull-down - drives large gate capacitances without external buffers |
| UVLO Thresholds | VDD rising: 6.9 V typ; HB rising: 6.6 V typ - prevents partial turn-on during supply ramp-up |
| Input Type | TTL-compatible - accepts standard 3.3 V or 5 V logic signals without level translation |
Pinout & Package
LM5101M/NOPB is packaged in an 8-pin SOIC (D) package with 1.75 mm max height, RoHS-compliant NiPdAu lead finish, and MSL Level-1 rating. The exposed pad is not present - only pins 1–8 are functional.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VDD | Positive gate drive supply | Local 9–14 V rail for both drivers; requires low-ESR/ESL decoupling capacitor adjacent to pin |
| 2 HB | Bootstrap rail connection | Connects to positive terminal of bootstrap capacitor; supports up to 118 V relative to VSS |
| 3 HO | High-side gate driver output | Drives gate of high-side N-MOSFET; referenced to HS node, not VSS |
| 4 HS | High-side source reference | Connects to bootstrap capacitor negative terminal and high-side MOSFET source; floats up to 100 V above VSS |
| 5 HI | High-side input control | TTL-compatible logic input (1.8–2.2 V VIH); unused pin must be tied to ground |
| 6 LI | Low-side input control | TTL-compatible logic input (1.8–2.2 V VIH); independent of HI for asymmetric drive control |
| 7 VSS | Ground return | Common reference for LO, LI, VDD, and control logic; must be low-inductance connection |
| 8 LO | Low-side gate driver output | Drives gate of low-side N-MOSFET; referenced to VSS; capable of 1.8 A pulldown current |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bootstrap diode | Reduces BOM count and PCB area by eliminating external diode; VDL = 0.9 V typ at 100 µA |
| Propagation delay matching | 3 ns typical mismatch between HI→HO and LI→LO paths - minimizes shoot-through risk in half-bridge |
| Robust UVLO protection | Dual-rail lockout (VDD and HB) prevents partial turn-on during startup or fault recovery |
| Fast switching performance | 25 ns propagation + 15 ns edge rates enable reliable operation in >1 MHz resonant converters |
| Pin compatibility | Direct replacement for HIP2101 - simplifies redesign of legacy gate driver circuits |
Applications
| Industrial Half-Bridge Motor Drive | Synchronous Buck DC/DC Converter |
|---|---|
|
Use Scenario: Driving N-channel MOSFETs in a 48 V input, 12 V output isolated motor control H-bridge with 200 kHz switching. IC Role / Device Role: High-side/low-side gate driver providing independent TTL-level control, bootstrap charging, and shoot-through prevention via matched delays. Use Value: Enables efficient 97% conversion efficiency with <100 ns dead-time margin due to 3 ns delay matching and 25 ns propagation. |
Use Scenario: Regulating 24 V bus down to 5 V for FPGA core supply in factory automation PLCs. IC Role / Device Role: Dual-channel gate driver controlling high-side/low-side MOSFETs in continuous conduction mode (CCM) buck topology. Use Value: Delivers 1.8 A pulldown and 1.6 A pullup into 2.2 nF total gate charge, sustaining 500 kHz operation with minimal gate loss. |
| Current-Fed Push-Pull Converter | Two-Switch Forward Power Supply |
|
Use Scenario: Isolated 36 V–72 V telecom rectifier using push-pull topology with center-tapped transformer and synchronous rectification. IC Role / Device Role: Gate driver for two high-side switches operating with complementary TTL inputs and shared bootstrap supply. Use Value: Supports 100 V HS-to-VSS differential and 118 V HB rail, enabling safe operation across full input range with margin. |
Use Scenario: 48 V input, 12 V/20 A server PSU using two-switch forward with active clamp reset. IC Role / Device Role: Controls primary-side switches and active clamp MOSFET via independent HI/LI inputs and robust level shift. Use Value: Integrated bootstrap diode and 170°C/W θJA allow reliable operation at 85°C ambient without forced airflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage dual-channel gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5100M/NOPB | CMOS-input thresholds (VIH = 5.5–8 V), higher VDD quiescent current (0.2 mA vs. 0.4 mA), identical pinout and timing | Requires 5 V logic interface; unsuitable for direct 3.3 V MCU drive without level shifting | Select LM5100M/NOPB only when system uses 5 V control logic and CMOS noise immunity is prioritized |
| HIP2101IBZT | Same SOIC-8 footprint, 100 V HS rating, but no integrated bootstrap diode; requires external Schottky | Higher board area and BOM cost; slightly better thermal performance (θJA = 150°C/W) | Choose HIP2101IBZT when external diode selection is needed for ultra-low VF or high-reliability qualification |
Compared with LM5100M/NOPB, LM5101M/NOPB offers direct 3.3 V logic compatibility and lower input threshold hysteresis; versus HIP2101IBZT, it reduces component count and layout complexity via integrated bootstrap diode - critical for space-constrained industrial power modules.
Availability
LM5101M/NOPB is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, server DC/DC converters, and factory automation systems requiring stable component supply and long-term production continuity.
Supply support for LM5101M/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 over 50 years of innovation in high-reliability power solutions.
The LM5101M/NOPB belongs to TI's high-voltage gate driver product line, engineered specifically for ruggedized half-bridge and synchronous buck applications in industrial, telecom, and computing power systems.
FAQ
What is the maximum allowable voltage difference between HS and VSS for LM5101M/NOPB?
The LM5101M/NOPB supports a maximum HS-to-VSS voltage of +100 V, as specified in the Absolute Maximum Ratings table. This rating enables use in high-input-voltage topologies such as 48 V and 60 V industrial DC buses. Exceeding this limit risks permanent damage to the internal level shifter and high-side driver circuitry. Always maintain ≥10 V margin below 100 V in final designs to accommodate transients.
Does LM5101M/NOPB require an external bootstrap diode?
No, LM5101M/NOPB integrates a bootstrap diode with 0.9 V typical forward voltage at 100 µA. This eliminates the need for an external diode in most applications. However, for high-frequency (>1 MHz) or high-current (>10 A) designs where diode conduction loss becomes significant, adding a parallel Schottky diode (e.g., RB055LAM-40) is recommended to reduce thermal stress on the IC.
What is the recommended minimum input pulse width for reliable switching of LM5101M/NOPB?
The LM5101M/NOPB specifies a minimum input pulse width of 50 ns to guarantee output state change under all operating conditions. This value is validated across temperature (−40°C to +125°C) and supply voltage (9–14 V). For PWM controllers generating pulses narrower than 50 ns, additional filtering or pulse stretching is required to avoid missed transitions or metastability.
How does the UVLO on the HB rail function in LM5101M/NOPB?
The HB UVLO activates when the bootstrap rail voltage falls below 5.7 V (typical), disabling the high-side driver output (HO) while leaving LO operational. This prevents weak or incomplete turn-on of the high-side MOSFET, which could cause shoot-through or excessive conduction loss. The 0.4 V hysteresis (VHBH) ensures clean release once HB recovers above 6.1 V.
Is LM5101M/NOPB pin-compatible with HIP2101?
Yes, LM5101M/NOPB is pin-compatible with HIP2101 in the SOIC-8 package: VDD, HB, HO, HS, HI, LI, VSS, and LO map identically. However, LM5101M/NOPB includes an integrated bootstrap diode absent in HIP2101, so external diode removal is required during drop-in replacement. No PCB layout changes are needed beyond diode omission.
LM5101M/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- 0.8V, 2.2V
- Current - Peak Output (Source, Sink):
- 1.6A, 1.6A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- 118 V
- Rise / Fall Time (Typ):
- 600ns, 600ns
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM5101M/NOPB FAQ
1.How can I place an order for LM5101M/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM5101M/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 LM5101M/NOPB reliable?
The price and inventory of LM5101M/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM5101M/NOPB is usually 5 days.
3.What payment methods are accepted for LM5101M/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM5101M/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM5101M/NOPB?
LM5101M/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM5101M/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 LM5101M/NOPB?
For technical support, including LM5101M/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM5101M/NOPB requirements.
6.How does Aetrix verify that LM5101M/NOPB is sourced from the original manufacturer or authorized distributors?
All LM5101M/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 LM5101M/NOPB meets industry standards.
7.What is the process for return or replacement of LM5101M/NOPB?
All LM5101M/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM5101M/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 LM5101M/NOPB part is unused and in its original packaging.
Return procedure for LM5101M/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM5101M/NOPB Tags
-
ZXGD3009E6TA
Diodes Incorporated
-
1EDN7512BXTSA1
Infineon Technologies
-
UCC27517DBVR
Texas Instruments
-
MCP1416T-E/OT
Microchip Technology
-
MCP1402T-E/OT
Microchip Technology
-
MCP1415T-E/OT
Microchip Technology
-
MCP1401T-E/OT
Microchip Technology
-
IX4428NTR
Littelfuse Inc.
-
IRS2005STRPBF
Infineon Technologies
-
IRS2008STRPBF
Infineon Technologies
-
IX4310TTR
Littelfuse Inc.
-
2EDN7524RXTMA1
Infineon Technologies
Tech Hub
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.
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…
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…
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…
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 …
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…
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…
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…
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…
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…
