LM25118Q1MH/NOPB Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The LM25118Q1MH/NOPB is an automotive-grade, single-output buck-boost DC/DC controller from Texas Instruments supporting 3V to 42V input at 500kHz switching frequency. It uses current-mode PWM control and is housed in a 20-pin HTSSOP with an exposed thermal pad, making it ideal for automotive 12V and 24V power supply designs requiring both step-down and step-up voltage regulation.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- LM25118Q1MH/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Buck-boost topology supporting both step-down and step-up voltage conversion
- Wide input voltage range: 3V to 42V for automotive 12V/24V compatibility
- Current-mode PWM control at 500kHz for fast transient response
- Automotive-grade (Q1) qualification for harsh environment reliability
- 20-pin HTSSOP package with exposed thermal pad for efficient heat dissipation
- Lead-free and RoHS compliant (/NOPB suffix)
Applications
The LM25118Q1MH/NOPB is designed for automotive power management systems where the supply voltage can rise above or fall below the required output, such as start-stop systems, battery-backed ECUs, and 12V/24V automotive bus regulators. It is also used in industrial equipment requiring a wide input range regulation capable of both step-down and step-up conversion.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | SEATED HGT-NOM |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 42V |
| Input Voltage-Min | 3V |
| Input Voltage-Nom | 24V |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 10A |
| Output Voltage-Max | 38V |
| Output Voltage-Min | 1.23V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP20,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Screening Level | AEC-Q100 |
| Surface Mount | YES |
| Switcher Configuration | BUCK-BOOST |
| Switching Frequency-Max | 500kHz |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM25118Q1MH/NOPB:
Switching Controller, Current-mode, 10A, 500kHz Switching Freq-Max, BICMOS, PDSO20
Frequently Asked Questions
What makes the LM25118Q1MH/NOPB suitable for automotive applications?
The LM25118Q1MH/NOPB carries Q1 automotive qualification, meaning it has been tested to AEC-Q100 standards for use in automotive environments with wide temperature ranges, vibration, and EMI conditions. Its input voltage range of 3V to 42V also covers automotive load dump transients and start-stop battery voltage fluctuations, making it well suited for ECU and body electronics power supplies.
What is the switching frequency of the LM25118Q1MH/NOPB?
The LM25118Q1MH/NOPB operates at a switching frequency of 500kHz. This frequency balances the trade-off between efficiency, inductor size, and EMI performance, allowing designers to use smaller external inductors while maintaining good efficiency for automotive and industrial power conversion applications.
Can the LM25118Q1MH/NOPB both step up and step down the voltage?
Yes, the LM25118Q1MH/NOPB is a buck-boost (step-down/step-up) controller, meaning it can regulate the output whether the input voltage is higher or lower than the desired output. This makes it ideal for systems with variable input voltages such as automotive batteries, where the voltage may range from below 5V during cranking to over 40V during load dump events.
Is the LM25118Q1MH/NOPB lead-free and RoHS compliant?
Yes, the '/NOPB' suffix explicitly indicates that the LM25118Q1MH/NOPB is manufactured without lead (No Pb). It carries a Pb-free code and meets RoHS environmental compliance requirements. This makes it suitable for use in environmentally regulated automotive, industrial, and consumer markets worldwide.
Related Guides
SN74LVC14APWR Hex Schmitt-Trigger Inverter: Application Note and Design Guide
Complete design guide for the SN74LVC14APWR hex Schmitt-trigger inverter: thresholds, decoupling, oscillator design, package selection, and common pitfalls.
May 21, 2026
TPS62841DGRR Buck Converter Selection Guide: Ultra-Low 60 nA IQ for Battery-Powered IoT
How to choose the right TPS62841 variant for IoT, wearables, and wireless sensors: quiescent current, voltage range, package, and application examples.
May 21, 2026
TPS54160DGQR Selection Guide: How to Choose a 60V Step-Down Buck Converter
Complete selection guide for the TPS54160DGQR 60V/1.5A step-down converter. Compare specs, alternatives, and sourcing options for industrial and automotive designs.
May 20, 2026
LMV932MM Dual Low-Voltage CMOS Op-Amp: Application Design Guide
Complete application design guide for the LMV932MM dual rail-to-rail CMOS op-amp: supply decoupling, RRIO design rules, stability, and recommended circuits for 1.8V–5.5V battery-powered systems.
May 20, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”