LM5117QPMHENOPB Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The LM5117QPMHENOPB is an automotive-qualified wide input range synchronous buck controller from Texas Instruments, housed in a 20-pin HTSSOP package and rated for AEC-Q100 Grade 1 operation. It supports duty cycles from near 0% to 100% with peak-current mode control for stable regulation across demanding automotive and industrial voltage conversion applications. Available in stock worldwide for high-voltage automotive DC-DC power supply designs.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 21
- Lifecycle
- ACTIVE
- Datasheet
- LM5117QPMHENOPB Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Wide input range synchronous buck controller supporting automotive 8V to 75V input voltages
- AEC-Q100 Grade 1 automotive qualification for use in harsh vehicular and industrial environments
- Peak current-mode control with adjustable frequency and external synchronization capability
- Near 0% to 100% duty cycle range enabling both step-down and near-unity voltage conversion ratios
- 20-pin HTSSOP package (HTSSOP-20) with exposed thermal pad for efficient heat dissipation
Applications
The LM5117QPMHENOPB is designed for automotive body electronics, ADAS power supply rails, and 48V to 12V/5V conversion in electric vehicle and traditional automotive systems. Its wide input range and automotive qualification also make it suitable for industrial power supplies requiring regulation from high-voltage bus rails in factory automation, energy storage systems, and off-road equipment.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the LM5117QPMHENOPB and what makes it automotive qualified?
The LM5117QPMHENOPB is an AEC-Q100 Grade 1 qualified synchronous buck DC-DC controller from Texas Instruments, designed for use in automotive electronic systems. AEC-Q100 qualification means the device has been tested and certified to meet automotive reliability standards including extended temperature, humidity, vibration, and electrical stress requirements, ensuring long-term reliability in vehicle environments.
What input voltage range does the LM5117QPMHENOPB support?
The LM5117QPMHENOPB is designed for wide input voltage range operation, supporting automotive bus voltages from approximately 8V to 75V, making it suitable for both 12V traditional automotive systems and emerging 48V mild-hybrid vehicle architectures. This broad input range also covers industrial applications powered from high-voltage DC bus rails in factory automation and energy storage equipment.
What control method does the LM5117QPMHENOPB use?
The LM5117QPMHENOPB uses peak current-mode control, where the inductor peak current is sensed cycle-by-cycle and compared to an error amplifier output to determine the duty cycle. This control method provides inherent current limiting, fast transient response, and simplified loop compensation compared to voltage-mode control, making it preferred for automotive power supply designs requiring robust fault protection.
What package is the LM5117QPMHENOPB available in?
The LM5117QPMHENOPB is available in a 20-pin HTSSOP (Heat-sink TSSOP) package, a compact surface-mount package with an exposed thermal pad on the underside that provides improved thermal dissipation compared to standard TSSOP. This thermal pad can be soldered to a PCB copper pour for effective heat conduction, enabling higher continuous power dissipation at automotive operating temperatures.
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.
More from Texas Instruments
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.”