LM5117QPSQ/NOPB Texas Instruments Integrated Circuit (Quad Flat No-Lead) In Stock
LM5117QPSQ/NOPB is an AEC-Q100-qualified wide-input synchronous buck controller from Texas Instruments, supporting 5.5 V to 65 V input and programmable output from 0.8 V. It uses current-mode PWM control with a 24-pin QFN package for automotive and industrial 48 V rail regulation. From $4.50, in stock, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Quad Flat No-Lead
- Pin Count
- 25
- Lifecycle
- ACTIVE
- Datasheet
- LM5117QPSQ/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.1063(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Wide input range of 5.5 V to 65 V covers 12 V, 24 V, and 48 V automotive and industrial bus rails in a single synchronous buck controller design
- Current-mode PWM control with programmable output from 0.8 V enables precise point-of-load regulation across diverse load profiles without external compensation redesign
- AEC-Q100 qualified (QPSQ suffix) for automotive-grade applications, supporting reliable operation across -40°C to 125°C junction temperature range
Applications
LM5117QPSQ/NOPB is used in automotive infotainment, ADAS compute modules, and 48 V mild-hybrid vehicle subsystems where a wide-input synchronous buck controller must tolerate load dump events up to 65 V. It is also applied in industrial 48 V distributed power architectures and server rack PDUs requiring programmable output voltage from 0.8 V at high efficiency. The 24-pin QFN package enables compact thermal layouts in under-hood and chassis-mounted power modules.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | PROGRAMMABLE OUTPUT FROM 0.8V |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 65V |
| Input Voltage-Min | 5.5V |
| Input Voltage-Nom | 48V |
| JESD-30 Code | S-XQCC-N24 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 20A |
| Output Voltage-Max | 62V |
| Output Voltage-Min | 0.8V |
| Package Body Material | UNSPECIFIED |
| Package Equivalence Code | LCC24,.16SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 750kHz |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does LM5117QPSQ/NOPB support, and which bus architectures does that cover?
LM5117QPSQ/NOPB operates from 5.5 V to 65 V input, covering 12 V automotive low-side, 24 V industrial, and 48 V mild-hybrid vehicle bus architectures. This range also accommodates transient load-dump spikes common in automotive environments, allowing the controller to remain operational without requiring additional overvoltage clamping in most 48 V designs.
How low can the output voltage be programmed on LM5117QPSQ/NOPB, and why does that matter for processor power rails?
LM5117QPSQ/NOPB supports a programmable output voltage starting from 0.8 V, which matches the core supply requirements of modern application processors and FPGAs commonly rated at 0.8 V to 1.2 V. Using current-mode PWM control, the regulator maintains this low output voltage with fast transient response, supporting dynamic voltage scaling in ADAS compute platforms and embedded SoC boards.
Is LM5117QPSQ/NOPB qualified for automotive designs, and what temperature range does it support?
Yes, the QPSQ suffix denotes AEC-Q100 automotive qualification, and the device is rated for junction temperatures from -40°C to 125°C, meeting Grade 1 automotive thermal requirements. This makes it suitable for under-hood and cabin-mounted 48 V power modules where temperature extremes, vibration, and long operational life over 15 years are standard design constraints.
What package does LM5117QPSQ/NOPB use, and how does it assist thermal management in dense power boards?
LM5117QPSQ/NOPB is housed in a 24-pin QFN (quad flat no-lead) package, which features an exposed thermal pad on the bottom. This exposed pad can be soldered directly to a PCB copper pour, providing a low-resistance thermal path to dissipate heat from the switching controller, enabling higher switching frequency and current density in compact 48 V automotive or industrial buck converter layouts.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $8.2125 | $8.21 |
| 2+ | $5.4750 | $10.95 |
| 6+ | $4.1063 | $24.64 |
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