LM20143QMHE/NOPB Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments LM20143QMHE/NOPB is an AEC-Q100 automotive-grade 3A synchronous buck regulator in 16-HTSSOP, supporting 2.95 V to 5.5 V input and 0.8 V to 3.3 V adjustable output. Operates from -40°C to 125°C. Available from stock worldwide.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- LM20143QMHE/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.9500(MOQ 500)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- AEC-Q100 automotive-grade qualification supporting -40°C to 125°C junction temperature range for harsh environment reliability
- 3A synchronous buck with current-mode PWM control and adjustable switching frequency, enabling optimized inductor and capacitor selection
- Input range 2.95 V to 5.5 V with adjustable output from 0.8 V to 3.3 V covering core, I/O, and memory rail requirements in a single 16-HTSSOP package
Applications
The LM20143QMHE/NOPB is designed for automotive ADAS, infotainment, and body control modules that require a regulated 3A point-of-load supply from a 3.3 V or 5 V system bus over the -40°C to 125°C operating range. Its adjustable switching frequency and synchronous rectification reduce EMI and improve efficiency in noise-sensitive in-vehicle electronics. The HTSSOP-16 package integrates well with standard automotive PCB processes, making it suitable for space-constrained under-hood and cabin power conversion stages.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | OUTPUT VOLTAGE IS ADJUSTABLE FROM 0.8 TO 3.3V |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 2.95V |
| Input Voltage-Nom | 5V |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 3A |
| Output Voltage-Max | 5V |
| Output Voltage-Min | 0.8V |
| Output Voltage-Nom | 2.7V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 1500kHz |
| Technology | BICMOS |
| 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 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM20143QMHE/NOPB:
Switching Regulator, Current-mode, 5.3A, 1650kHz Switching Freq-Max, PDSO16
Switching Regulator, Current-mode, 3A, 1500kHz Switching Freq-Max, BICMOS, PDSO16
Frequently Asked Questions
What output current and voltage range does the LM20143QMHE/NOPB support for automotive point-of-load designs?
The LM20143QMHE/NOPB delivers up to 3 A continuous output current with an adjustable output voltage of 0.8 V to 3.3 V, set by an external resistor divider. This range covers standard logic rails such as 1.0 V core, 1.8 V I/O, and 3.3 V peripherals from a single 5 V automotive supply rail.
How does the adjustable switching frequency of the LM20143QMHE/NOPB benefit automotive EMI compliance?
By programming the switching frequency via a single external resistor from approximately 300 kHz to 2 MHz, engineers can spread-spectrum the fundamental and harmonics away from sensitive AM/FM radio bands (530 kHz to 108 MHz) and AM band (535 kHz to 1.7 MHz), helping meet CISPR 25 Class 5 automotive radiated emissions limits without additional filtering.
What thermal performance does the LM20143QMHE/NOPB offer and how does it sustain 3A in under-hood environments?
The 16-HTSSOP package provides a thermal pad on the underside with a junction-to-board thermal resistance (θJB) of approximately 25°C/W. At 3A load and 125°C ambient under-hood temperature, the device remains within its 150°C junction temperature limit when mounted on a 2-layer PCB with a 1 oz copper pour and a minimum 400 mm² ground plane.
For an ADAS SoC supply needing 1.8 V at 2.5 A, how does the LM20143QMHE/NOPB compare to a discrete PMOS LDO solution?
A discrete PMOS LDO dropping 5 V to 1.8 V at 2.5 A would dissipate 8 W as heat, requiring a large heatsink. The LM20143QMHE/NOPB synchronous buck achieves greater than 90% efficiency at this operating point, dissipating under 0.8 W, and fits entirely in the 16-HTSSOP footprint of roughly 30 mm², eliminating the heatsink and reducing total solution size by over 60%.
Related Guides
How to Choose a 3528 SMD Indicator LED for Blue Status Lighting: Selection Guide
A practical 3528 SMD indicator LED selection guide using 150141BS73100 and related Wurth 150141 variants for blue status lighting.
Jul 5, 2026
BAS70KFILM Design Guide for Low-Leakage Signal Clamping and RF Detector Inputs
Practical BAS70KFILM design guidance for signal clamps, RF detector inputs, leakage control, capacitance, layout, and sourcing alternatives.
Jul 5, 2026
How to Choose a BAS70 Schottky Diode for Signal Clamping: Selection Guide
A practical BAS70KFILM and BAS70-family Schottky diode selection guide for signal clamping, RF detection, leakage, and topology choices.
Jul 4, 2026
AMC1202DWVR Design Guide for Isolated Current Sensing
Practical AMC1202DWVR design guide covering shunt sizing, isolation layout, input filtering, ADC scaling, and sourcing choices.
Jul 4, 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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 500+ | $3.0300 | $1515.00 |
| 1000+ | $2.9900 | $2990.00 |
| 2500+ | $2.9500 | $7375.00 |
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.”