LM5143QRWGTQ1 Texas Instruments Integrated Circuit (Quad Flat No-Lead) In Stock
Texas Instruments LM5143QRWGTQ1 is an automotive-grade dual 2-phase synchronous buck DC-DC controller supporting 3.5V to 65V input, low quiescent current, current-mode PWM control, and AEC-Q100 qualification in a 40-pin VQFN package.
- Manufacturer
- Texas Instruments
- Package
- Quad Flat No-Lead
- Pin Count
- 41
- Lifecycle
- OBSOLETE
- Datasheet
- LM5143QRWGTQ1 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM5143QRWGTQ1?
- AEC-Q100 Grade 1 automotive qualification ensures reliable operation from -40°C to +150°C in harsh vehicle environments
- Wide 3.5 V to 65 V input range accommodates 12 V and 48 V automotive battery rails including cold-crank and load-dump transients
- Dual 2-phase current-mode PWM architecture reduces output ripple and improves transient response for demanding processor power rails
- Low quiescent current design extends idle-mode efficiency in always-on automotive ECU and ADAS subsystems
What is LM5143QRWGTQ1 used for?
The LM5143QRWGTQ1 is designed for automotive power management in ADAS processors, infotainment SoCs, and body control modules that require regulated 5 V or adjustable outputs from a 12 V or 48 V vehicle battery. Its AEC-Q100 Grade 1 rating and -40°C to +150°C operating range make it suitable for under-hood and near-powertrain ECU applications subject to wide temperature swings and load-dump events. The dual 2-phase topology also supports high-current, low-ripple rails needed by FPGA and high-performance DSP power domains in next-generation automotive compute platforms.
What are the specifications of LM5143QRWGTQ1?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | ALSO AVAILABLE VOUT= 5V; ADJ O/P VOLTAGE= 0.6V TO 55V |
| Analog IC - Other Type | DUAL SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 65V |
| Input Voltage-Min | 3.5V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | S-PQCC-N40 |
| Number of Functions | 1 |
| Output Voltage-Nom | 3.3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Screening Level | AEC-Q100 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 2500kHz |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| 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 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the LM5143QRWGTQ1 datasheet?
LM5143QRWGTQ1 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM5143QRWGTQ1?
Compatible alternatives and drop-in replacements for LM5143QRWGTQ1:
Switching Controller, Current-mode, 40A, 2200kHz Switching Freq-Max, BICMOS, PQCC40
Dual Switching Controller, Current-mode, 40A, 2200kHz Switching Freq-Max, BICMOS, PQCC40
Frequently Asked Questions
What input voltage range does the LM5143QRWGTQ1 support for automotive battery applications?
The LM5143QRWGTQ1 accepts inputs from 3.5 V to 65 V, covering both conventional 12 V automotive battery rails and 48 V mild-hybrid systems, and it can tolerate automotive load-dump transients without requiring external clamping components in most standard ECU designs.
How does the 2-phase topology of the LM5143QRWGTQ1 improve output quality compared to single-phase controllers?
By interleaving two buck phases 180 degrees out of phase, the LM5143QRWGTQ1 doubles the effective ripple frequency seen at the output, reducing output voltage ripple amplitude and allowing smaller output capacitors — typically achieving sub-5 mV ripple at several amps of load on a well-designed 5 V rail.
What automotive qualification grade does the LM5143QRWGTQ1 carry and what temperature range does it cover?
The LM5143QRWGTQ1 carries AEC-Q100 Grade 1 qualification, meaning it is tested and guaranteed for operation from -40°C to +150°C junction temperature, which qualifies it for under-hood automotive applications including engine control units, transmission controllers, and high-temperature ADAS processing modules.
Can the LM5143QRWGTQ1 regulate adjustable output voltages, and what is the minimum output?
Yes, the LM5143QRWGTQ1 supports adjustable output voltage down to 0.6 V minimum, set via an external resistor divider, and can also be configured for fixed 5 V outputs; this flexibility allows a single device to power multiple voltage domains from 0.6 V core rails up to 55 V in appropriate circuit topologies.
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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.
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