XLM5155QDSSTQ1 Texas Instruments Integrated Circuit (Small Outline No-lead) In Stock
Texas Instruments XLM5155QDSSTQ1 is an AEC-Q100 automotive-grade, current-mode PWM controller supporting boost, SEPIC, and flyback topologies at up to 2.2 MHz switching frequency, designed for wide input-voltage automotive power conversion. Packaged in a compact 12-pin WSON for space-constrained automotive power supplies.
- Manufacturer
- Texas Instruments
- Package
- Small Outline No-lead
- Pin Count
- 13
- Lifecycle
- OBSOLETE
- Datasheet
- XLM5155QDSSTQ1 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
Key Features
- AEC-Q100 automotive qualification for reliable operation in under-hood and infotainment power systems
- 2.2 MHz switching frequency enabling small external inductors and capacitors in boost, SEPIC, and flyback topologies
- Current-mode PWM control for fast transient response and built-in cycle-by-cycle current limiting
Applications
The XLM5155QDSSTQ1 is designed for automotive DC-DC power conversion including pre-boost regulators ahead of buck converters, SEPIC converters for automotive 12 V to regulated 5 V or 3.3 V rails, and isolated flyback supplies for CAN or LIN transceiver bias. Its AEC-Q100 certification makes it suitable for instrument clusters, ADAS sensor power rails, and body-control module power trees operating across the full automotive temperature range.
Specifications
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| JESD-30 Code | R-PDSO-N12 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, VERY THIN PROFILE |
| Screening Level | AEC-Q100 |
| Surface Mount | YES |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 2200kHz |
| Temperature Grade | AUTOMOTIVE |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for XLM5155QDSSTQ1:
Switching Controller, Current-mode, 15A, 2200kHz Switching Freq-Max, PDSO12
Switching Controller, Current-mode, 15A, 2200kHz Switching Freq-Max, BICMOS, PDSO12
Switching Controller, Current-mode, 15A, 2200kHz Switching Freq-Max, PDSO12
Frequently Asked Questions
How does the XLM5155QDSSTQ1 2.2 MHz switching frequency reduce passive component size in automotive boost designs?
At 2.2 MHz switching frequency, the required inductance and output capacitance for an automotive 12 V boost stage scale inversely with frequency, typically allowing inductors below 4.7 µH and ceramic output capacitors below 10 µF. This dramatically reduces component height and footprint versus 200 kHz designs, which is critical in densely packed automotive ECU modules with limited PCB real estate.
Which automotive power supply topologies can the XLM5155QDSSTQ1 control and what makes SEPIC topology useful in 12 V automotive systems?
The XLM5155QDSSTQ1 supports boost, SEPIC, and flyback topologies with current-mode PWM control. SEPIC is especially useful in automotive applications where the input voltage from 6 V to 18 V across cold-crank to load-dump may be above or below the 12 V regulated output; unlike a simple boost converter, SEPIC handles both step-up and step-down conditions in a single non-inverting stage, simplifying power tree design in start-stop vehicle systems.
What does AEC-Q100 qualification mean for the XLM5155QDSSTQ1 in terms of reliability and operating temperature?
AEC-Q100 Grade qualification subjects the XLM5155QDSSTQ1 to accelerated stress tests including high-temperature operating life, thermal cycling from -40 C to +125 C, humidity bias, and electrostatic discharge testing. This qualification ensures the controller meets automotive OEM reliability targets of several thousand hours HTOL and confirms it can withstand under-hood ambient temperatures without parametric drift in switching frequency or current-limit threshold.
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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.
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