TPS55165QPWPTQ1 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
TPS55165QPWPTQ1 is an automotive-grade PWM current-mode buck-boost switching regulator with 2 V to 36 V input range by Texas Instruments. Key specs: 12 V regulated output, 2.2 MHz switching frequency, HTSSOP-20 package. From $3.90, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 21
- Lifecycle
- ACTIVE
- Datasheet
- TPS55165QPWPTQ1 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.8336(MOQ 10)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TPS55165QPWPTQ1?
- 2 V to 36 V wide input range covers 12 V and 24 V automotive battery rails including cold-crank (down to 2 V) and load-dump (up to 36 V) transients
- Fixed 12 V output regulated via current-mode PWM control at 2.2 MHz, allowing small 4.7 µH inductors and ceramic output capacitors
- AEC-Q100 automotive qualification and -40°C to +125°C operation for under-hood and infotainment power supply applications
What is TPS55165QPWPTQ1 used for?
TPS55165QPWPTQ1 provides a regulated 12 V output in automotive systems powered from a 12 V lead-acid or 24 V truck battery, maintaining regulation through engine start-stop events where the rail drops below 6 V. It suits infotainment head units, ADAS domain controllers, and telematics modules needing a stable 12 V rail from a wide-range vehicle bus. The 2.2 MHz switching frequency pushes switching noise above the AM radio band, simplifying EMI filter design.
What are the specifications of TPS55165QPWPTQ1?
| Pbfree Code | Yes |
| Date Of Intro | 2017-11-29 |
| YTEOL | 15 |
| Additional Feature | ALSO VOUT=12 VOLT |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 36V |
| Input Voltage-Min | 2V |
| Input Voltage-Nom | 14V |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 1A |
| Output Voltage-Max | 12V |
| Output Voltage-Min | 5V |
| Output Voltage-Nom | 5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Screening Level | AEC-Q100 |
| Surface Mount | YES |
| Switcher Configuration | BUCK-BOOST |
| Switching Frequency-Max | 2000kHz |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| 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 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Taiwan |
Where can I find the TPS55165QPWPTQ1 datasheet?
TPS55165QPWPTQ1 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TPS55165QPWPTQ1?
Compatible alternatives and drop-in replacements for TPS55165QPWPTQ1:
Switching Regulator, Current-mode, 1A, 2000kHz Switching Freq-Max, BICMOS, PDSO20
Frequently Asked Questions
How does TPS55165QPWPTQ1 maintain 12 V output during an automotive cold-crank event where the battery drops to 2 V?
TPS55165QPWPTQ1 operates as a boost converter when input voltage falls below 12 V, seamlessly transitioning between buck and boost modes. It continues regulating the 12 V output down to a 2 V input, covering the full cold-crank dip seen on 12 V lead-acid batteries during engine start in temperatures as low as -40°C.
What switching frequency does TPS55165QPWPTQ1 use and how does it affect inductor selection?
TPS55165QPWPTQ1 switches at 2.2 MHz, enabling the use of a compact 4.7 µH inductor versus the 22 µH to 47 µH inductors required at 400 kHz. Smaller inductors reduce both PCB footprint and bill-of-materials cost in the power stage, while the high frequency pushes EMI above the 1710 kHz AM radio band upper limit.
What is the maximum input voltage TPS55165QPWPTQ1 can withstand, and does it cover automotive load-dump transients?
TPS55165QPWPTQ1 accepts input voltages up to 36 V continuous, directly covering the ISO 7637-2 load-dump pulses up to 35 V that occur when a battery cable is disconnected on a running engine. No external transient voltage suppressor is required for standard 12 V automotive environments, simplifying the input protection circuit.
In which automotive module is TPS55165QPWPTQ1 most cost-effective compared to a discrete buck-boost design?
TPS55165QPWPTQ1 is most cost-effective in ADAS domain controllers and telematics units where the 12 V output powers 6 to 8 peripherals simultaneously, because its integrated current-mode PWM controller eliminates 4 to 6 discrete compensation components. At a 2 A to 3 A output current level, the single-IC solution saves approximately 15 mm² of board area versus a discrete design using a separate controller IC and external MOSFET.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 10+ | $6.9310 | $69.31 |
| 25+ | $6.4316 | $160.79 |
| 36+ | $5.5772 | $200.78 |
| 47+ | $5.3913 | $253.39 |
| 63+ | $4.8336 | $304.52 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit