LM2734YQMK Texas Instruments Integrated Circuit (Other) In Stock
Texas Instruments LM2734YQMK is a current-mode PWM step-down DC-DC switching regulator operating from 3 V to 20 V input with adjustable output from 0.8 V to 18 V, in a 6-pin SOT-23 package. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 6
- Lifecycle
- OBSOLETE
- Datasheet
- LM2734YQMK Datasheet PDF
- Category
- Integrated Circuit
- 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 LM2734YQMK?
- Wide 3 V to 20 V input range with adjustable 0.8 V to 18 V output covers diverse regulated power applications from battery to automotive bus rails
- Current-mode PWM control provides inherent cycle-by-cycle current limiting and fast load-transient response without complex external compensation
- Compact 6-pin SOT-23 (PDSO-G6) package enables minimal footprint point-of-load designs in space-constrained boards
What is LM2734YQMK used for?
The LM2734YQMK is designed for point-of-load buck regulation in embedded systems, industrial controllers, and automotive electronics where a wide input range from 3 V to 20 V and a regulated adjustable output down to 0.8 V are required. Its adjustable output mode allows it to power FPGA core rails, DSP supplies, and microcontroller VCC from a single 12 V or 5 V bus. The device also suits portable equipment running from Li-ion or three-cell NiMH batteries where compact size and high conversion efficiency extend battery runtime.
What are the specifications of LM2734YQMK?
| Pbfree Code | No |
| YTEOL | 0 |
| Additional Feature | ALSO OPERATES IN ADJUSTABLE MODE FROM 0.8 TO 18V |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 20V |
| Input Voltage-Min | 3V |
| Input Voltage-Nom | 5V |
| JESD-30 Code | R-PDSO-G6 |
| JESD-609 Code | e0 |
| Number of Functions | 1 |
| Output Current-Max | 2.5A |
| Output Voltage-Max | 18V |
| Output Voltage-Min | 0.8V |
| Output Voltage-Nom | 5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 660kHz |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | TIN LEAD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the LM2734YQMK datasheet?
LM2734YQMK Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM2734YQMK?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input and output voltage ranges does the LM2734YQMK support, and what applications does that span?
The LM2734YQMK accepts 3 V to 20 V input and produces an adjustable output from 0.8 V to 18 V via an external resistor divider. This wide range spans single Li-ion cells (3.6 V), 5 V USB rails, 12 V automotive and industrial buses, and 20 V adapter supplies. Point-of-load applications include FPGA core regulation at 1.0 V to 1.8 V, DSP supplies at 1.2 V, and 3.3 V logic rails from a 12 V bus.
How does current-mode PWM control in LM2734YQMK benefit converter stability compared to voltage-mode control?
Current-mode PWM control in the LM2734YQMK feeds inductor current back to the comparator on every switching cycle, providing inherent first-order current limiting and reducing the output filter transfer function by one pole. This simplifies loop compensation, typically allowing a single feedforward capacitor of 100 pF across the upper feedback resistor to achieve stable operation, and improves load-step response by 2x to 3x compared to voltage-mode designs at the same switching frequency.
What package does the LM2734YQMK use, and what external components are required for a complete buck regulator?
The LM2734YQMK is packaged in a 6-pin SOT-23 (R-PDSO-G6) measuring approximately 2.9 mm × 1.6 mm. A complete buck regulator requires an external inductor (typically 4.7 µH to 10 µH), input and output bulk capacitors (10 µF each), a catch diode rated for at least 1 A, and a 2-resistor feedback divider to set the output voltage. Total solution area is typically under 100 mm² including passives.
Is LM2734YQMK RoHS compliant, and what are the procurement considerations for automotive-grade sourcing?
The LM2734YQMK carries a Pb-free code of No, indicating it may be available in a leaded version. Designers targeting automotive or industrial RoHS-compliant builds should verify the NOPB (No Lead) suffix variant or confirm the JESD-609 lead-free code before purchasing. Standard YQMK suffix denotes a automotive-qualified (Q-grade) device, which undergoes AEC-Q100 qualification tests for temperature cycling and reliability over the -40°C to 125°C operating range.
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
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.”
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