LM3743MMX-300 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
High-performance synchronous buck controller with comprehensive fault protection in a 10-VSSOP package. Supports input voltages from 3 V to 5.5 V and voltage-mode PWM control. Available from Texas Instruments with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 10
- Lifecycle
- OBSOLETE
- Datasheet
- LM3743MMX-300 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 LM3743MMX-300?
- Voltage-mode PWM control with input range 3 V to 5.5 V for flexible power rail support
- Comprehensive fault protection including OVP, OCP, and thermal shutdown
- Compact 10-VSSOP package enabling high-density PCB layouts
- Wide operating temperature range from -40°C to 125°C for industrial environments
What is LM3743MMX-300 used for?
The LM3743MMX-300 is suited for point-of-load DC-DC conversion in servers, networking equipment, and industrial control systems requiring tightly regulated 3.3 V or 5 V rails. Its robust fault protection features make it ideal for applications where power integrity and system uptime are critical, such as telecom infrastructure and embedded computing boards.
What are the specifications of LM3743MMX-300?
| Pbfree Code | No |
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 3V |
| Input Voltage-Nom | 3.3V |
| JESD-30 Code | S-PDSO-G10 |
| JESD-609 Code | e0 |
| Number of Functions | 1 |
| Output Current-Max | 20A |
| Output Voltage-Min | 0.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP10,.19,20 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 3mA |
| Surface Mount | YES |
| Switcher Configuration | PUSH-PULL |
| Switching Frequency-Max | 345kHz |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | TIN LEAD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the LM3743MMX-300 datasheet?
LM3743MMX-300 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM3743MMX-300?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does the LM3743MMX-300 support for synchronous buck designs?
The LM3743MMX-300 accepts input voltages from 3 V to 5.5 V, with a nominal operating point of 3.3 V, making it compatible with standard logic supply rails in server and networking boards. This 3 V to 5.5 V range provides flexibility across diverse power architectures.
Which fault protection mechanisms are integrated in the LM3743MMX-300?
The controller includes comprehensive fault protection such as overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown, all within its 10-pin VSSOP package. These features guard against common power-supply failure modes across the full -40°C to 125°C operating temperature range.
For a space-constrained industrial board, how compact is the LM3743MMX-300 package?
The LM3743MMX-300 is housed in a 10-VSSOP package, which measures approximately 3 mm × 3 mm, enabling high-density placement on PCBs with tight real-estate constraints. This small footprint is especially beneficial in embedded and telecom designs where board space is limited.
When would a designer choose voltage-mode PWM control over current-mode in a buck converter?
Voltage-mode PWM control, used by the LM3743MMX-300, simplifies compensation and offers excellent noise immunity at switching frequencies typically ranging from 200 kHz to 1 MHz. It is preferred when output voltage accuracy and robust fault response matter more than transient response speed, for example in 3.3 V logic supplies delivering up to several amperes.
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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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