LM3671MF-1.375/NOPBIn StockTexas Instruments
LM3671MF-1.375/NOPB is a 2MHz, 600mA step-down DC-DC converter from Texas Instruments. It operates from 2.7V to 5.5V input with voltage-mode PWM control in a compact SOT-23-5 package. Ideal for portable devices, battery-powered applications, and low-power embedded systems.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- LM3671MF-1.375/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 2MHz switching frequency enables use of small external components, reducing total solution size
- 600mA continuous output current supports a wide range of low-power loads
- Wide input voltage range of 2.7V to 5.5V suits single-cell Li-ion and USB-powered designs
- Voltage-mode PWM control with pulse frequency modulation (PFM) option for improved light-load efficiency
- Ultra-compact SOT-23-5 package ideal for space-constrained portable and wearable applications
Applications
The LM3671MF-1.375/NOPB is well-suited for battery-powered portable electronics such as smartphones, wearables, and handheld medical devices where compact size and high efficiency are critical. Its 2.7V–5.5V input range makes it a natural fit for single-cell lithium-ion battery systems and USB-powered IoT nodes. The PFM capability also makes it attractive for always-on low-power applications that demand minimal quiescent current.
Specifications
| Pbfree Code | Yes |
| Reach Compliance Code | Compliant |
| YTEOL | 15 |
| Additional Feature | PULSE FREQUENCY MODULATION TECHNIQUE IS ALSO POSSIBLE |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 2.7V |
| Input Voltage-Nom | 3.6V |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 0.6A |
| Output Voltage-Max | 3.3V |
| Output Voltage-Min | 1.1V |
| Output Voltage-Nom | 1.375V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 2600kHz |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.953mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| ## LM3671MF-1.375/NOPB Alternates Showing results | Image |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM3671MF-1.375/NOPB:
suggested
Frequently Asked Questions
What is the input voltage range of the LM3671MF-1.375/NOPB?
The LM3671MF-1.375/NOPB accepts an input voltage from 2.7V to 5.5V, making it compatible with single-cell Li-ion batteries (nominal 3.6V) and standard 5V USB power rails.
What output voltage does the LM3671MF-1.375/NOPB provide?
This variant is fixed at a 1.375V output voltage, optimized for powering low-voltage processors, FPGAs, and digital logic in battery-operated systems requiring a precise sub-1.5V rail.
What package does the LM3671MF-1.375/NOPB come in?
The LM3671MF-1.375/NOPB is available in a 5-pin SOT-23 (SOT-23-5) surface-mount package, which is extremely compact and suitable for space-constrained PCB designs in portable and wearable electronics.
Does the LM3671MF-1.375/NOPB support pulse frequency modulation (PFM)?
Yes, the LM3671MF-1.375/NOPB supports pulse frequency modulation (PFM) in addition to its primary PWM control mode, allowing improved efficiency at light loads — a key advantage for battery-powered IoT and wearable applications.
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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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