LM3671MF-1.8In StockTexas Instruments
LM3671MF-1.8 is a synchronous step-down DC-DC converter with 1.8V fixed output, 600mA current capability, and 2.7V–5.5V input range. Features PWM/PFM control for high efficiency. From $0.44, in stock, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 5
- Lifecycle
- OBSOLETE
- Datasheet
- LM3671MF-1.8 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4385(MOQ 295)
- Temp Range
- -30.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 1.8V output voltage with tight regulation accuracy
- 600mA output current with synchronous rectification for high efficiency
- Wide 2.7V–5.5V input voltage range suits single-cell Li-Ion and USB applications
- Pulse Frequency Modulation (PFM) mode for improved light-load efficiency
- Compact SOT-23-5 package ideal for space-constrained portable designs
Applications
The LM3671MF-1.8 is well suited for portable consumer electronics such as smartphones, tablets, and wearables where a regulated 1.8V rail is required for processors, memory, or RF modules. Its wide input range makes it compatible with single-cell Li-Ion batteries and USB power sources, while the combined PWM/PFM control extends battery life under varying load conditions. It is also commonly used in IoT sensors, medical handhelds, and other battery-powered devices demanding compact, efficient power management.
Specifications
| Pbfree Code | No |
| YTEOL | 0 |
| 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 | e0 |
| Number of Functions | 1 |
| Output Current-Max | 1.15A |
| 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 | OTHER |
| 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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM3671MF-1.8:
Switching Regulator, Voltage-mode, 0.6A, 2600kHz Switching Freq-Max, PDSO5
Frequently Asked Questions
What is the output voltage and current rating of the LM3671MF-1.8?
The LM3671MF-1.8 provides a fixed 1.8V output voltage and supports a maximum output current of 600mA, making it suitable for powering low-power processors, memory, and peripheral ICs in portable devices.
What input voltage range does the LM3671MF-1.8 support?
The LM3671MF-1.8 accepts an input voltage from 2.7V to 5.5V, with a nominal input of 3.6V. This range is compatible with single-cell Li-Ion/Li-Po batteries (3.0V–4.2V) as well as 5V USB power supplies.
What control technique does the LM3671MF-1.8 use, and how does it affect efficiency?
The LM3671MF-1.8 uses Pulse Width Modulation (PWM) as its primary control technique in voltage mode, and also supports Pulse Frequency Modulation (PFM) at light loads. PFM reduces switching losses and quiescent current when the load is low, significantly extending battery life in portable and IoT applications.
What package is the LM3671MF-1.8 available in, and is it RoHS compliant?
The LM3671MF-1.8 comes in a 5-pin SOT-23 (R-PDSO-G5) surface-mount package, which is compact and suitable for space-constrained PCB layouts. Note that the Pb-free code is listed as 'No', so confirm RoHS compliance requirements with your distributor before ordering for restricted applications.
What are typical applications for the LM3671MF-1.8?
Typical applications include smartphones, tablets, wearables, IoT sensor nodes, portable medical devices, and wireless modules that require an efficient, regulated 1.8V supply from a Li-Ion battery or USB source with minimal board space.
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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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