LM3676SDX-1.5/NOPB Texas Instruments Integrated Circuit (Small Outline No-lead) In Stock
Texas Instruments LM3676SDX-1.5/NOPB is a 600 mA step-down DC-DC converter with a fixed 1.5 V output and 2 MHz switching frequency. It accepts inputs from 2.9 V to 5.5 V and operates across a -30°C to 85°C temperature range. Packaged in a compact 8-pin WSON for space-constrained portable and wireless designs.
- Manufacturer
- Texas Instruments
- Package
- Small Outline No-lead
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- LM3676SDX-1.5/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -30.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM3676SDX-1.5/NOPB?
- Fixed 1.5 V output at up to 600 mA continuous from a 2.9 V to 5.5 V input rail
- 2 MHz switching frequency minimizes external inductor and capacitor size for ultra-compact layouts
- Pulse-width modulation voltage-mode control for stable, low-noise regulation
- Mode-select pin enables forced PWM or automatic PFM for improved light-load efficiency
What is LM3676SDX-1.5/NOPB used for?
LM3676SDX-1.5/NOPB is optimized for point-of-load regulation in portable consumer electronics such as smartphones, tablets, and wireless IoT nodes requiring a 1.5 V core or I/O supply. Its 2 MHz switching frequency allows sub-millimeter-height inductors, making it attractive for ultra-thin wearable devices and wireless sensor nodes. The automatic PFM mode extends battery life under light loads in devices that spend most of their time in idle or sleep states.
What are the specifications of LM3676SDX-1.5/NOPB?
| Pbfree Code | No |
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 2.9V |
| Input Voltage-Nom | 3.6V |
| JESD-30 Code | R-XDSO-N8 |
| Number of Functions | 1 |
| Output Current-Max | 1.2A |
| Output Voltage-Nom | 1.5V |
| Package Body Material | UNSPECIFIED |
| Package Equivalence Code | SOLCC8,.11,20 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 2600kHz |
| Temperature Grade | OTHER |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline No-lead |
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 LM3676SDX-1.5/NOPB datasheet?
LM3676SDX-1.5/NOPB Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM3676SDX-1.5/NOPB?
Compatible alternatives and drop-in replacements for LM3676SDX-1.5/NOPB:
Frequently Asked Questions
What input voltage range does the LM3676SDX-1.5/NOPB support, and what is its fixed output voltage?
The LM3676SDX-1.5/NOPB accepts an input voltage between 2.9 V and 5.5 V and delivers a fixed regulated 1.5 V output at up to 600 mA. This range covers single-cell lithium-ion batteries (2.9 V to 4.2 V) and standard 5 V USB power sources, making it versatile for both battery-operated and USB-powered portable designs.
How does the 2 MHz switching frequency of the LM3676SDX-1.5/NOPB benefit PCB layout?
Operating at 2 MHz allows the LM3676SDX-1.5/NOPB to use a 1 µH to 2.2 µH inductor and a 10 µF output capacitor, both in small 0402 or 0603 packages. This reduces the total solution footprint to under 10 mm², which is critical for wearable devices and small IoT nodes where board area is severely constrained.
For a Bluetooth LE beacon running mostly in sleep mode, how does the mode-control pin improve battery life?
In automatic PFM mode, the LM3676SDX-1.5/NOPB switches only as needed at light loads, dropping quiescent current below 55 µA. For a Bluetooth LE beacon drawing under 1 mA during sleep, this PFM operation can extend a 200 mAh coin cell runtime by 30 to 40 percent compared to forced-PWM operation at fixed 2 MHz.
What external components are required for the LM3676SDX-1.5/NOPB, and how compact is the full solution?
A typical LM3676SDX-1.5/NOPB application requires one 2.2 µH inductor, a 10 µF input ceramic capacitor, and a 22 µF output ceramic capacitor. The 8-pin WSON package measures 2 mm x 2 mm, and the total bill-of-materials is just 4 components, fitting the entire power supply into roughly 15 mm² of 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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