LM3677TL-ADJ Texas Instruments Integrated Circuit (Other) In Stock
Texas Instruments LM3677TL-ADJ is an adjustable output step-down DC-DC converter with a 2.7 V to 5 V input voltage range. It uses PWM voltage-mode control with optional PFM for improved light-load efficiency in a compact 5-ball DSBGA package. Available in stock worldwide for portable and battery-powered power supply designs.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 5
- Lifecycle
- OBSOLETE
- Datasheet
- LM3677TL-ADJ 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 LM3677TL-ADJ?
- Adjustable output voltage step-down DC-DC converter supporting 2.7 V to 5 V input range
- PWM voltage-mode control with optional PFM technique for improved light-load efficiency
- Ultra-compact 5-ball DSBGA package for miniaturized power supply integration
- Current-mode control capability providing fast transient response
- Designed for portable and battery-powered applications requiring regulated step-down conversion
What is LM3677TL-ADJ used for?
The LM3677TL-ADJ is designed for portable consumer electronics, IoT sensor nodes, and handheld devices powered from lithium-ion or alkaline battery packs between 2.7 V and 5 V. Its adjustable output voltage and PFM light-load mode extend battery life in applications with widely varying load currents. The tiny DSBGA package enables integration into space-constrained PCBs such as smartwatches, Bluetooth modules, and miniaturized medical monitors.
What are the specifications of LM3677TL-ADJ?
| YTEOL | 0 |
| Additional Feature | CURRENT MODE CONTROL IS ALSO POSSIBLE IN PFM CONTROL TECHNIQUE |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 5V |
| Input Voltage-Min | 2.7V |
| Input Voltage-Nom | 3.6V |
| JESD-30 Code | R-PBGA-B5 |
| JESD-609 Code | e1 |
| Number of Functions | 1 |
| Output Current-Max | 1.375A |
| Output Voltage-Max | 3.3V |
| Output Voltage-Min | 1.2V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | GRID ARRAY, VERY THIN PROFILE, FINE PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 3500kHz |
| Temperature Grade | OTHER |
| Terminal Finish | TIN SILVER COPPER |
| Terminal Form | BALL |
| Terminal Pitch | 0.5mm |
| Terminal Position | BOTTOM |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| 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 LM3677TL-ADJ datasheet?
LM3677TL-ADJ Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM3677TL-ADJ?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input voltage range of the LM3677TL-ADJ and which battery chemistries does it support directly?
The LM3677TL-ADJ accepts input voltages from 2.7 V to 5 V, covering single-cell lithium-ion batteries (typically 3.0 V to 4.2 V), single-cell LiPo packs, and USB 5 V bus power. This broad range allows direct connection to common portable power sources without additional pre-regulation stages.
How does the PFM control option in the LM3677TL-ADJ extend battery life at light loads?
At light loads, the LM3677TL-ADJ can switch to pulse-frequency modulation (PFM) mode, reducing switching losses by firing pulses only as needed rather than maintaining a fixed frequency. This can reduce quiescent current substantially compared to continuous PWM operation, extending battery runtime in IoT nodes that spend most time in sleep mode drawing less than 1 mA.
For a Bluetooth Low Energy module requiring a 1.8 V rail from a 3.7 V LiPo cell, how is the LM3677TL-ADJ output voltage set?
The LM3677TL-ADJ output is adjustable via an external resistor divider connected to the feedback pin, allowing any output voltage below the input. For a 1.8 V output from a 3.7 V nominal LiPo input, resistor values are selected per the datasheet formula to set the feedback voltage at the reference level, typically 0.6 V, achieving approximately 51% conversion efficiency gain over an LDO at full load.
How small is the DSBGA package of the LM3677TL-ADJ compared to SOT-23-5 alternatives?
The 5-ball DSBGA (PBGA-B5) package of the LM3677TL-ADJ measures approximately 1 mm x 1.5 mm, significantly smaller than an SOT-23-5 which occupies about 2.9 mm x 1.6 mm. This size reduction of nearly 60% in footprint area is critical for smartwatch modules, hearing aids, and other wearable designs with strict PCB area budgets below 5 mm squared.
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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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