LTC3621IDCB-3.3#TRMPBF Analog Devices Integrated Circuit (Small Outline No-lead) In Stock
The LTC3621IDCB-3.3#TRMPBF is a 3.3V, 1A synchronous step-down DC/DC converter from Analog Devices in a compact 6-pin DFN package. It operates from 2.7V to 17V input with current-mode burst-mode control for high efficiency at light loads. Available from stock worldwide with competitive pricing.
- Manufacturer
- Analog Devices
- Package
- Small Outline No-lead
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- LTC3621IDCB-3.3#TRMPBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.8800(MOQ 19)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Burst-mode current-mode control achieves high efficiency at light loads, extending battery life in portable applications
- 2.7V to 17V input range supports 5V USB, 12V power adapters, and lithium battery sources in a single design
- Ultra-compact 6-pin DFN package minimizes board area for size-critical wearables, IoT nodes, and embedded modules
Applications
The LTC3621IDCB-3.3#TRMPBF is ideal for portable consumer electronics, IoT sensor nodes, and embedded computing modules that require a regulated 3.3V rail from Li-ion batteries, 5V USB, or 12V adapters. Its burst-mode operation at light loads makes it particularly effective in battery-powered designs where quiescent current must be minimized to maximize run time.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1715 |
| YTEOL | 10 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | BURST MODE |
| Input Voltage-Max | 17V |
| Input Voltage-Min | 2.7V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PDSO-N6 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 1A |
| Output Voltage-Max | 17V |
| Output Voltage-Min | 0.6V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC6,.12,20 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 1160kHz |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does the LTC3621IDCB-3.3#TRMPBF support, and which power sources is it compatible with?
The LTC3621IDCB-3.3#TRMPBF operates from an input voltage range of 2.7V to 17V, making it compatible with single-cell Li-ion batteries (3.0V to 4.2V), 5V USB power, and 12V wall adapters. This wide range allows a single PCB design to accommodate multiple power source options without component changes.
How does burst-mode control in LTC3621IDCB-3.3#TRMPBF improve battery life in IoT applications?
The LTC3621IDCB-3.3#TRMPBF uses current-mode burst-mode control that automatically reduces switching frequency at light loads, dramatically cutting switching losses and quiescent current draw. In IoT sensor nodes that spend most of their time in sleep mode drawing only a few milliamps, burst-mode operation can extend battery life by 30% or more compared to fixed-frequency regulators running continuously at full frequency.
What package does LTC3621IDCB-3.3#TRMPBF use, and how does it affect PCB layout?
The LTC3621IDCB-3.3#TRMPBF comes in a 6-pin DFN (Dual Flat No-lead) package, which measures approximately 2x2 mm with an exposed pad for thermal dissipation. This small footprint allows the complete 3.3V/1A power supply, including inductor and capacitors, to fit within a 100 mm² area, enabling compact layouts for wearables and miniaturized embedded modules.
When would LTC3621IDCB-3.3#TRMPBF be chosen over a linear LDO regulator for a 3.3V rail?
The LTC3621IDCB-3.3#TRMPBF is preferred over an LDO when input voltage is significantly higher than 3.3V, such as from a 12V rail, because its synchronous buck topology achieves efficiencies above 90% versus an LDO's potentially low efficiency of only 27% at that ratio. For 1A loads from a 12V input, switching to LTC3621IDCB-3.3#TRMPBF reduces power dissipation from approximately 8.7W (LDO) to under 0.9W, preventing thermal issues and reducing heatsinking requirements.
Related Guides
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
Why Buy from FindMyChip
About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
More from Analog Devices
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 19+ | $5.1400 | $97.66 |
| 250+ | $4.2257 | $1056.43 |
| 500+ | $4.2125 | $2106.25 |
| 1000+ | $3.8800 | $3880.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”