RO-3.305S RECOM Power Power Supply (Other) In Stock
RECOM Power RO-3.305S is an unregulated DC-DC power supply module with a nominal 3.3 V input (2.97 V to 3.63 V range) in a compact SIP-4 package. Features single-output operation with up to 15% load regulation for non-critical power conversion. Ideal for voltage conversion and power conditioning in embedded systems and IoT designs.
- Manufacturer
- RECOM Power
- Package
- Other
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- RO-3.305S Datasheet PDF
- Category
- Power Supply
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Nominal 3.3 V input range (2.97 V min to 3.63 V max) designed for direct 3.3 V rail operation
- Single-output unregulated DC-DC conversion in a compact SIP-4 through-hole module
- Up to 15% load regulation suitable for resistive and low-sensitivity analog loads
- SIP-4 (single-inline-package) form factor enables simple vertical PCB mounting with minimal footprint
- REACH-compliant construction ensures suitability for RoHS and green electronics programs
Applications
The RO-3.305S is used in embedded systems and industrial control boards where a simple, low-component-count DC-DC conversion from a 3.3 V source is needed without the complexity of a regulated converter design. Its SIP-4 package allows vertical PCB mounting in space-constrained enclosures and is often found in sensor nodes, communication modules, and IoT edge devices powered directly from 3.3 V microcontroller rails. The unregulated topology keeps cost low for applications tolerant of ±15% output variation under varying load conditions.
Specifications
| Reach Compliance Code | Compliant |
| YTEOL | 5 |
| Analog IC - Other Type | DC-DC UNREGULATED POWER SUPPLY MODULE |
| Input Voltage-Max | 3.63V |
| Input Voltage-Min | 2.97V |
| Input Voltage-Nom | 3.3V |
| JESD-30 Code | R-XSMA-P4 |
| Load Regulation-Max | 15% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 0.2A |
| Output Voltage-Max | 5.25V |
| Output Voltage-Min | 4.75V |
| Output Voltage-Nom | 5V |
| Package Body Material | UNSPECIFIED |
| Package Equivalence Code | SIP4,.18 |
| Package Shape | RECTANGULAR |
| Package Style | MICROELECTRONIC ASSEMBLY |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Qualification Status | Not Qualified |
| Surface Mount | NO |
| Technology | HYBRID |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | PIN/PEG |
| Terminal Pitch | 2.54mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Total Power Output-Max | 1W |
| Trim/Adjustable Output | NO |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| Country of Origin | Mainland China, Taiwan |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for RO-3.305S:
Frequently Asked Questions
What input voltage range does the RO-3.305S accept, and how does this affect system design?
The RO-3.305S accepts an input voltage from 2.97 V minimum to 3.63 V maximum, centered on a nominal 3.3 V supply. This ±10% tolerance matches the output tolerance of most 3.3 V LDO regulators and switching supplies, allowing direct connection to a 3.3 V system rail without additional input filtering or pre-regulation in most embedded system designs.
What does the 15% maximum load regulation figure of the RO-3.305S imply for output voltage stability?
A 15% maximum load regulation means the output voltage can shift by up to 15% between no-load and full-load conditions. For example, if the nominal output is 5 V, the output could drop to as low as 4.25 V at full load. This level of regulation is acceptable for digital logic and microcontroller I/O power rails but may be insufficient for precision analog circuits requiring better than ±5% supply accuracy.
Why would a designer choose the SIP-4 package of the RO-3.305S over an SMD power module?
The SIP-4 (single-inline 4-pin) through-hole package is preferred when the module must stand upright on the PCB to minimize footprint while the body extends above the board surface, which improves thermal convection in enclosed chassis designs. It is also easier to hand-solder during prototyping and rework compared to LGA or SMD power modules, and the 0.1 inch (2.54 mm) pin pitch is compatible with standard perfboard and DIP sockets for rapid evaluation.
In what type of IoT or embedded application does the RO-3.305S provide the best cost-performance trade-off?
The RO-3.305S delivers the best cost-performance ratio in battery-powered IoT sensor nodes and communication sub-modules where the primary 3.3 V rail is already regulated by a system PMIC, and a secondary lower voltage (such as 1.8 V or 2.5 V) is needed for a peripheral with a modest current draw under 100 mA. The unregulated topology reduces component count compared to an LDO or buck converter, saving both board space and bill-of-materials cost in designs that can tolerate the 15% output variation.
Related Guides
ECMF02-4CMX8 Common-Mode Filter with ESD Protection: Selection Guide
Compare ECMF02-4CMX8 vs ECMF02-2AMX6, ECMF04-4HSM10, and other ST ECMF filters. Choose the right 4-channel common-mode filter with ESD protection for USB 2.0.
Jun 20, 2026
AD5204 Quad Digital Potentiometer Selection Guide (2026)
How to choose the right AD5204 quad digital potentiometer: compare 10kΩ vs 100kΩ variants, TSSOP vs SOIC packages, and SPI interface options for your design.
Jun 20, 2026
0402 10uF X5R Decoupling Design Guide for Compact Digital Rails
Application note for using CL05A106MP5NUNC-class 0402 10uF X5R MLCCs in compact digital rail decoupling designs.
Jun 19, 2026
How to Choose an 0805 10uF MLCC for Decoupling and Bulk Capacitance
Selection guide for choosing 0805 10uF MLCCs around CL21A106KOQNNNE, covering derating, dielectric, package, and sourcing checks.
Jun 19, 2026
Why Buy from FindMyChip
About RECOM Power
RECOM Power is a leading electronic component manufacturer. FindMyChip sources RECOM Power ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”