RS3217F-3.3XF5
Runic · LDO Linear Regulators
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SOT-23-5 · Generic package illustration
Based on the catalogue package field; not verified for this part. Check manufacturer documentation for dimensions, polarity and pinout.View part documentation ↓- Package
- SOT-23-5
Product overview
Runic LDO Linear Regulators RS3217F-3.3XF5 is a genuine original component suitable for circuit design and volume procurement. We supply full specifications, datasheets and flexible pricing, supporting both prototype and long-term supply.
- Manufacturer
- Runic
- Part number
- RS3217F-3.3XF5
- Category
- LDO Linear Regulators
- Package
- SOT-23-5
- Condition
- New & Original
- Lifecycle
- Confirm with manufacturer
- Lead time / MOQ
- Confirm with quotation
Technical parameters
44 parametersConstruction
- XDFN1X1-4
- 315
- Human-Body Model (HBM), MIL-STD-883K METHOD 3015.9
- ±4000
- Charged-Device Model (CDM), ANSI/ESDA/JEDEC JS-002-2022
- ±1500
- DC Output Accuracy (1) ΔVOUT TJ = 25°C
- 1 %
- Line Regulation (1) ΔVOUT(ΔVIN) VIN=2.8 to 5.5V, IOUT=1mA
- 0.01 %/V
- Load Regulation ΔVOUT(ΔIOUT) IOUT=1mA to 500mA
- 5 mV
- IOUT = 1mA, TJ = -40°C ~125°C
- 60 ppm/°C
- VIN=2.8 to 5.5V in 30μs
- 1 mV
- VIN=5.5 to 2.8V in 30μs
- 1 mV
- IOUT=1mA to 500mA in 10μs
- 25 mV
- IOUT=500mA to 1mA in 10μs
- 25 mV
- VOUT=1.2V
- 700
- VOUT=1.8V
- 320
- VOUT=3.3V
- 220
- VOUT=4.2V
- 190
- f=100Hz, IOUT=20mA
- 78 dB
- f=1kHz, IOUT=20mA
- 77 dB
- Power Supply Rejection Ratio PSRR (3) f=10kHz, IOUT=20mA
- 77 dB
- f=100kHz, IOUT=20mA
- 68 dB
- f=1MHz, IOUT=20mA
- 60 dB
- BW=10Hz to 100kHz, IOUT=1mA
- 18 μVRMS
- BW=10Hz to 100kHz, IOUT=500mA
- 17 μVRMS
- VIN=5.5, VEN = 0V
- 0.001 μA
- VIN=5.5, VEN = 5.5V
- 0.6 μA
Performance
- VIN Input voltage
- 6 V
- VEN Enable input voltage
- 6 V
- VOUT Output voltage
- 0.3 V
- TJ Junction temperature
- 150 °C
- Tstg Storage temperature
- 150 °C
- Load Temperature (Soldering, 10sec)
- 260 °C
- VIN Input Voltage Range on IN 1
- 5.5 V
- VOUT Output Voltage Range on OUT 1
- 4.2 V
- VEN Input Voltage Range on
- 5.5 V
- IOUT Output Current Range on
- 500 mA
- TJ Junction Temperature
- 125 °C
- Input Voltage
- 5.5 V
- Quiescent Current IQ VEN=1.2V, IOUT=0mA
- 20 μA
- Ground Pin Current IGND VEN=1.2V, IOUT=500mA
- 275 μA
- Shutdown Current ISD VEN = 0V, VIN=5.5V
- 0.01 μA
- Output Voltage Range
- 4.2 V
- Maximum output current
- 500 mA
- Dropout Voltage (2) VDO IOUT=500mA VOUT=2.8V
- 230 mV
- EN Input Logic High Voltage
- 1.2 V
- EN Input Logic Low Voltage
- 0.4 V
Specifications & documentation
Use the official manufacturer documentation to verify electrical characteristics, package dimensions and operating limits before design approval.
Frequently asked questions
Common pre-quotation questions and selection notes to help you verify key parameters and sourcing before requesting a quote.
What is a drop-in replacement for RS3217F-3.3XF5?
RS3217F-3.3XF5 is a SOT-23-5 LDO, 0.3 V, up to 500 mA. Pin-compatible families include LM1117 / NCP1117 / LD1117 (same SOT-223 or TO-252 footprint). Match dropout voltage and the output-capacitor ESR rule before swapping.
LDO or DC-DC — which should I use?
Use an LDO for low-current, noise-sensitive rails (analog / RF, small ΔV). Use a DC-DC (buck) when the input-output voltage gap is large or efficiency / battery life matters. A common hybrid: DC-DC first, then LDO to clean the rail.
What output capacitor ESR does it require?
Legacy 1117-class LDOs need output-cap ESR between 0.3 Ω and 22 Ω; all-ceramic caps (very low ESR) can oscillate — add a 1–3 Ω series resistor or a small electrolytic. Modern LDOs are stable with low-ESR MLCCs.
How do I verify the part is genuine / avoid counterfeit?
Buy only from authorized or franchised channels. On receipt, check: (1) laser-etched markings that solvent will not remove; (2) batch / lot code consistent between label and device; (3) original reel or tube packaging; (4) request traceability documents (CoC, date code). For critical parts, third-party X-ray / decapsulation testing is recommended.
How do I read the markings / date code on a chip?
Most active ICs use a 4-digit date code YYWW (year + week, e.g. 2345 = 2023 week 45). The top mark is manufacturer logo + base part number + lot code. For SMD code lookup, search by "marking code + package" on AllDataSheet / Octopart / LCSC.
What does the package code mean (TO-220, SOT-23, QFP…)?
Package codes describe the physical form factor and pin layout — critical when sourcing, because electrically equivalent parts in different packages will not fit the PCB. Common: TO-220 (3-terminal power), SOT-23 (3-pin small signal), DIP / SOIC (through-hole / SMD ICs), QFP / QFN (MCUs, processors).
What if my original model is discontinued (EOL / NRND)?
Three options: (1) the manufacturer’s recommended replacement; (2) franchised distributor legacy stock; (3) a functionally compatible cross-brand part — provided pinout and key parameters match. Always evaluate on a real board before mass swap.
What is the minimum order quantity (MOQ) and lead time?
We support both sample and volume orders. Minimum order quantity, stock availability and lead time are confirmed per inquiry — tell us your model and quantity and we will quote. Sample quantities for design validation are supported.
Can I get the datasheet and samples?
The full datasheet is linked on this page. For parts without a direct datasheet, we can locate the manufacturer document on request. Sample requests are supported — contact us with your model and quantity.
Request confirmation of current stock, date code, packaging, price and delivery terms. Product information does not constitute a binding offer; final specifications are confirmed with your quotation.