BL1117-50CX
Microne BL1117-50CX (LDO Linear Regulator) applies to system regulation, battery charging and power conversion. Original genuine guarantee; electrical characteristics, pinout and package per the official Datasheet. Quotes, sample requests and stock availability welcome.
- Package
- SOT-223
Product overview
Microne BL1117-50CX (LDO Linear Regulator) applies to system regulation, battery charging and power conversion. Original genuine guarantee; electrical characteristics, pinout and package per the official Datasheet. Quotes, sample requests and stock availability welcome.
- Manufacturer
- Microne
- Part number
- BL1117-50CX
- Category
- LDO Linear Regulators
- Package
- SOT-223
- Condition
- New & Original
- Lifecycle
- Confirm with manufacturer
- Lead time / MOQ
- Confirm with quotation
Technical parameters
30 parametersConstruction
- (Junction to ambient)
- 56
- ±1% BL1117-3.3V
- 3.3 V
- Output ±2% VIN=5.3V, IOUT=10mA
- 3.3 V
- ±2% VIN=7V, IOUT=10mA
- 5 V
- IOUT=100mA
- 1.23 V
- IOUT =1A
- 1.3 V
- BL1117-1.2V, VIN=10V
- 2 mA
- BL1117-1.5V, VIN=11V
- 2 mA
- BL1117-1.8V, VIN=12V
- 2 mA
- BL1117-3.3V, VIN=12V
- 2 mA
- BL1117-5.0V, VIN=12V
- 2 mA
- BL1117-12.0V, VIN=20V
- 2 mA
- ICHANGE IADJ change
- 0.2 uA
Performance
- Maximum input voltage
- 18 V
- Maximum operating junction temperature (TJ)
- 150 C
- Ambient temperature (TA) -4
- 0 ~ +125 C
- Thermal resistance (θJA)
- 70
- Storage temperature -4
- 0 ~ +150 C
- Lead temperature & time
- 260C, 10s
- Input voltage range
- 16 V
- Operating ambient temperature(TA)
- 125 C
- Reference voltage
- 1.25 V
- voltage ±1% BL1117-5.0V
- 5 V
- VDROP Dropout voltage IOUT=500mA
- 1.26 V
- ILIMIT Current limit VIN-VOUT=2V, TJ=25°C
- 1 A
- SVR Supply voltage rejection f=120Hz, VIN−VOUT=3V+1VP-P
- 60 dB
- IMIN Minimum load current BL1117-ADJ
- 2 mA
- IQ Quiescent current BL1117-2.5V, VIN=12V
- 2 mA
- IADJ Adjust pin current
- 55 uA
- ΔV/ΔT Temperature coefficient
- ±100 pm/°C
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 BL1117-50CX?
BL1117-50CX is a SOT-223 LDO, 1 A, up to 3.3 V. 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.