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Mean Well MDS01L-03 DC-DC Converter - 1W - 4.5~5.5V in 3.3V out 303mA
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MDS01L-03 is the 3.3V output model of this series: rated power 1W, typical efficiency 73%.
MDS01 and MDD01 series are 1W isolated and unregulated module type medical grade DC-DC converter with SIP7 package. It features international standard pins, a high efficiency up to 83%, wide working temperature range -40~+85℃, 6KVDC or 4.2KVAC I/P-O/P high isolation voltage, short circuit protection, etc. The models account for different input voltage 5V/12V/24V±10%, and various output voltage, 3.3V/ 5V/ 12 V/15V for single output and ±5V /±9 V/±12V/±15V for dual outputs, which are suitable for medical systems , ultra low leakage current.
Features
- SIP7 package with international standard pinout
- Operating temperature range -40 ~ +85℃
- Medical safety approved (1xMOPP/2xMOOP) according to ANSI/AAMI ES60601-1
- Low patient leakage current <2μA
- Protection: Short circuit(3 second max.)
- 6KVDC or 4.2KVAC hight I/O isolation (Reinforced isolation)
- Low cost
- 3 years warranty
Specifications
INPUT
- INPUT VOLTAGE (RANGE)
- Normal 5V (4.5 ~ 5.5V)
- VOLTAGE RANGE
- L: 4.5 ~ 5.5Vdc M: 10.8 ~ 13.2Vdc N: 21.6 ~ 26.4Vdc
- INPUT CURRENT (NO LOAD)
- 25mA
- INPUT CURRENT (FULL LOAD)
- 260mA
- SURGE VOLTAGE (100ms max.)
- 5Vin models : 9Vdc 12Vin models : 18Vdc 24Vin models : 30Vdc
- FILTER
- Internal capacitor
- PROTECTION
- Fuse recommended. 500mA Slow-Blow Type for all models
OUTPUT
- OUTPUT VOLTAGE
- 3.3V
- OUTPUT CURRENT
- 31 ~ 303mA
- EFFICIENCY (TYP.)
- 73%
- CAPACITOR LOAD (MAX.)* For each output
- 1000μF
- VOLTAGE ACCURACY
- ±5.0%
- RATED POWER
- 1W
- RIPPLE & NOISENote.2
- 75mVp-p
- LINE REGULATIONNote.3
- 1.2% for 1% input variation
- LOAD REGULATIONNote.4
- ±10%
- SWITCHING FREQUENCY (Typ.)
- 100KHz
PROTECTION
- SHORT CIRCUIT
- 3 second max.
ENVIRONMENT
- COOLING
- Free-air convection
- WORKING TEMP.
- -40 ~ +85℃ (Refer to "Derating Curve")
- WORKING HUMIDITY
- 20% ~ 90% RH non-condensing
- STORAGE TEMP., HUMIDITY
- -55 ~ +125℃, 10 ~ 95% RH non-condensing
- TEMP. COEFFICIENT
- 0.02% / ℃ (0 ~ 85℃)
- SOLDERING TEMPERATURE
- 1.5mm from case of 1 ~ 3sec./260℃ max.
- VIBRATION
- 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes
SAFETY & EMC
- SAFETY STANDARDS
- UL60601-1, EAC TP TC 020/2011 approved
- WITHSTAND VOLTAGE
- I/P-O/P:6KVDC or 4.2KVAC
- ISOLATION RESISTANCE
- I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH
- ISOLATION LEVEL
- Primary-secondary: 1xMOPP / 2xMOOP when system input voltage is with 250VAC, 50/60Hz
- ISOLATION CAPACITANCE (Typ.)
- 5pF
- EMC EMISSION
-
Parameter Standard Test Level Conducted BS EN/EN55011(CISPR11) Class B Radiated BS EN/EN55011(CISPR11) Class B - EMC IMMUNITY
-
Parameter Standard Test Level ESD BS EN/EN61000-4-2 Level 2, ±8KV contact
OTHERS
- MTBF
- 3500Khrs MIL-HDBK-217F(25℃)
- DIMENSION (L*W*H)
- 19.5*9.8*12.5mm (0.77*0.386*0.492 inch)
- CASE MATERIAL
- Non-Conductive black plastic (UL 94V-0 rated)
- PACKING
- 4.2g ; 25pcs/per tube, 3000pcs/120 tube/per carton
Test conditions and notes6
- 1.All parameters are specified at normal input(L:5Vdc, M:12Vdc, N:24Vdc), rated load, 25℃ 70% RH ambient.
- 2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1μf & 47μf capacitor.
- 3.Line regulation is measured from low line to high line at rated load.
- 4.Load regulation is measured from 10% to 100% rated load.
- 5.Patient leakage current(2μA max.) and reinforced isolation is based on a 250VAC, 50/60Hz system input voltage.
- 6.The final equipment must be re-confirm that it still meet EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.”(as available on http://www.meanwell.com)
Technical drawings
Typical applications
- Medical devices
- Medical oxygen monitor
- CT scanning
- Medical carts
- Oral care equipment
Downloads
Certificates5
Test reports1
FAQ
Can I use the MDS01L-03 for a low-power 3.3V embedded controller or sensor board?
Yes, this model is a DC-DC converter with a fixed, unregulated 3.3V output and 1W power rating. It is suited to low-power embedded electronics, compact sensor boards, and control circuits that specifically require 3.3V within that 1W limit.
Is the MDS01L-03 a good fit for industrial monitoring electronics that run on 3.3V?
It can fit industrial monitoring or signal-processing electronics that need a 3.3V output, stay within 1W, and tolerate an unregulated rail. The compact 19.5 × 9.8 × 12.5 mm size also makes it easier to use where board space is limited.
Can this converter be used in automation equipment with low-power 3.3V logic sections?
Yes, it is appropriate for low-power 3.3V logic sections in automation or control equipment when the load fits a 1W converter. Its output is fixed but unregulated (±5.0% accuracy, ±10% load regulation), so the logic must tolerate that variation.
Is the MDS01L-03 suitable for indoor or outdoor equipment?
The operating temperature range is -40°C to +85°C (with load derating at higher temperatures, see the derating curve), which supports use across a wide temperature span. However, no IP rating is listed in the provided specs, so exposed outdoor use or washdown environments should not be assumed from the spec sheet alone.
How does the MDS01L-03 compare with the other MDS01L 1W models?
All MDS01L siblings are 1W models, but the outputs differ: MDS01L-05 is 5V up to 200mA, MDS01L-12 is 12V up to 84mA, and MDS01L-15 is 15V up to 67mA. The MDS01L-03 itself is the 3.3V, 303mA version and the only 3.3V model in the series.
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