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Mean Well LDB-350LW DC/DC LED Driver CC 350mA - Buck-boost
Overview
LDB-350LW is the model of this series: typical efficiency 89%. Type W: W : wire style.
Features
- DC/DC buck-boost converter
- Constant current output: 300mA to 600mA
- Wide input voltage: 9 ~ 36VDC
- Wide output LED string voltage: 2 ~ 40VDC
- High efficiency up to 91%
- Comply with BS EN/EN55015 and FCC part15
- Built-in PWM and remote ON/OFF control
- Protections: Short circuit / Over temperature
- Cooling by free air convection
- Fully encapsulated with IP67 level
- Compact size
- High reliability
- Suitable for driving illumination LED
- 3 years warranty
Model encoding
| Type | Function |
|---|---|
| Blank | Blank : pin style |
| W (this model) | W : wire style |
Specifications
OUTPUT
- CURRENT RANGE
- 350mA
- VOLTAGE RANGENote.4
- 2 ~ 40VDC
- CURRENT ACCURACY (Typ.)
- ±5%
- RIPPLE & NOISE(max.)Note.2
- 150mVp-p
- SWITCHING FREQENCY
- 1000KHz
- NO LOAD OUTPUT VOLTAGE
- 75VDC
INPUT
- VOLTAGE RANGENote.4
- 9 ~ 36VDC
- EFFICIENCY (max.) 12VDC
- 89%
- EFFICIENCY (max.) 24VDC
- 91%
- DC CURRENT Full load 12VDC
- 1100mA
- DC CURRENT Full load 24VDC
- 520mA
- DC CURRENT No load
- 2mA (Vin 24VDC)
- FILTER
- Capacitor
PWM DIMMING & ON/OFF CONTROL
- REMOTE ON/OFF
- Leave open if not use Power ON with dimming: DIM ~ -Vin >2 ~ 10VDC or open circuit Power OFF : DIM ~ -Vin < 0.5VDC or short
- PWM FREQUENCY
- 100 ~ 1KHz
- MAX. PWM SIGNAL CURRENT
- 1mA
PROTECTION
- SHORT CIRCUIT
- Regulated at rated output current Protection type: Can be continued, recovers automatically after fault condition is removed
- OVER TEMPERATURE
- Tj 145℃ typically(IC1) detect on main control IC Protection type : Shut down, recovers automatically after temperature goes down
ENVIRONMENT
- WORKING TEMP.
- -40 ~ + 70℃(Refer to derating curve)
- WORKING HUMIDITY
- 20% ~ 90% RH non-condensing
- STORAGE TEMP., HUMIDITY
- -55 ~ +125℃, 10 ~ 95% RH
- TEMP. COEFFICIENT
- ±0.03% / ℃
- VIBRATION
- 10 ~ 500Hz, 2G 10min./1 cycle, period for 60min. each along X, Y, Z axes
- OPERATING CASE TEMP. (max.)
- 115℃
EMC
- SAFETY STANDARDS
- EAC TP TC 020/2011 approved
- EMC EMISSION
- Compliance to BS EN/EN55015, FCC part 15 class B, EAC TP TC 020
- EMC IMMUNITY
- Compliance to BS EN/EN61000-4-2,3,4,6,8, light industry level, criteria A, EAC TP TC 020
OTHERS
- MTBF
- 350Khrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- 31.8*20.3*12.2mm or 1.25"*0.8"*0.48" inch (L*W*H)
- WEIGHT
- LDB-L:15.6g(15pcs/Tube) ; LDB-LW:18g(20pcs/Box), Please order Base on MPQ
- POTTING MATERIAL
- Expoxy(UL94-V0)
Test conditions and notes4
- 1.All parameters are specified at normal input(24VDC), rated load, 25℃ 70% RH ambient.
- 2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1uf capacitor.
- 3.The output of LDB-L should not be connected to the input of the same unit or output from other sources.
- 4. If input voltage is 36V then the output voltage operating range had better <38V.
Technical drawings
Downloads
FAQ
Can I use the LDB-350LW for a 350mA LED downlight module?
Yes, this model is a constant current LED driver with a 350mA output, so it fits LED downlights designed for 350mA drive current. The LED load also needs to stay within the 2-40V constant current range.
Is the LDB-350LW suitable for LED signage modules?
It can be used for signage modules or small LED arrays when the load is designed for constant current operation at 350mA. It is not a constant voltage driver, so it should be matched to LED modules that specify 350mA and stay within the 2-40V CC range.
Can this driver run a small custom LED array?
Yes, if the array is a constant current load rated for 350mA and its total forward voltage falls within 2-40V. The usable output voltage depends on input (up to 27V at 9V input, 36V at 12V), so check the safe operating area.
How do I know if the LDB-350LW is compatible with my LEDs?
Match the LEDs by current first: this driver outputs 350mA constant current, not constant voltage. The LED string must operate within the 2-40V CC output range, and the number of LEDs depends on the forward voltage of each LED rather than a fixed LED count.
Is the LDB-350LW appropriate for wet or outdoor conditions?
The unit is rated IP67 Waterproof, so it is built for environments where water and dust resistance matter. It is also specified for operation from -40°C to +70°C (refer to the derating curve), which supports demanding outdoor or industrial conditions.
Payment & Security
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Other LDB Series Models
7 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well LDB-300L DC/DC LED Driver CC 300mA - Buck-boost | 12W | 40V | 300 Milliampere | IP67 | $8.76 | View |
| Mean Well LDB-600LW DC/DC LED Driver CC 600mA - Buck-boost | 18W | 30V | 600 Milliampere | IP67 | $9.41 | View |
| Mean Well LDB-600L DC/DC LED Driver CC 600mA - Buck-boost | 18W | 30V | 600 Milliampere | IP67 | $11.46 | View |
| Mean Well LDB-500LW DC/DC LED Driver CC 500mA - Buck-boost | 16W | 32V | 500 Milliampere | IP67 | $11.35 | View |
| Mean Well LDB-500L DC/DC LED Driver CC 500mA - Buck-boost | 16W | 32V | 500 Milliampere | IP67 | $11.46 | View |
| Mean Well LDB-350L DC/DC LED Driver CC 350mA - Buck-boost | 14W | 40V | 350 Milliampere | IP67 | $11.46 | View |
| Mean Well LDB-300LW DC/DC LED Driver CC 300mA - Buck-boost | 12W | 40V | 300 Milliampere | IP67 | $8.55 | View |
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