Over 15 years experience of providing support of MEAN WELL Power Supplies
Image shown is a representation only. Exact specifications should be obtained from the product datasheet.
Mean Well LDB-350L DC/DC LED Driver CC 350mA - Buck-boost
Overview
LDB-350L is the model of this series: typical efficiency 89%. Type Blank: Blank : pin 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 (this model) | Blank : pin style |
| W | 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-350L for higher-current LED downlights?
Yes, this model is intended for constant current LED loads at 350mA, which can suit downlight modules that need more current than a 300mA driver. It supports a 2-40V CC output range from a 9-36VDC input.
Is the LDB-350L suitable for small outdoor LED arrays?
It can be used for small outdoor LED arrays when the array is designed for 350mA constant current operation and fits within the 2-40V range. The IP67 waterproof rating and -40°C to +70°C operating range (refer to the derating curve) support exposed environments.
Can the LDB-350L be used for rugged signage module applications?
Yes, it is an IP67 waterproof constant current driver, so it fits signage module applications where moisture resistance matters and the LED load matches the driver output. Its buck-boost design also supports the listed 9-36VDC input range.
Would the LDB-350L work in compact LED products where space is limited?
Yes, this is a compact driver at 31.8 × 20.3 × 12.2 mm and 15.6 g, which helps in small LED product housings. It is still a constant current driver, so the LED load must be matched electrically rather than treated like a constant voltage device.
How do I know whether my LEDs will work with the LDB-350L?
The driver outputs constant current at 350mA, so compatibility depends on whether the LEDs are meant for constant current operation. Its CC output voltage range is 2-40V, and the number of LEDs depends on the forward voltage of each LED.
How does the LDB-350L compare with other LDB series drivers?
In the LDB-L series, LDB-300L and LDB-300LW are 300mA, 2-40V; LDB-350LW matches this model at 350mA, 2-40V; LDB-500L and LDB-500LW are 500mA, 2-32V; and LDB-600L and LDB-600LW are 600mA, 2-30V. The LDB-350L is the pin style 350mA version.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
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-350LW DC/DC LED Driver CC 350mA - Buck-boost | 14W | 40V | 350 Milliampere | IP67 | $12.04 | View |
| Mean Well LDB-300LW DC/DC LED Driver CC 300mA - Buck-boost | 12W | 40V | 300 Milliampere | IP67 | $8.55 | View |
Please log in to write a review.
Write a review
Reviews are checked before publishing. By submitting you confirm this is your genuine experience with this product.
Submitting your review…
It's published and now helps other buyers.
We're checking it and it'll appear shortly.
Please try again.
