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Mean Well

Mean Well LDB-500L DC/DC LED Driver CC 500mA - Buck-boost

contant currentbuck-boosthigh efficiency up to 91%pin style
SKU LDB-500L
$12.73 USD
Shipping calculated at checkout.
Available to order
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Overview

LDB-500L is the model of this series: typical efficiency 87%. 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

Specifications

LDB-500LSpecifications from the official datasheet (2024-08-02 edition)

OUTPUT

CURRENT RANGE
500mA
VOLTAGE RANGENote.4
2 ~ 32VDC
CURRENT ACCURACY (Typ.)
±5%
RIPPLE & NOISE(max.)Note.2
150mVp-p
SWITCHING FREQENCY
1000KHz
NO LOAD OUTPUT VOLTAGE
75VDC

INPUT

VOLTAGE RANGENote.4
9 ~ 30VDC
EFFICIENCY (max.) 12VDC
87%
EFFICIENCY (max.) 24VDC
89%
DC CURRENT Full load 12VDC
1590mA
DC CURRENT Full load 24VDC
790mA
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)

MODEL ENCODING

Blank (this model)
Blank : pin style
W
W : wire style
Test conditions and notes4
  1. 1.All parameters are specified at normal input(24VDC), rated load, 25℃ 70% RH ambient.
  2. 2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1uf capacitor.
  3. 3.The output of LDB-L should not be connected to the input of the same unit or output from other sources.
  4. 4. If input voltage is 36V then the output voltage operating range had better <38V.

Technical drawings

LDB-500L Mechanical Specification
Mechanical Specification
LDB-500L Derating Curve
Derating Curve
LDB-500L Safe Operating Area
Safe Operating Area
LDB-500L PWM Dimming Control
PWM Dimming Control
LDB-500L Efficiency VS Output Voltage(Number
Efficiency VS Output Voltage(Number
LDB-500L Packing
Packing
LDB-500L Standard Tube Packing
Standard Tube Packing

Downloads

FAQ

Can the LDB-500L be used for a 500mA LED downlight?

Yes, this driver is intended for constant current LED loads and provides 500mA output. It is a fit for 500mA downlight modules as long as the load stays within the 2-32V CC range and the input-dependent limits of the safe operating area.

Is this a good choice for LED sign lighting modules?

It can work for signage modules or small LED arrays that are specified for 500mA constant current operation. Because it is not a constant voltage model, it should not be matched to LED products that expect a fixed voltage supply.

Can I use the LDB-500L for a compact LED array in a low-voltage system?

Yes, that is a common fit when the LED array is designed for 500mA constant current and falls within the 2-32V output range. The buck-boost design and 9-30VDC input make it suitable where input voltage can vary within that range.

What should I check to confirm LED compatibility with the LDB-500L?

The key checks are output current and constant current voltage range. This driver delivers 500mA with a 2-32V CC range, and the number of LEDs it can run depends on the forward voltage of each LED, not on a single fixed quantity.

Can the LDB-500L be used in harsh environments?

It is fully encapsulated with an IP67 rating, so it is suited to locations where dust and water resistance are required. Its operating temperature range is -40°C to +70°C (refer to the derating curve), which also supports demanding environmental conditions.

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Mean Well LDB-500L DC/DC LED Driver CC 500mA - Buck-boost
Mean Well

Mean Well LDB-500L DC/DC LED Driver CC 500mA - Buck-boost

$12.73 USD

LDB-500L is the model of this series: typical efficiency 87%. 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
View product

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