LDD-L
DC-DC Constant Current Step-Down LED driver
series
■ Features :
DC/DC step-down converter
Constant current output: 300mA to 700mA
Wide input voltage: 9 ~ 36VDC
Wide output LED string voltage: 2 ~ 32VDC
High efficiency up to 95%
Built-in EMI filter, comply with EN55015 and FCC part15 without
additional input filter and capacitors
Built-in PWM dimming and remote ON/OFF control
Protections: Short circuit / Over temperature
Cooling by free air convection
Fully encapsulated with IP67 level for pin and wire style
Compact size
Low cost, high reliability
Suitable for driving illumination LED
3 years warranty
LDD-350L W
Blank : pin style
W
: wire style
S
: SMD style
SPECIFICATION
ORDER NO.
CURRENT RANGE
VOLTAGE RANGE
OUTPUT
LDD-300L
LDD-350L
LDD-500L
LDD-600L
LDD-700L
300mA
350mA
500mA
600mA
700mA
200mVp-p
200mVp-p
Note.4 2 ~ 32VDC for LDD-300~700L/LW ; 2~ 28VDC for LDD-300~700LS
CURRENT ACCURACY (Typ.) ±5% at 24VDC input
RIPPLE & NOISE(max.) Note.2 150mVp-p
150mVp-p
150mVp-p
40KHz ~ 1000KHz
SWITCHING FREQENCY
EXTERNAL CAPACITANCE LOAD (max.) 2.2uF
VOLTAGE RANGE
INPUT
9 ~ 36VDC for LDD-300~700L/LW ; 9~ 32VDC for LDD-300~700LS
95% at full load and 24VDC/36VDC input for LDD-300~700L/LW ; 95% at full load and 24VDC input for LDD-300~700LS
EFFICIENCY (max.)
350mA
500mA
600mA
700mA
Full load Note.3 300mA
DC CURRENT
5mA
No load
FILTER
Capacitor
Leave open if not use
PWM
REMOTE ON/OFF
DIMMING
&
PWM FREQUENCY
ON/OFF
CONTROL QUIESCENT INPUT CURRENT
IN SHUTDOWN MODE(max.)
SHORT CIRCUIT
PROTECTION
OVER TEMPERATURE
WORKING TEMP.
WORKING HUMIDITY
STORAGE TEMP., HUMIDITY
ENVIRONMENT
TEMP. COEFFICIENT
Power ON with dimming: DIM ~ -Vin >3.5 ~ 8VDC or open circuit
Power OFF : DIM ~ -Vin < 0.5VDC or short
100 ~ 1KHz
1mA at PWM dimming OFF and 24VDC input
Regulated at rated output current
Protection type: Can be continued, recovers automatically after fault condition is removed
Tj 150℃ typically(IC1) detect on main control IC
Protection type : Shut down, recovers automatically after temperature goes down
-40 ~ + 85℃(Refer to derating curve)
20% ~ 90% RH non-condensing for LDD-300~700L/LW ; 20% ~ 85% RH non-condensing for LDD-300~700LS
-55 ~ +125℃, 10 ~ 95% RH
±0.03% / ℃
10 ~ 500Hz, 2G 10min./1 cycle, period for 60min. each along X, Y, Z axes
VIBRATION
OPERATING CASE TEMP. (max.) 100℃
EMC
OTHERS
NOTE
EMC EMISSION
EMC IMMUNITY
Compliance to EN55015, FCC part 15 class B
MTBF
DIMENSION
2000Khrs min. MIL-HDBK-217F (25℃)
22.6*9.9*8.9mm or 0.89"*0.39"*0.35" inch (L*W*H) for LDD-300~700L/LW ; 25.4*10.5*9.3mm or 1"*0.4135"*0.366" inch (L*W*H) for LDD-300~700LS
WEIGHT
LDD-300~700L:4g ; LDD-300~700LW:7.3g ; LDD-300~700LS :3.4g
POTTING MATERIAL
Expoxy(UL94-V0) for LDD-300~700L/LW ; without potted for LDD-300~700LS
Compliance to EN61000-4-2,3,4,6,8, light industry level, criteria A
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.Test condition: 24VDC input.
4.Output voltage will always step down by 3 volts from input DC voltage.
5.The output of LDD-L should not be connected to the input of the same unit or output from other sources.
File Name:LDD-L-SPEC 2015-08-24
DC-DC Constant Current Step-Down LED driver
LDD-L
series
■ Features :
DC/DC step-down converter
Constant current output: 1000mA to 1500mA
Wide input voltage: 6 ~ 36VDC
Wide output LED string voltage: 2 ~ 30VDC
High efficiency up to 95%
Built-in EMI filter, comply with EN55015 and FCC part15 without
additional input filter and capacitors
Built-in PWM +analog dimming and remote ON/OFF control
Protections: Short circuit
Cooling by free air convection
Fully encapsulated with IP67 level for pin and wire style
Non-potted, optional conformal coating for SMD style
(Order No.: LDD- 1000 LSC)
Compact size
Low cost, high reliability
Suitable for driving illumination LED
3 years warranty
LDD-1000L W
Blank : pin style
W
: wire style
S
: SMD style
SPECIFICATION
ORDER NO.
CURRENT RANGE
VOLTAGE RANGE
OUTPUT
LDD-1000L
LDD-1200L
LDD-1500L
1000mA
1200mA
1500mA
1.5Vp-p
1.5Vp-p
Note.4 2 ~ 30VDC
CURRENT ACCURACY (Typ.) ±5% at 24VDC input
RIPPLE & NOISE(max.) Note.2 1.5Vp-p
1000KHz
SWITCHING FREQENCY
EXTERNAL CAPACITANCE LOAD (max.) 2.2uF
VOLTAGE RANGE
INPUT
6 ~ 36VDC
95% at full load and 24VDC/36VDC input for LDD-1000~1500L/LW
EFFICIENCY (max.)
1160mA
Full load Note.3 990mA
DC CURRENT
5mA
No load
FILTER
1450mA
Capacitor
Leave open if not use
PWM
REMOTE ON/OFF
DIMMING
&
PWM FREQUENCY
ON/OFF
CONTROL QUIESCENT INPUT CURRENT
IN SHUTDOWN MODE(max.)
Power ON with dimming: DIM ~ -Vin >2.6 ~ 5.5VDC or open circuit
ANALOG
DIMMING
REMOTE ON / OFF
&
ON/OFF
CONTROL
Leave open if not use
PROTECTION SHORT CIRCUIT
WORKING TEMP.
WORKING HUMIDITY
STORAGE TEMP., HUMIDITY
ENVIRONMENT
TEMP. COEFFICIENT
Power OFF : DIM ~ -Vin < 0.4VDC or short
100 ~ 500Hz
1mA at PWM dimming OFF and 24VDC input
Power ON with dimming : DIM ~ -Vin>0.5~2.5VDC or open circuit
Power OFF : DIM ~ -Vin<0.4VDC or short
Regulated at rated output current
Protection type: Can be continued, recovers automatically after fault condition is removed
-40 ~ + 71℃(Refer to derating curve)
20% ~ 90% RH non-condensing for LDD-1000~1500L/LW ; 20%~85% RH non-condensing for LDD-1000~1500LS
-55 ~ +125℃, 10 ~ 95% RH
±0.03% / ℃
10 ~ 500Hz, 2G 10min./1 cycle, period for 60min. each along X, Y, Z axes
VIBRATION
OPERATING CASE TEMP. (max.) 100℃
EMC
OTHERS
NOTE
EMC EMISSION
EMC IMMUNITY
Compliance to EN55015, FCC part 15 class B
MTBF
DIMENSION
2000Khrs min. MIL-HDBK-217F (25℃)
31.8*20.3*12.2mm or 1.25"*0.8"*0.48" inch (L*W*H) for LDD-1000~1500L/LW ; 31.8*20.3*10.9mm or 1.25"*0.8"*0.43" inch (L*W*H) for LDD-1000~1500LS
WEIGHT
LDD-1000~1500L:15.6g ; LDD-1000~1500LW:18g ; LDD-1000~1500LS:12.8g
POTTING MATERIAL
Expoxy(UL94-V0) for LDD-1000~1500L/LW ; without potted for LDD-1000~1500LS
Compliance to EN61000-4-2,3,4,6,8, light industry level, criteria A
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.Test condition: 36VDC input.
4.Output voltage will always step down by 3 volts from input DC voltage.
5.The output of LDD-L should not be connected to the input of the same unit or output from other sources.
File Name:LDD-L-SPEC 2015-08-24
LDD-L
DC-DC Constant Current Step-Down LED driver
Pin Configuration
Mechanical Specification
Blank type(LDD- 300~700L):
1
Unit: mm (inch)
Pin No.
3.81 [ 0.15 ]
9.9 [0.39]
6
22.6 [0.89]
17.78 [0.7]
2.54 [0.10]
SIDE
VIEW
Comment
1
+Vin
DC Supply
3
PWM DIM
ON/OFF and PWM Dimming
(Leave open if not used)
4
-Vin
Don't connect to -Vout
5
-Vout
LED - Connection
6
+Vout
LED + Connection
3 4
BOTTOM
VIEW
series
5
8.9 [0.35]
ψ0.60
7.62 [0.30]
NOTE: Pin tolerance ±0.05mm
W type(LDD - 300~700LW):
8.9 [0.35]
9.9 [0.39]
1
3
Pin No.
1
4
4
SIDE
VIEW
4
5
5±2mm 100±10mm
5
6
22.6 [ 0.89]
3
BOTTOM
VIEW
5
Comment
+Vin
DC Supply
(Red)
PWM DIM ON/OFF and PWM Dimming
(Leave open if not used)
(White)
-Vin
Don't connect to -Vout
(Black)
-Vout
LED - Connection
(Blue)
+Vout
LED + Connection
(Yellow)
6
NOTE: All wires UL3385 22AWG
S type(LDD - 300~700LS):
17.78 [0.70]
Pin No.
0.6 [0.023] 2.54 [0.10]
1
7 8
0.65 [0.02]
BOTTOM VIEW
16
14
+Vin
DC Supply
7,8
+Vout
LED + Connection
9,10
-Vout
LED - Connection
A
10 9
14
0.25 [0.01]
SIDE VIEW
A
9.3 [0.36]
Comment
1
ON/OFF and PWM Dimming
PWM DIM
(Leave open if not used)
16
-Vin
Don't connect to -Vout
others
N.C
LED - Connection
10.50 [0.41]
25.4 [1.00]
12.8 [0.50]
2.54mm
Recommended PCB layout (for LDD-300~700LS)
2.54mm
13.1[0.52]
14.63[0.58]
16
14
10
9
7
8
TOP VIEW
1
1.54[0.06]
2.54[0.1]
1.54[0.06]
File Name:LDD-L-SPEC 2015-08-24
LDD-L
DC-DC Constant Current Step-Down LED driver
series
Pin Configuration
Mechanical Specification
Blank type(LDD- 1000~1500L):
Unit: mm (inch)
1
2
Pin No.
1,2
21
BOTTOM
SIDE
VI EW
VI EW
3.81 [0.15]
31.8 [1.25]
24
23
2.06 [0.08]
20.3 [0.80]
Comment
Don't connect to -Vout
11,12
-Vout
LED - Connection
13,14
+Vout
LED + Connection
21
PWM +analog ON/OFF and PWM / analog Dimming
(Leave open if not used)
DIM
+Vin
DC Supply
2.54 [0.1]
23,24
14
13
-Vin
11
12
15.24 [0.60]
12.2 [0.48]
ψ0.60
NOTE: Pin tolerance ±0.05mm
W type(LDD - 1000~1500LW):
12.2
[0.48]
5±2mm 100±10mm
20.3 [0.80]
Pin No.
2
2
23
21
SIDE
BOTTOM
VIEW
14
VI EW
11
31.8 [1.25]
21
2
Don't connect to -Vout
11
-Vout
(Blue)
LED - Connection
14
+Vout
(Yellow)
LED + Connection
21
11
23
NOTE: All wires UL3385 22AWG
Comment
-Vin
(Black)
PWM +analog ON/OFF and PWM / analog Dimming
(Leave open if not used)
DIM (White)
+Vin
(Red)
DC Supply
S type(LDD - 1000~1500LS):
0.25[0.010]
1.5[0.059]
2.0 [0.08]
25.4 [1.00]
20.3 [0.80]
24
23
Pin No.
1
2
21
1.0 [0.04]
-Vin
Don't connect to -Vout
11,12
-Vout
LED - Connection
+Vout
LED + Connection
31.8 [1.25]
13,14
BOTTOM
VIEW
14
13
2.54 [0.10]
0.5 [0.02]
Comment
1,2
21
PWM +analog ON/OFF and PWM / analog Dimming
(Leave open if not used)
DIM
23,24
+Vin
DC Supply
others
N.C
No connection
11
12
10.9 [0.43]
11.4 [0.45]
2.54mm
Recommended PCB layout (for LDD-1000~1500LS)
2.54mm
24.37[0.96]
26.40[1.04]
24 23
21
14 13
TOP VIEW
1 2
11 12
2.03[0.08]
2.54[0.1]
1.5[0.06]
File Name:LDD-L-SPEC 2015-08-24
LDD-L
DC-DC Constant Current Step-Down LED driver
Reflow Soldering Curve (for LDD-300~1500LS)
Derating Curve
Peak. Temp 240℃
10 sec. Max.
240
220℃
220
60 sec. Max.
(>220℃)
LOAD (%)
Temperature (℃)
series
150
100
100
85℃ for
300~500mA
75
71℃ for 600~1500mA
50
50
25
0
Time(sec.)
Remark : The curve applies only to the " Hot Air Reflow Soldering"
-40
0
25
71
50
85
100
Ta (℃)
PWM Dimming Control (for 300~1500mA)
Io Adjustment by PWM signal :
+Vin
+Vout
H: > 3.5~8VDC or open circuit
1st LED
Dimming
PWM
300 ~ 700mA :
L: < 0.5VDC or short
LDD-300~1500L
H
L
Last LED
1000 ~ 1500mA :
H: > 2.6~5.5VDC or open circuit
-Vin
-Vout
{
Output
Current
{
ON
◎ During PWM dimming operation, the output current will change to
PWM style.
ON
100
L(0V)
OFF
OFF
Tol : ±3%(Typ.)
OFF
100~1KHz
75
PWM Frequency :
300~700mA : 100~ 1KHz
1000~ 1500mA : 100~500Hz
Max
I out(% )
PWM
Signal
ON
H(5V)
L: < 0.4VDC or short
50
25
0
0
25
50
75
100
Duty Cycle (%)
Analog Dimming Control for 1000~ 1500mA only
Io Adjustment by DC voltage :
+Vin
+Vout
1st LED
Dimming
0.5~2.5VDC
LDD-1000~1500L
Last LED
-Vin
-Vout
24Vdc input
120%
100%
80%
Iout
1500 mA
60%
1200 mA
1000 mA
40%
20%
0%
3.0
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
Voltage control(0.5~2.5VDC)
File Name:LDD-L-SPEC 2015-08-24
LDD-L
DC-DC Constant Current Step-Down LED driver
series
Efficiency VS Output Voltage(Number of LEDs)
Fig-1
12VDC input, 1~3 LEDs(Vf=3V)
Fig-2
90%
85%
80%
95%
EFFICIENCY (%)
300mA
350mA
500mA
600mA
700mA
1000mA
1200mA
1500mA
95%
EFFICIENCY (%)
300mA
350mA
500mA
600mA
700mA
1000mA
1200mA
1500mA
100%
100%
90%
85%
80%
75%
75%
70%
70%
1
2
1
3
Output Voltage(LEDs)
Fig-3
2
3
4
5
6
7
Output Voltage(LEDs)
36VDC input, 1~10 LEDs(Vf=3V)
300 mA
350 mA
500 mA
600 mA
700 mA
1000 mA
1200 mA
1500 mA
100%
95%
90%
EFFICIENCY (%)
24VDC input, 1~7 LEDs(Vf=3V)
85%
80%
75%
70%
65%
1
2
3
4
5
6
7
8
9
10
Output Voltage(LEDs)
File Name:LDD-L-SPEC 2015-08-24