DC-DC Step-Up Constant Current LED driver
■
Features :
DC/DC step-up converter
LDH-45
series
Constant current output : 350mA to 1050mA
Wide output LED string voltage up to 126VDC
High efficiency up to 95%
Built
-
in EMI filter
,
comply with EN55015 without additional
input filter and capacitors
PWM + analog dimming and remote ON/OFF control
[(Blank) type or W type]
DALI dimming [(Blank)DA type or WDA type]
Protections: Short circuit / Over voltage / Under voltage
Cooling by free air convection
Fully encapsulated
3 years warranty
(for DA-Type only)
LDH-45
-350
=A or B; A: 9~18VDC input range, B: 18~32VDC input range
=(Blank) or W or (Blank)DA or WDA ;
(Blank): PIN style, PWM+analog dimming
W: Wire style, PWM+analog dimming
(Blank)DA: PIN style, DALI dimming
WDA: Wire style, DALI dimming
SPECIFICATION
MODEL
RATED CURRENT
LDH-45A-350
LDH-45A-500
LDH-45A-700
LDH-45A-1050
LDH-45B-350
LDH-45B-500
LDH-45B-700
LDH-45B-1050
350mA
500mA
700mA
12~64VDC
24~64VDC
75V
44.8W
1.9Vp-p
1050mA
12~43VDC
24~43VDC
50V
45.15W
1.9Vp-p
CURRENT ACCURACY(Typ.)
±5%
at 12VDC input
12~86VDC
12~86VDC
VOLTAGE RANGE
Non-DALI
Note.2
24~86VDC
24~86VDC
DALI
NO LOAD OUTPUT VOLTAGE(max.)
100V
OUTPUT
30.1W
RATED POWER
RIPPLE & NOISE (max.)
Note.3
2.5Vp-p
RATED VOLTAGE
INPUT
VOLTAGE RANGE
Note.2
EFFICIENCY (max.)
DC CURRENT (Typ.)
PWM
REMOTE ON/OFF
DIMMING
&
PWM DIMMING FREQUENCY
ON/OFF
CONTROL QUIESCENT INPUT CURRENT
IN SHUTDOWN MODE(Typ.)
REMOTE ON/OFF
DIM INPUT VOLTAGE RANGE
MAX OPERATION VOLTAGE
12VDC
9~18VDC
91%
2.8A
90%
4.1A
100V
43W
2.5Vp-p
350mA
500mA
±5%
at 24VDC input
21~126VDC
36~126VDC
146V
44.1W
2.5Vp-p
24VDC
18~32VDC
21~86VDC
36~86VDC
100V
43W
1.7Vp-p
700mA
21~64VDC
36~64VDC
75V
44.8W
1.2Vp-p
1050mA
21~43VDC
36~43VDC
50V
45.15W
1.2Vp-p
90%
4.2A
91%
4.2A
93%
2.1A
94%
2.1A
95%
2A
95%
2A
Leave open if not used
Power ON with dimming: PWM signal >2~8VDC or open circuit, between PWM DIM and DIM-
Power OFF : PWM signal <0.5VDC or short or PWM duty is equal to 0%, between PWM DIM and DIM-
1K~10KHz
7mA when PWM dimming OFF
Leave open if not used
Power on with dimming: DC input >0.25~8VDC or open circuit, between Analog DIM and DIM-
Power off : DC input <0.2VDC or short, between Analog DIM and DIM-
0.25~1.3VDC
8V; The output current remains constant when voltage changes from 1.3V to 8V
ANALOG
DIMMING
&
ON/OFF
CONTROL
QUIESCENT INPUT CURRENT
7mA when Analog dimming OFF
IN SHUTDOWN MODE(Typ.)
SHORT CIRCUIT
Protection type : Power OFF and fuse open
PROTECTION
OVER VOLTAGE (max.)
WORKING TEMP.
WORKING HUMIDITY
ENVIRONMENT STORAGE TEMP., HUMIDITY
TEMP. COEFFICIENT
VIBRATION
SAFETY &
EMC
SAFETY STANDARDS
EMC EMISSION
EMC IMMUNITY
MTBF
DIMENSION
PACKING
NOTE
75V
50V
146V
100V
50V
Protection type : Constant output voltage and shut off o/p current, recovers automatically after fault condition is removed
-40 ~ +70
℃
(Refer to "Derating Curve")
20 ~ 90% RH non-condensing
100V
100V
75V
-40 ~ +85
℃
, 10 ~ 95% RH
±
0.03%/
℃
(0 ~ 50
℃)
10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes
EAC TP TC 004
approved
Compliance to EN55015;EAC TP TC 020
Compliance to EN61547,EN61000-4-2,3,4,6,8; light industry level, criteria A;EAC TP TC 020
1179.3Khrs min.
MIL-HDBK-217F (25
℃
)
75*53*22.7mm (L*W*H)
138g;100pcs/14.8Kg/0.83CUFT[(Blank) type or (Blank) DA type],1.04CUFT(W type or WDA type)
OTHERS
1. All parameters are specified at normal input(12VDC,24VDC), rated load, 25
℃
70% RH ambient.
2. (Blank) type and W type output voltage must step up by 3 Volts from input DC voltage;
(Blank)DA type and WDA type output voltage must step up by 12 Volts from input DC voltage.
3. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf parallel capacitor.
File Name:LDH-45-SPEC 2018-01-10
DC-DC Step-Up Constant Current LED driver
Mechanical Specification
LDH (PIN Style):
53 [2.09]
19.75
6 6 6 8.1
3.5 [ 0.138 ]
LDH-45
Pin Configuration
series
Unit: mm [inch]
22.7 [0.89]
PIN No.
1
2
3
75 [2.95]
Output
Vin+
Vin-
DIM-
DA-
DC Supply
Description
7.4
1
2 3 4 5
Don't connect to Vout-
=(Blank) type:GND of DIM signal
Don't connect to Vout- or Vin-
=(Blank)DA type:DALI- signal
=(Blank) type:
ON/OFF and analog dimming
(leave open if not used)
=(Blank)DA type:DALI+ signal
BOTTOM
VIEW
SIDE
VIEW
4
Analog
DIM
DA+
7
32.8
6
7.4
12.75
5
6
7
ON/OFF and PWM dimming
PWM DIM (leave open if not used)
[(Blank)DA type: no such PIN]
Vout-
Vout+
LED - connection
LED + connection
NOTE:PIN size tolerance 1.0
ψ±
0.05mm
LDH (Wire Style):
PIN No.
1
53 [2.09]
22.7 [0.89]
Output
Vin+(red)
DIM-
(black)
DA-(white)
Analog
DIM
(white)
DA+(blue)
DC Supply
Description
2
3
Vin-(black) Don't connect to Vout-
=W type:GND of DIM signal
Don't connect to Vout- or Vin-
=WDA type:DALI- signal
=W type:
ON/OFF and analog dimming
(leave open if not used)
=WDA type:DALI+ signal
8mm
100
±
10mm
1
2 3 4 5
5
75 [2.95]
BOTTOM
VIEW
8mm
100
±
10mm
SIDE
VIEW
4
7
6
5
6
6
7
ON/OFF and PWM dimming
PWM DIM (leave open if not used)
(blue)
[WDA type:no such PIN]
Vout-(black) LED - connection
Vout+(red) LED + connection
Derating Curve
B type
100
75
A type
50
25
Static Characteristics
B type
100
LOAD (%)
LOAD (%)
75
A type
50
25
-40
0
25
50
60
70
100
9
18
12
20
14
24
16
28
18 (A type)
32 (B type)
Ta (
℃
)
INPUT VOLTAGE (V)
File Name:LDH-45-SPEC 2018-01-10
DC-DC Step-Up Constant Current LED driver
LDH-45
series
Standard Application
※
Operation without dimming:
Io
operates at rated current without dimming function when the pins of analog DIM and PWM DIM keep open
Vin+
DC Input
Vin-
DIM-
Analog DIM
PWM DIM
Vout-
1st LED
Last LED
LDH-45
Vout+
※
PWM Dimming Control (non DA type):
Io
adjustment by PWM Signal
Vin+
DC Input
Vin-
DIM-
H
L
H:2~8VDC
L:0~0.5VDC
During PWM dimming operation,
Io
will change with the PWM duty
(PWM Signal: 1K~10KHz)
1st LED
Last LED
I out(%
)
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
0%
tolerance:
±
10%
1
KHZ
LDH-45
Vout+
Analog DIM
PWM DIM
Vout-
10
KHZ
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
PWM duty
12VDC&24VDC input, full load
Note: DALI dimming curve refer to 10KHz curve
※
Analog Dimming Control (non DA type):
Io
adjustment by DC voltage
Vin+
DC Input
Vin-
DIM-
0.25V~1.3V
During analog dimming operation,
Io
will change with DC input voltage
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
0. 2
0
.
25
0. 3
0. 4
0. 5
0. 6
0. 7
0. 8
tolerance:
±
10%
1st LED
Last LED
LDH-45
Vout+
Analog DIM
PWM DIM
Vout-
I out(%
)
0. 9
1
1. 1
1. 2
1. 3
※
DALI Dimming Control (DA type only):
Io
adjustment by DALI signal
Analog voltage (V)
12VDC input&24VDC input, full load
Vin+
DC Input
Vin-
DA-
DALI signal
DA+
Vout-
1st LED
Last LED
LDH-45
Vout+
DALI protocol including 16 groups and 64 addresses.
Min. dimming level is about 8% of output.
File Name:LDH-45-SPEC 2018-01-10
DC-DC Step-Up Constant Current LED driver
LDH-45
LDH-45B-350 24VDC input Vf
=
3
.
09V
series
Efficiency VS Output Voltage(Number of LEDs)
LDH-45A-350 12VDC input Vf
=
3
.
15V
95%
96%
EFFICIENCY (%)
94%
93%
92%
91%
90%
7
11
15
19
23
27
EFFICIENCY (%)
95%
94%
93%
92%
9
13
17
21
25
29
33
37
41
Number of LEDs
Number of LEDs
LDH-45A-500 12VDC input Vf
=
3
.
33V
LDH-45B-500 24VDC input Vf
=
3
.
25V
97%
EFFICIENCY (%)
94%
93%
92%
91%
90%
6
10
14
18
22
26
EFFICIENCY (%)
95%
96%
95%
94%
93%
11
14
17
20
23
26
Number of LEDs
LDH-45A-700 12VDC input Vf
=
3
.
43V
Number of LEDs
LDH-45B-700 24VDC input Vf
=
3
.
43V
97%
EFFICIENCY (%)
EFFICIENCY (%)
5
7
10
13
16
19
95%
94%
93%
92%
91%
90%
96%
95%
94%
93%
7
10
13
16
19
Number of LEDs
LDH-45A-1050 12VDC input Vf
=
3
.
15V
Number of LEDs
LDH-45B-1050 24VDC input Vf
=
3
.
15V
EFFICIENCY (%)
94%
93%
92%
91%
90%
6
8
10
12
14
EFFICIENCY (%)
95%
97%
96%
95%
94%
93%
9
10
11
12
13
14
Number of LEDs
Number of LEDs
Application Notes:
1.The positive and negative input terminals must be connected correctly and negative voltage can not be input
to avoid damage to the power supply.
2.Due to the large input current, please pay attention to the voltage drop of the wiring, to ensure the power
supply to work properly.
3.When using the LEDS of different forward voltage, please pay attention to the min Load of DA-type to ensure that
LED lights went out after DALI dimming off.
File Name:LDH-45-SPEC 2018-01-10
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