Datasheet

LDD-350H LDD-1200HBlank : pin style Blank : pin style
W : wire style W : wire style
S : SMD style
W
W
File Name:LDD-H-SPEC 2018-05-11
DC/DC step-down converter
Constant current output: 300mA to 1500mA
Wide input voltage: 9 ~ 56VDC
Wide output LED string voltage: 2 ~ 52VDC
High efficiency up to 97%
Built-in EMI filter, comply with EN55015 and FCC part15 without
additional input filter and capacitors
Built-in PWM 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
Non-potted, optional conformal coating for SMD style
(Order No.: LDD- 350-1000 HSC)
Compact size
Low cost, high reliability
Suitable for driving illumination LED
3 years warranty
SPECIFICATION
LDD-300H LDD-350H LDD-500H LDD-600H LDD-700H LDD-1000H LDD-1200H LDD-1500H
ORDER NO.
CURRENT RANGE
VOLTAGE RANGE
Note.4
CURRENT ACCURACY (Typ.)
OUTPUT
EFFICIENCY (max.)
DC CURRENT
INPUT
PWM
DIMMING
&
ON/OFF
CONTROL
ENVIRONMENT
EMC
WORKING TEMP.
WORKING HUMIDITY
STORAGE TEMP., HUMIDITY
TEMP. COEFFICIENT
VIBRATION
OPERATING CASE TEMP. (max.)
MTBF
DIMENSION
OTHERS
WEIGHT
POTTING MATERIAL
SHORT CIRCUIT
FILTER
REMOTE ON/OFF
PWM FREQUENCY
QUIESCENT INPUT CURRENT
IN SHUTDOWN MODE(max.)
OVER TEMPERATURE
PROTECTION
RIPPLE & NOISE(max.) Note.2
SWITCHING FREQENCY
EXTERNAL CAPACITANCE LOAD (max.)
97% at full load and 36VDC/48VDC input for LDD-H/HW ; 96% at full load and 36VDC/48VDC input for LDD-HS
270mA
5mA
9 ~ 56VDC
2.2uF
40KHz ~ 1000KHz
150mVp-p
±± ±3% at 24VDC input ; 4% at 48VDC input for LDD-H/HW ; 5% for LDD-HS
2 ~ 52VDC
300mA 350mA
150mVp-p
320mA
500mA
150mVp-p
450mA
600mA
200mVp-p
550mA
700mA 1000mA 1200mA 1500mA
200mVp-p 350mVp-p 350mVp-p
2 ~ 46VDC
350mVp-p
650mA 900mA 1100mA
9 ~ 52VDC
1360mA
1000Khrs min. MIL-HDBK-217F (25 )℃
-40 ~ + 85 (Refer to derating curve)℃
20% ~ 90% RH non-condensing for LDD-H/HW ; 20%~85% RH non-condensing for LDD-HS
-55 ~ +125 , 10 ~ 95% RH℃
±℃0.03% /
10 ~ 500Hz, 2G 10min./1 cycle, period for 60min. each along X, Y, Z axes
100℃
31.8*20.3*12.2mm or 1.25"*0.8"*0.48" inch (L*W*H) for LDD-H/HW ; 31.8*20.3*11.4mm or 1.25"*0.8"*0.45" inch (L*W*H) for LDD-HS
LDD-H:15.6g ; LDD-HW:18g ; LDD-HS:12.8g
Expoxy(UL94-V0) for LDD-H/HW ; without potted for LDD-HS
Full load Note.3
No load
Capacitor
Leave open if not use
Power ON with dimming: DIM ~ -Vin >2.5 ~ 6VDC or open circuit
Power OFF : DIM ~ -Vin < 0.8VDC or short
100 ~ 1KHz
1mA at PWM dimming OFF and 24VDC input
DC-DC Constant Current Step-Down LED driver
LDD-H series
■ Features :
VOLTAGE RANGE
Tj 150 typically(IC1) detect on main control IC℃
Regulated at rated output current
Protection type: Can be continued, recovers automatically after fault condition is removed
Protection type : Shut down, recovers automatically after temperature goes down
Compliance to EN55015, FCC part 15 class B, EAC TP TC 020
Compliance to EN61000-4-2,3,4,6,8, light industry level, criteria A, EAC TP TC 020
1.All parameters are specified at normal input(48VDC), 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: 48VDC input.
4.Output voltage will always step down by 3 volts from input DC voltage.
5.The output of LDD-H should not be connected to the input of the same unit or output from other sources.
NOTE
EMC IMMUNITY
EMC EMISSION
EAC TP TC 004 approved
SAFETY STANDARDS