DC-DC Constant Current LED driver
LDD-L series
Features :
Constant current output: 300mA to 700mA
Wide input voltage: 9 ~ 36VDC
Wide output LED string voltage: 2 ~ 32VDC
High efficiency up to 95%
DC/DC step-down converter
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
Compact size
Low cost, high reliability
Suitable for driving illumination LED
3 years warranty
SPECIFICATION
ORDER NO.
LDD-300L
LDD-350L
LDD-500L
LDD-600L
LDD-700L
CURRENT RANGE
300mA
350mA
500mA
600mA
700mA
VOLTAGE RANGE
2 ~ 32VDC
5% at 24VDC input
150mVp-p
CURRENT ACCURACY (Typ.)
RIPPLE & NOISE(max.) Note.2
SWITCHING FREQENCY
EXTERNAL CAPACITANCE LOAD (max.)
OUTPUT
150mVp-p
150mVp-p
200mVp-p
200mVp-p
40KHz ~ 1000KHz
2.2uF
9 ~ 36VDC
VOLTAGE RANGE
EFFICIENCY (max.)
95% at full load and 24VDC/36VDC input
350mA
INPUT
500mA
600mA
700mA
Full load Note.3 300mA
DC CURRENT
FILTER
No load
10mA
Capacitor
Leave open if not use
PWM
Power ON with dimming: DIM ~ -Vin >3.5 ~ 8VDC or open circuit
Power OFF : DIM ~ -Vin < 0.5VDC or short
100 ~ 1KHz
REMOTE ON/OFF
DIMMING
&
PWM FREQUENCY
ON/OFF
CONTROL
QUIESCENT INPUT CURRENT
IN SHUTDOWN MODE(max.)
1mA at PWM dimming OFF and 24VDC input
Regulated at rated output current
SHORT CIRCUIT
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)
PROTECTION
ENVIRONMENT
OVER TEMPERATURE
WORKING TEMP.
20% ~ 90% RH non-condensing
WORKING HUMIDITY
STORAGE TEMP., HUMIDITY
TEMP. COEFFICIENT
VIBRATION
-55 ~ +125 , 10 ~ 95% RH
0.03% /
10 ~ 500Hz, 2G 10min./1 cycle, period for 60min. each along X, Y, Z axes
100
OPERATING CASE TEMP. (max.)
EMI CONDUCTION & RADIATION
EMS IMMUNITY
Compliance to EN55015, FCC part 15 class B
Compliance to EN61000-4-2,3,4,6,8, light industry level, criteria A
EMC
2000Khrs min. MIL-HDBK-217F (25
)
MTBF
DIMENSION
22.6*9.9*8.9mm or 0.89"*0.39"*0.33" inch (L*W*H)
OTHERS
4g
WEIGHT
Expoxy(UL94-V0)
POTTING MATERIAL
Pin Configuration
Derating Curve
Mechanical Specification
Unit: mm (inch)
3.81 ( 0.15 )
9.9 ( 0.39 )
Pin No. Output
Comment
1
+Vin
DC Supply
1
3 4
ON/OFF and PWM
Dimming
(Leave open if
not used)
100
75
2.54 ( 0.10 )
85 for
300~500mA
3
PWM DIM
71 for 600~700mA
SIDE
VIEW
BOTTOM
VIEW
Don't connect
to -Vout
50
25
4
-Vin
5
6
-Vout
LED - Connection
+Vout LED + Connection
6
5
-40
0
25
50
71 85 100
8.9 (0.33)
7.62(0.30)
Ta (
)
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.
NOTE
File Name:LDD-L-SPEC 2011-06-02