Document
DC DC
LED Driver LDU56 Series
xppower.com
• Constant Current Output • LED Drive Current up to 1000 mA • LED Strings from 2 V to 56 V • PWM Dimming Control • High Efficiency up to 97% • Open or Short Circuit LED Protection • 3 Year Warranty
Specification
Input
Input Voltage Input Filter Input Surge
• 9-60 VDC • Capacitor • 65 VDC for 500 ms
Output
Output Voltage
• 2-56 V (Vin must be at least 4 V greater than Vout)
Output Current
• See tables
Output Current Accuracy
• See tables
Ripple & Noise
• See tables, measured with 20 MHz bandwidth
Short Circuit Protection • Current is limited to the rated output
Capacitive Load
• 2.2 µF max
Temperature Coefficient
• ±0.03%/°C max
Remote On/Off
• On = 2.5-5.0 V or open circuit Off = ≤0.8 V (applied to control pin) Quiescent input current is 3 mA max,
Remote On/Off Signal • 1 mA max Current
Dimming
PWM Output Current Range Operating Frequency On Time Off Time Amplitude
• 1% to 100% • 1 kHz max • 50 µs min • 50 µs min • 2.5 V, 5 V max
General
Efficiency Switching Frequency MTBF
• See tables • 40-1000 kHz variable • >2.0 MHrs to MIL-HDBK-217F at 25 °C,
GB
Environmental
Operating Temperature • -40 °C to +85 °C for 300/350 mA versions, -40 °C to +70 °C for others
Storage Temperature • -40 °C to +125 °C
Humidity
• Up to 95%, non-condensing
Thermal Impedance • 16.7 °C/W model dependant
EMC
Emissions
ESD Immunity Radiated Immunity EFT/Burst Conducted Immunity Magnetic Field
• EN55015 class B conducted & radiated with external components - see application notes
• EN61000-4-2, level 2 Perf Criteria A • EN61000-4-3, level 2 Perf Criteria A • EN61000-4-4, level 2 Perf Criteria A • EN61000-4-6, level 2 Perf Criteria A • EN61000-4-8, level 2 Perf Criteria A
DC DC
Models and Ratings
With Dimming Control
LDU56
Output Power
16.8 W 19.6 W 28.0 W 33.6 W 39.2 W 50.0 W
Input Voltage Range
9-60 V 9-60 V 9-60 V 9-60 V 9-60 V 9-60 V
Output Voltage
2-56 V 2-56 V 2-56 V 2-56 V 2-56 V 2-56 V
Output Ripple & Noise
250 mV 300 mV 350 mV 400 mV 400 mV 450 mV
Output Current
Output Current Accuracy
300 mA
±6%
350 mA
±5%
500 mA
±5%
600 mA
±5%
700 mA
±5%
1000 mA
±5%
Efficiency
97% 97% 97% 97% 97% 97%
Model Number(1)
LDU5660S300 LDU5660S350 LDU5660S500 LDU5660S600 LDU5660S700 LDU5660S1000
1. Add suffix ‘-W’ for wired version, e.g. LDU5660S500-W, or ‘-WD’ for wired version with dimming function e.g. LDU5660S500-WD.
Mechanical Details
LDU56 24 Pin DIL
LDU56 Wired versions
1.25 (31.75) 0.90 (22.86)
0.60 (15.24)
2 34
9 11
Bottom View
23 22
16 14
0.80 (20.32)
0.12 (3.05)
0.10 (2.54)
0.80 (20.32)
0.60 (15.24)
0.49 (12.45)
DIA. 0.02 (0.50)
LDU56 2&3
4 9 & 11 14 & 16 22 & 23
LDU56 Connections
LDU56-W LDU56-WD
Function
1 (Black) 1 (Black) -Vin: -DC supply
No Wire 5 (White) Control
12 (Blue) 12 (Blue) -Vout: LED cathode connection
13 (Yellow) 13 (Yellow) +Vout: LED anode connection
24 (Red) 24 (Red) +Vin: +DC supply
Note: Do not connect pins 2 & 3 (-Vin) to pins 9 & 11 (-Vout)
Notes 1. All dimensions are in inches (mm) 2. Weight: LDU56 - 0.04 lbs (17.7 g) approx.
LDU56 (wired version) - 0.05 lbs (22.0 g) approx. 3. Pin diameter: 0.02±0.002 (0.5±0.05)
Application Notes
1.25 (31.75)
1 5
Bottom View
24
12
0.80 (20.32)
13
24
3.94 (100.0)
0.39 (10.0)
0.49 (12.45)
51
12
3.94 (100.0)
Stripped & tinned
4. Pin pitch & length tolerance: ±0.014 (±0.35) 5. Case tolerance: ±0.02 (±0.5)
0.49 (12.45)
13
Output Current Adjustment by PWM
A Pulse Width Modulated (PWM) signal with duty cycle DPWM can be applied to the control pin. The output current can be determined using the equation : Iout = Rated Max I x Dpwm Dpwm = PWM duty cycle
PWM 5.0V
0V
GND
Input Filter to meet Class B Conducted Emissions
Control LDU
-Vin
+Vout - Vout
C3 C1 C2
L1
+Vin +Vout LDU56
-Vin -Vout
+LED GND
LDU5660Sxxx
C1 C2 2220,475K,100V,X7R 2220,475K,100V,X7R
L 68 µH
C3 100 µF/100 V
C3 C1 C2
L1 L2
+Vin +Vout LDU56-WD
-Vin -Vout
+LED GND
C1 C2 LDU5660Sxxx-WD 2220,475K,100V,X7R 2220,475K,100V,X7R
L1, L2 47 µH
C3 100 µF/100 V
29-Oct-13
.