LED Driver xppower.com
LDU Series
Constant Current Output
LED Drive Current up to 1000 mA
LED Strings from 2 V to 57 V
PWM & Analog Dimming Control
High Efficiency up to 95%
Open or Short Circuit LED Protection
3 Year Warranty
Specification
Input General
Input Voltage LDU08 & 24: 7-30 VDC
Efficiency See tables
LDU48: 7-60 VDC
Switching Frequency LDU08: 40-380 kHz variable
Input Filter Capacitor
LDU24: 50-330 kHz variable
Input Surge LDU08 & 24: 40 VDC for 0.5 s
LDU48: 20-500 kHz variable
LDU48: 65 VDC for 0.5 s
MTBF LDU08: >1.6 MHrs
LDU24: >1.6 MHrs
Output LDU48: >950 KHrs
to MIL-HDBK-217F at 25 C, GB
Output Voltage See tables
(Vin must be at least 2 V greater than Vout)
Environmental
Output Current See tables
Output Current Trim 25-100%
Operating Temperature LDU08: -40 C to +85 C,
Output Current LDU08: 6.0% max LDU24: -40 C to +85 C,
Accuracy LDU24: 8.0% max
LDU24 1000 mA unit: -40 C to +70 C,
LDU48: 8.0% max
LDU48: See derating curves
Ripple & Noise LDU08: 200 mV pk-pk max
Case Temperature LDU08 & 24: +100 C max
LDU24: 250 mV pk-pk max
LDU48: +110 C max
(except 1000 mA units: 300mV pk-pk max)
Storage Temperature -40 C to +125 C
LDU48: See tables
Humidity Up to 95%, non-condensing
measured with 20 MHz bandwidth
Thermal Impedance 35-50 C/W model dependant
Short Circuit Protection Current is limited to the rated output
Ingress Protection IP67 (wired versions)
Temperature LDU08: 0.03%/C max
Coefficient LDU24: 0.08%/C max Rating
LDU48: 0.03%/C max
Remote On/Off On = 0.3-1.25 V or open circuit
Off = 0.15 V (applied to control pin)
EMC
LDU08 & 24: Quiescent input current is
Emissions EN55022 class B conducted & radiated
25 A max,
with external components - see
LDU48: Quiescent input current is
100 A max application notes
Remote On/Off Signal 1 mA max ESD Immunity EN61000-4-2, level 2 Perf Criteria A
Current
Radiated Immunity EN61000-4-3, level 2 Perf Criteria A
EFT/Burst EN61000-4-4, level 2 Perf Criteria A
Dimming
Surge EN61000-4-5, level 2 Perf Criteria A
PWM
Conducted Immunity EN61000-4-6, level 2 Perf Criteria A
Output Current Range 25% to 100%
Operating Frequency 1 kHz max
On Time 200 ns min
Off Time 200 ns min
Amplitude 1.25 V max
DC Voltage Control
Output Current Range 25% to 100%
Control Input 0.3 to 1.25 V max
Variable Resistor
Output Current Range 25% to 100%
DCDCDCDC
LDU08/24
Models and Ratings
With Dimming Control
Output Power Input Voltage Range Output Voltage Output Current Efficiency Model Number
8.0 W 7 - 30 V 2 - 28 V 300 mA 95% LDU0830S300
8.0 W 7 - 30 V 2 - 28 V 350 mA 95% LDU0830S350
14.0 W 7 - 30 V 2 - 28 V 500 mA 95% LDU2430S500
17.0 W 7 - 30 V 2 - 28 V 600 mA 95% LDU2430S600
20.0 W 7 - 30 V 2 - 28 V 700 mA 95% LDU2430S700
24.0 W 7 - 30 V 2 - 28 V 1000 mA 95% LDU2430S1000
Wired Versions (No Dimming Control)
Output Power Input Voltage Range Output Voltage Output Current Efficiency Model Number
8.0 W 7 - 30 V 2 - 28 V 350 mA 95% LDU0830S350-W
14.0 W 7 - 30 V 2 - 28 V 500 mA 95% LDU2430S500-W
20.0 W 7 - 30 V 2 - 28 V 700 mA 95% LDU2430S700-W
24.0 W 7 - 30 V 2 - 28 V 1000 mA 95% LDU2430S1000-W
Wired Version with Dimming Control
Output Power Input Voltage Range Output Voltage Output Current Efficiency Model Number
8.0 W 7 - 30 V 2 - 28 V 350 mA 95% LDU0830S350-WD
14.0 W 7 - 30 V 2 - 28 V 500 mA 95% LDU2430S500-WD
20.0 W 7 - 30 V 2 - 28 V 700 mA 95% LDU2430S700-WD
24.0 W 7 - 30 V 2 - 28 V 1000 mA 95% LDU2430S1000-WD
Mechanical Details
LDU08 Wired Versions
LDU08: 14 Pin DIL
0.60 0.92 (23.4)
(15.24)
0.55 (14.0) 0.55 (14.0)
0.10
1
0.40
(2.54) 8
2
(10.16)
0.40 0.40
0.55
Bottom View
(10.16) (10.16)
1 2 7 (14.0)
0.20
0.40 0.27 0.12
16 21 8 9
Bottom View
(5.08)
0.02 (10.16) (6.88) (3.05)
14 8 16 9
(0.50)
3.94 3.94
0.80
0.02 (100.0) (100.0)
(20.32)
0.20
(0.50)
(5.08)
0.39 Stripped
(10.0) & tinned
LDU24 Wired Versions
LDU24 16 Pin DIL
0.92 (23.4)
0.92 (23.4)
0.55 (14.0) 0.55 (14.0)
0.55
(14.00)
10.16 10.16
0.12 0.40 (0.40) (0.40)
0.55 0.55
(3.05) (10.16)
(14.0) (14.0)
16 21 89
DIA.
3.94 3.94
0.02
0.40 (100.0) (100.0)
(0.50)
(10.16) 1
0.11
8
0.70
2
(2.81)
(17.78)
0.39
0.08 Bottom View Stripped
(10.0)
(1.92) & tinned
12 3 78
16 9
0.02
0.40
(0.50)
Bottom View
(10.16)
0.02 (0.5)
16 15 10 9
0.08
(1.92)
0.50
(12.70)
0.02
0.10
LDU Connections
(2.54) (0.50)
LDU08 LDU08-W LDU08-WD LDU24 LDU24-W LDU24-WD Function
Notes
1 1 (Black) 1 (Black) 1 & 2 1 (Black) 1 (Black) -Vin: -DC supply
1. All dimensions are in inches (mm)
2 No Wire 2 (White) 3 No Wire 2 (White) Control
2. Weight: LDU08 - 0.006 lbs (2.6 g) approx.
7 8 (Blue) 8 (Blue) 7 & 8 8 (Blue) 8 (Blue) -Vout: LED cathode connection
LDU08 (wired version) - 0.02 lbs (11.1 g) approx.
8 9 (Yellow) 9 (Yellow) 9 &10 9 (Yellow) 9 (Yellow) +Vout: LED anode connection
LDU24 - 0.014 lbs (6.2 g) approx.
LDU24 (wired version) - 0.02 lbs (11.1 g) approx.
14 16 (Red) 16 (Red) 15 & 16 16 (Red) 16 (Red) +Vin: +DC supply
3. Pin diameter: 0.020.002 (0.50.05)
4. Pin pitch tolerance: 0.014 (0.35)
Note: LDU08: Do not connect Pin 1 (-Vin) to Pin 7 (-Vout).
5. Case tolerance: 0.02 (0.5) LDU24: Do not connect Pins 1 & 2 (-Vin) to Pins 7 & 8 (-Vout).