14-Mar-12

LDU05/07/14

Mechanical Details

Application Notes

12.70

(0.50)

10.16

(0.40)

(

7.62

(0.30)

Bottom View

2.54

(0.10)

0.50

(0.02)

7.62

(0.30)

0.50

(0.02)

6.85

(0.27)

3.05

0.12)

Pin Size is 0.5 mm (0.02”) DIA

14

85

7

Pin Connections

1

+V Input

+DC supply

4

+V Output

LED anode connection

5

-V Output

LED cathode connection

7

V Adj

Dimming Control

8

-V Input

-DC supply

Models and Ratings

Output Power Input Voltage Range

Output Voltage

Output Ripple & Noise Output Current Output Current

Accuracy

Efficiency

Model Number

4.2 W

7-16 V

2-14 V

120 mV

300 mA

±5%

93%

LDU0516S300

4.9 W

7-16 V

2-14 V

150 mV

350 mA

±6%

93%

LDU0516S350

7.0 W

7-16 V

2-14 V

200 mV

500 mA

±7%

93%

LDU0716S500

8.4 W

7-16 V

2-14 V

200 mV

600 mA

±7%

93%

LDU1416S600

9.8 W

7-16 V

2-14 V

250 mV

700 mA

±7%

93%

LDU1416S700

14.0 W

7-16 V

2-14 V

250 mV

1000 mA

±8%

93%

LDU1416S1000

With Dimming Control

1. All dimensions are in inches (mm)

2. Weight: 0.003 lbs (1.8 g) approx.

3. Pin diameter: 0.02±0.002 (0.5±0.05)

4. Pin pitch tolerance: ±0.014 (±0.35)

5. Case tolerance: ±0.02 (±0.5)

Notes

+

-

+

-

+Vout

- Vout

C2

C1

L1

LDU

Input Filter to meet Class B Conducted Emissions

C1

10 µF

C2

4.7 µF

L1

68 µH

Output Current Adjustment by Variable Resistor

By connecting a variable resistor between Control and GND, simple dimming can

be achieved. Capacitor C is optional for HF noise rejection, recommended value is

0.22 µF.

Shorting out the Control pin to GND will turn the output off.

The output current can be determined using the equation:

Where the value of R is between 0 and 2 M

Ω,themaximumadjustmentrangeof

output current is 25% to 90% (For Vin-Vout <20 VDC)

Iout =

Rated Max I x R

(R + 200 k)

+Vout

- Vout

-Vin

R

C

Output Current Adjustment by DC Voltage

LDU

Control

+Vout

-Vout

+

-Vin

The output current is given by:

Control Voltage Range: 0.3 V to 1.25 VDC

Iout nom = Rated Max I x Control Voltage

1.25

LDU

+Vout

- Vout

-Vin

GND

PWM

0V

5.0V

Control

Output Current Adjustment by PWM

The output current can be determined using the equation : Iout = Rated Max I x Dpwm

Dpwm = PWM duty cycle

A Control Voltage lower than 0.15 V will turn the output off