LD24E-07-300 datasheet(2/2 Pages) MPD

No de pièce	LD24E-07-300

Description	Low Cost, PWM Control Constant Current Output DC/DC LED Drivers

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Fabricant	MPD [MicroPower Direct, LLC]

Site Internet	http://www.micropowerdirect.com

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2 / 2 page

Speciﬁcation Notes:

1. Exceeding 40V on the unit input could damage the unit.

2. No connection should be made between input ground and the

output.

3. These are step-down devices, the maximum output open voltage

is equal to the input voltage.

4. The PWM/Cont input (Pin 3) should be left open if not used.

5. Exceeding the speciﬁed maximum output power could cause damage

to the unit.

PWM Output Current Control

Output current may be

adjusted by using a

pulse width modulated

(PWM) signal. By vary-

ing the signal duty cycle

(as shown at right)

the output current is

adjusted up or down.

Output current may be calculated by the formula:

Where Iout = Required output current

Irated = Full rated output current for the unit

Dpwm = Duty cycle of the control signal

OUT

RATED

PWM

I

= I

x D

Mechanical Dimensions

www.micropowerdirect.com

MicroPower Direct

We Power Your Success - For Less!

292 Page Street Ste D Stoughton, MA 02072

•

TEL: (781) 344-8226

•

FAX: (781) 344-8481

•

E-Mail: sales@micropowerdirect.com

Notes:

• All dimensions are typical in inches (mm)

• Tolerance x.xx = ±0.01 (±0.25)

• Pin 1 is marked by a “dot” or indentation on the top of the unit

Pin Connections

Function

1+VIN

+DC Supply

3

PWM

PWM, On/Off

4

Gnd

-DC Supply

5-VOUT LED Cathode Conn.

6

+Vout

LED Anode Conn.

Connection Notes:

1. In some noise sensitive applications, the addition of the

input ﬁlter components (C1, L1 & C2) will help to reduce

conducted emissions.

2. Input gnd (Pin 4) cannot be connected to the output.

3. If not being used, the PWM/Control input (Pin 3) should

be left open.

Typical Connection: Parallel Output

Typical Connection:

Model

Number

Input

Output

Dimming

Control

Efﬁciency

(%, Max)

Voltage (VDC)

Voltage

(VDC)

Current

(mA)

Nominal

Range

LD24E-07-300

24

5.5 - 36.0

2.0 - 32.0

0.0 - 300

PWM

95

LD24E-08-350

24

5.5 - 36.0

2.0 - 32.0

0.0 - 350

PWM

95

LD24E-12-500

24

5.5 - 36.0

2.0 - 32.0

0.0 - 500

PWM

95

LD24E-14-600

24

5.5 - 36.0

2.0 - 32.0

0.0 - 600

PWM

95

LD24E-17-700

24

5.5 - 36.0

2.0 - 32.0

0.0 - 700

PWM

95

Model Selection Guide

Connection Notes:

1. A positive temperature coefﬁcient PTC is connected to

each parallel channel for protection.

Numéro de pièce similaire - LD24E-07-300

Fabricant	No de pièce	Fiches technique	Description
MicroPower Direct, LLC	LD24E-07-300	288Kb / 2P	Low Cost, PWM Control Constant Current Output DC/DC LED Drivers

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