1200

300

1000

Ambient Temperature Range (°C)

-40

0

20

40

50

80 100

350

500

700

80

50

75

Natural Convection

60

60

RCD-48

LIGHTLINE

DC/DC-Converter

with 5 year Warranty

Constant

Current

Buck LED

Driver

Selection Guide

Operating Input Voltage Range

9-60VDC

Absolute Maximum Input Voltage

65VDC max.

Output LED String Voltage Range

2V min. / 56V max.

(depand on the input voltage, defined by the output impedance, see Safe Operating Area)

Input Filter

Capacitor

Output Current Accuracy

±3% typ. / ±5% max.

Internal Power Dissipation

350mA

0.8W typ.

(Vin=60V, Vout=56V)

500mA

1.0W typ.

700mA

1.1W typ.

1000mA

1.3W typ.

1200mA

1.4W typ.

Output Current Stability

Vin=60V, Vout=2-56V, Iout=350-1200mA

±1% max.

Output Ripple and Noise (20MHz BW)

Vin=60V, Vout=2-56V, Iout=350-1200mA

300mVp-p max.

Maximum Capacitive Load

100μF max.

Switching Frequency

50kHz min. / 1000kHz max.

Efficiency at Full Load

96% typ.

PWM DIMMING CONTROL & REMOTE ON/OFF CONTROL

Input Voltage Range

5V typ. / 10V max.

Threshold Voltage

Device ON

0.5V max.

Device OFF

2.0V min.

PWM Frequency

For Linear Operation

200Hz max.

Frequency Limit

1000Hz max.

Input Voltage Range

0V min. / 10V max.

Control Voltage Range

0V min. / 5.1V max.

Note: The analogue dimming range is from 0% to 100%, but the output can be unstable below 10%, when using the analo-

gue dimming function.

Analogue Pin Drive Current

Vc=5V

0.2mA max.

Vref Version

Vref Voltage

4.95V

Vref Output Current

0.5mA

Vref Output Short Circuit Current

2mA typ.

Ambient Temperature

350mA

-40°C to +80°C

(free air convection)

500mA

-40°C to +80°C

700mA

-40°C to +75°C

1000mA

-40°C to +60°C

1200mA

-40°C to +50°C

Analogue and PWM Dimming Control Note: Leave open if not used - do not tie to +Vin

continued on next page

Description

The RCD-48 series is a step-down constant current source designed for driving high power LED applications.

Four output currents are available. The maximum output voltage is 56V. The buck drivers have digital PWM

and/or analogue voltage dimming control and are special featured with very high efficiency. Typical applications

are 48V bus lighting solutions or high voltage LED arrays (e.g. high bay lights).

Features

LED DRIVER

Part

Input

Output

Output

Dimming

Efficiency

Number

Range

Current

Voltage

Control

Typ.

(VDC)

(mA)

(VDC)

(%)

RCD-48-0.35*

9-60

0-350

2-56

Digital + Analogue

96

RCD-48-0.50*

9-60

0-500

2-56

Digital + Analogue

96

RCD-48-0.70*

9-60

0-700

2-56

Digital + Analogue

96

RCD-48-1.00*

9-60

0-1000

2-56

Digital + Analogue

96

RCD-48-1.20/M

9-60

0-1200

2-56

Digital + Analogue

96

*add suffix “/W“ for wired version with Vref output and analogue + PWM dimming control (seven wires)

Note:

Add suffix “/M“ for metal case (RCD-48-1.20/M only). No metal case with wires available.

Standard version (no suffix) and wired version (suffix /W) only in plastic case.

EN-50121-3-2 Certified

EN-60950-1 Certified

UL-60950-1 Certified

E224736

RoHS

2011/65/EU

6/6

Refer to Application Notes

Derating-Graph

(Ambient Temperature)

L-12

www.recom-power.com

REV: 0/2015