RCD-48 Series
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).
| Part Number | Vin (V) | Main Vout (V) | Package Style | Current (A) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |
|
RCD-48-0.35
| 9.0 - 60.0 | 2 to 56 | DIP | 0.35 |
|
)
|
|||||
| 2 |
|
RCD-48-0.35/W
| 9.0 - 60.0 | 2 to 56 | Standard | 0.35 |
|
)
|
|||||
| 3 |
|
RCD-48-0.50
| 9.0 - 60.0 | 2 to 56 | DIP | 0.5 |
|
)
|
|||||
| 4 |
|
RCD-48-0.50/W
| 9.0 - 60.0 | 2 to 56 | Standard | 0.5 |
|
)
|
|||||
| 5 |
|
RCD-48-0.70
| 9.0 - 60.0 | 2 to 56 | DIP | 0.7 |
|
)
|
|||||
| 6 |
|
RCD-48-0.70/W
| 9.0 - 60.0 | 2 to 56 | Standard | 0.7 |
|
)
|
|||||
| 7 |
|
RCD-48-1.00
| 9.0 - 60.0 | 2 to 56 | DIP | 1.0 |
|
)
|
|||||
| 8 |
|
RCD-48-1.00/W
| 9.0 - 60.0 | 2 to 56 | Standard | 1.0 |
|
)
|
|||||
| 9 |
|
RCD-48-1.20/M
| 9.0 - 60.0 | 2 to 56 | DIP | 1.2 |
|
)
|
| Attributes | RCD-48 |
|---|---|
| AC/DC or DC/DC | DC/DC |
| Vin (V) | 9.0 - 60.0 |
| Main Vout (V) | 2 to 56 |
| Output Voltage Range (V) | 2.0 - 56.0 |
| Nr. of Outputs | Single |
| Length (mm) | 32.6 |
| Certifications | EN 60950-1, IEC 60950-1, UL 60950-1 |
| MIN Operating Temp (°C) | -40.0 |
| Protections | SCP |
| Directives | RoHS 2 (6/6) |
| Operating Modes | CC, Dimming |
| Regulation | Regulated |
| Part Number | Power (W) | Vout 1 (V) | Vin (V) | Mounting Type | |||||
|---|---|---|---|---|---|---|---|---|---|
| 1 |
|
RCD-48-0.35
| 19.6 | 9.0 - 60.0 | THT |
|
|
||
| 2 |
|
RCD-48-0.35/W
| 19.6 | 9.0 - 60.0 | Wired |
|
|
||
| 3 |
|
RCD-48-0.50
| 28.0 | 9.0 - 60.0 | THT |
|
|
||
| 4 |
|
RCD-48-0.50/W
| 28.0 | 9.0 - 60.0 | Wired |
|
|
||
| 5 |
|
RCD-48-0.70
| 39.2 | 9.0 - 60.0 | THT |
|
|
||
| 6 |
|
RCD-48-0.70/W
| 39.2 | 9.0 - 60.0 | Wired |
|
|
||
| 7 |
|
RCD-48-1.00
| 56.0 | 9.0 - 60.0 | THT |
|
|
||
| 8 |
|
RCD-48-1.00/W
| 56.0 | 9.0 - 60.0 | Wired |
|
|
||
| 9 |
|
RCD-48-1.20/M
| 67.2 | 9.0 - 60.0 | THT |
|
|
Documents & Media
| Title | Type | Date |
|---|---|---|
| recom-certificate-rohs-2.1.pdf | ||
| RCD-48.pdf | Datasheet |
The PWM-control pin can be used as remote control pin as well. It means you can switch the unit on/off via this pin. Switching level is TTL compatible and has hysteresis to allow slow switching waveforms.
The analog voltage is used to control an internal PWM circuit.
The RCD-24 series is step-down (buck) converter. You always need a higher input voltage than the output voltage required. A high power LED usually has a forward voltage drop of around 3.4V, so only three LEDs can be drivenin series from a 12V source. If the input voltage is increased to 24V, seven LEDs can be in the chain and if the input voltage is 36V, then ten LEDs can be driven.
However, it is possible to connect chains of LEDs in parallel, so a RCD-24-7.0 can drive two chains of three 350mA LEDs connected in parallel.
Remember that this part is a constant current converter, so the output voltage is variable depending on the power needed, but it will always be lower than the input voltage.
However, it is possible to connect chains of LEDs in parallel, so a RCD-24-7.0 can drive two chains of three 350mA LEDs connected in parallel.
Remember that this part is a constant current converter, so the output voltage is variable depending on the power needed, but it will always be lower than the input voltage.
The RCD series is a All-in-One solution in a small package with high efficiency, wide input range, two different ways of dimming Analog and Digital (PWM), high operating temperature range, and it’s fully tested. You don’t have to worry about all different suppliers of all the components of your discrete solution.
The linearity outside the 10~90% range of the PWM dimming is not perfect, but still pretty good. The Analog dimming can be used in a 0~100% range.