Tridonic 28003376 LC 35W 200-350mA flexCC lp SNC3 – Easy Selectable Output Current VIA Dipswitch

28003376 Common Data

Rated supply voltage 220 – 240 V
AC voltage range 198 – 264 V
Mains frequency 50 / 60 Hz
Overvoltage protection 320 V AC, 1 h
Leakage current (at 230 V, 50 Hz, full load) < 0.45 mA
Max. input current (at 230 V, 50 Hz, full load) 170 mA

Output power range 10.4 – 36.5 W
Typ. efficiency (at 230 V, 50 Hz, full load) (1) 92 %
λ (at 230 V, 50 Hz, full load) (1) 0.95
THD (at 230 V, 50 Hz, full load) (1) < 20 %
Starting time (at 230 V, 50 Hz, full load) ≤ 0.5 s
Turn off time (at 230 V, 50 Hz, full load) ≤ 0.5 s
Hold on time at power failure (output) 20 s
Output current tolerance (2) ± 7.5 %
Max. peak output current at full load (1) 489 mA
Output LF current ripple (< 120 Hz) ± 30 %

Max. output voltage (U-OUT) 320 V
Mains surge capability (between L – N) 1 kV
Mains surge capability (between L/N – PE) 2 kV
Mains burst capability 1 kV
Surge voltage at output side (against PE) 3 kV
Ambient temperature ta (at lifetime 50,000 h) 60 °C
Storage temperature ts -40 – 80 °C
Type of protection IP20
Length 230 mm
Width 30 mm
Height 21 mm
Hole spacing D 218 mm
Lifetime up to 50000 h

Also stocked within the essence series

28003375
28003377
28003378

Other information for the 28003376

28003376 Standards

EN 55015
EN 61000-3-2
EN 61000-3-3
EN 61347-1
EN 61347-2-13
EN 61547
EN 62384

The LED driver is designed for a life-time stated above under reference conditions and with a failure probability of less than 10 %.

The relation of tc to ta temperature depends also on the luminaire design.

If the measured tc temperature is approx. 5 K below tc max., ta temperature should be checked and eventually critical components (e.g. ELCAP) measured. Detailed information on request.

28003376 Wiring

28003376 Wiring type and cross section

For wiring use stranded wire with ferrules or solid wire from 0.5 – 1.5 mm². Strip 8.5 – 9.5 mm of insulation from the cables to ensure perfect operation of the push-wire terminals.

28003376 Wiring guidelines

• All connections must be kept as short as possible to ensure good EMI behaviour.
• Mains leads should be kept apart from LED driver and other leads (ideally 5 – 10 cm distance)
• Max. length of output wires is 2 m.
• Incorrect wiring can damage LED modules.
• To avoid damage of the Driver, the wiring must be protected against short circuits to earth (sharp edged metal parts, metal cable clips, louver, etc.).

28003376 Earth connection

The earth connection is conducted as protection earth (PE). The LED driver can be earthed via metal housing. Ground the LED driver with protective
earth (PE).

• Electromagnetic interferences (EMI)
• Transmission of mains transients to the LED output

In general it is recommended to earth the LED driver if the LED module is mounted on earthed luminaire parts respectively heat sinks and thereby representing a high capacity against earth.

For Class II application, protection earth is no need to be connected, below 2 scenarios should be considered:
• If the LED driver housing is screw on a metal part inside the luminaires, both LED driver and LED module must be insulated.
• If the LED driver housing is screw on a plastic part inside the luminaires, the LED module need to be insulated.

Replace LED module

1. Mains off
2. Remove LED module
3. Wait for 30 seconds
4. Connect LED module again
Hot plug-in or output switching of LEDs is not permitted and may cause a very high current to the LEDs.

Mounting of device

Max. torque for fixing: 0.5 Nm/M4

28003376 Functions

Short-circuit behaviour

In case of a short circuit on the output side (LED) the LED driver switches into hic-cup mode. After elimination of the short-circuit fault the LED driver will recover automatically.

No-load operation

The LED driver works in burst working mode to provide a constant output voltage regulation which allows the application to be able to work safely when LED string opens due to a failure.

Overload protection

If the maximum load is exceeded by a defined internal limit, the LED driver will protect itself and LED may flicker. After elimination of the overload, the nominal operation is restored automatically.

Miscellaneous

Insulation and electric strength testing of luminaires

Electronic devices can be damaged by high voltage. This has to be considered during the routine testing of the luminaires in production.

According to IEC 60598-1 Annex Q (informative only!) or ENEC 303-Annex A, each luminaire should be submitted to an insulation test with 500V DC for 1 second. This test voltage should be connected between the interconnected phase and neutral terminals and the earth terminal.

The insulation resistance must be at least 2MΩ.

As an alternative, IEC 60598-1 Annex Q describes a test of the electrical strength with 1500V AC (or 1.414 x 1500V DC). To avoid damage to the electronic devices this test must not be conducted.

Conditions of use and storage

Humidity: 5 % up to max. 85 %, not condensed (max. 56 days/year at 85 %)

Storage temperature: -40 °C up to max. +80 °C

The devices have to be within the specified temperature range (ta) before they can be operated.

The LED driver is declared as inbuilt LED controlgear, meaning it is intended to be used within a luminaire enclosure.

If the product is used outside a luminaire, the installation must provide suitable protection for people and environment (e.g. in illuminated ceilings).

Maximum number of switching cycles

All LED driver are tested with 50,000 switching cycles.

Linear constant current LED drivers maintain a precise, steady amperage to LEDs by adjusting output voltage, ensuring consistent brightness and preventing thermal runaway. Unlike switching types, they use linear regulators for simplicity, low EMI, and no inductors, though they are less efficient. Ideal for high-power, series-wired lighting.

Key Characteristics of Linear Constant Current Drivers

Operating Principle: They use a linear regulator (often a resistor-based approach) to drop excess voltage and maintain a fixed current flow.

Voltage Adjustment: They automatically vary the output voltage within a specific range to keep the current (mA/A) constant regardless of LED load changes.

Series Connection: These drivers require LEDs to be wired in series to ensure the same current passes through each one.

No Inductors: Unlike switching drivers, linear drivers typically do not require inductors, making them smaller and less complex.

Advantages

Low Cost & Simplicity: Generally simpler design with fewer components.

Low EMI/Noise: Without high-frequency switching, they offer superior electromagnetic interference (EMI) performance.

Consistent Brightness: Guarantees uniform light output.

LED Protection: Prevents overdriving, which extends LED lifespan and reduces heat-related failures.

Limitations

Lower Efficiency: Because they regulate by dropping voltage (turning excess energy into heat), they are generally less efficient than switching drivers.

Heat Generation: The driver itself may get hot due to power dissipation.

Common Applications

• High-power lighting applications.
• Backlights and general illumination where high-frequency switching noise must be avoided.
• LED arrays requiring precise, stable current to maintain color qualit

Tridonic are a Zumtobel Group company, founded in 1956 in Dornbirn, Austria. For more than 60 years, they have been a driving force in the development of professional lighting solutions.

Today, Tridonic is a world-leading provider of lighting technology for professional applications, including office buildings, and retail outlets, hotels and restaurants, the education industry and outdoor lighting sectors.

In Tridonics’ extensive range of energy-efficient dimmable and non-dimmable LED drivers they offer the right products for every indoor and outdoor application – from cost-efficient LED drivers in proven Tridonic quality to premium products that give you maximum flexibility and convenience.

Tridonics’ dimmable LED drivers can be controlled with different analog and digital dimming signals. Tridonic basicDIM Wireless products allow wireless control without additional wiring.