OPTOTRONIC Intelligent Ultraflat

Now you can have high quality, reliable and versatile lighting wherever you need it. A super slim (11 mm height) profile and flicker-free light make this LED driver ideal for modern, creative and innovative designs. Fast and easy to program in floor-standing, pendant and surface-mounted luminaires and panels, when used as a system solution with other elements from the Ultraflat range it lets you bring your most creative lighting designs to fruition — quickly, easily and without fuss. What is more, you can now create precisely the lighting solution your project needs without having to find a compromise between design and efficiency. The intelligent features of this driver, which include fit for SMART GRID, fit for emergency, corridor and Touch DIM capabilities, make it versatile and easy to manage, while its compatibility with several programming interfaces (DALI lighting, LEDset2, NFC) ensure flexibility. In short, the OPTOTRONIC Intelligent UltraFlat Dimmable DALI may be half the height of a standard OTi DALI, but its optimized performance and functionality, and ease of integration with other elements from the Ultraflat range, means that it can provide just about any feature that modern lighting manufacturers, designers and planners can think of.

OPTOTRONIC Intelligent Ultraflat

Product benefits
  • Ultra-flat housing (11 mm height) for innovative luminaire designs and applications
  • LEDset interface for direct Ultraflat sensor connection (LS/PD LT2 LI UF sensor)
  • Fully programmable via software (DALI Interface, NFC)
  • Lifetime: up to 100,000 h (temperature at Tc = 65 °C, max. 10 % failure rate)
  • High-quality dimming of 1…100 % by amplitude dimming
  • High quality of light thanks to <1% output ripple current
  • Very high efficiency and reliability
  • Safety requirement due to overload, overtemperature, Hot Plug protection
Versatile scope of application due to OSRAM DALI Technology:
  • Easy to use in corridors and restrooms because of three-level Corridor function
  • Touch DIM application: easy to control via pushbutton or sensor
  • Energy efficient Touch DIM operation due to automatic switch-off at sufficient residual light
  • Suitable for emergency Installations (acc. to EN 60598-2-22 and IEC 61347-2-13, appendix J) thanks to DC detection (0 Hz, pulsating DC), on/off switchable
  • Feedback of power consumption and operating hours (Fit for SMART GRID)
  • Suitable for buildings according to EPBD/BREEAM/LEED due to automatic Constant Lumen Output setting
  • Luminaire information for easy maintenance
Areas of application
  • Linear lighting for office, education, industry, storage areas and retail
  • Installation in emergency lighting systems according to IEC 61347-2-13, appendix J
  • Suitable for luminaires of protection class I
Product features
  • Line frequency: 0 Hz | 50 Hz | 60 Hz
  • Versatile DALI window driver up to 75 W due to flexible output characteristic
  • Supply voltage: 220…240 V
  • Available with output current range: up to 700 mA
  • Direct Ultraflat sensor connection via LEDset (LS/PD LT2 LI UF Sensor)
  • Use with Ultraflat DALI sensor (LS/PD DALI LI UF Sensor)
  • Constant lumen function
  • Non-isolated drivers
  • DALI-2 certified (Part -101,-102 and -207)
Family datasheet

Electrical data

Nominal voltage 220…240 V
Mains frequency 50…60 Hz
Input voltage AC 198…264 V

Permitted voltage range

Input voltage DC 176…276 V
Current set DALI
Current set NFC
Current set LEDset
Current set Programmable
Total harmonic distortion < 10 %
Power factor λ > 0.98
ECG efficiency ≤93 %
Device power loss 4.0 W
Power loss in stand-by mode <0.25 W
Protective conductor current <0.5 mA
Inrush current 10 A
Max. ECG no. on circuit breaker 10 A (B) 18
Max. ECG no. on circuit breaker 16 A (B) 30
Surge capability (L/N-Ground) 2 kV
Surge capability (L-N) 1 kV
Nominal output voltage 54…240 V
U-OUT (working voltage) < 250 V
Nominal output current 75…400 mA


Output current tolerance ±3 %
Output ripple current (100 Hz) < 1 %
Nominal output power 4…38 W
Galvanic isolation Non isolated

Dimensions & weight

Length 360.0 mm
Width 30.0 mm
Height 11.0 mm
Mounting hole spacing, length 350.0 mm
Product weight 180.00 g
Cable cross-section, input side 0.5…1.5 mm²
Cable cross-section, output side 0.5…1.5 mm²
Wire preparation length, input side 8.5…9.5 mm
Wire preparation length, output side 8.5…9.5 mm

Colors & materials

Casing material Metal

Temperatures & operating conditions

Ambient temperature range -25…+60 °C
Maximum temperature at tc test point 75 °C
Max.housing temperature in case of fault 110 °C
Permitted rel. humidity during operation 5…85 %

Maximum 56 days/year at 85 %


ECG lifetime 50000 h

Additional product data

Encapsulated No


Programming interface DALI, NFC
Dimmable Yes
Dimming interface DALI
Dimming interface Touch DIM
Dimming interface Touch DIM Sensor
Dimming range 1…100 %
Dimming method Full analogue dimming
Constant lumen function Programmable
Overheating protection Automatic reversible
Overload protection Automatic reversible
Short-circuit protection Automatic reversible
No-load proof Yes
Max. cable length to lamp/LED module 2.0 m
Suitable for fixtures with prot. class I
Suitable for emergency lighting Yes
Type of connection, output side Push terminal
Number of channels 1

Certificates & standards

Approval marks – approval CE
Approval marks – approval EL
Approval marks – approval ENEC 10
Approval marks – approval VDE-EMC
Approval marks – approval CCC
Approval marks – approval RCM
Standards Acc. to EN 61347-1/Acc. to EN 61347-2-13/Acc. to EN 55015/Acc. to EN 61547/Acc. to EN 61000-3-2/Acc. to EN 62384/Acc. to EN 62386
Type of protection IP20

Logistical data

Temperature range at storage -25…85 °C






4052899957022 UNV
4052899957091 VS
385mm x N/A x 62mm 3735.00g 3.82dm³