Intelligent CC LED Driver Technology

How programmable, multi-protocol constant current drivers let one driver suit many LED modules and control systems, and how to choose the right one.

Intelligent programmable constant current LED drivers from Ltech and Lifud

Overview

What is an intelligent CC LED driver?

An intelligent constant current (CC) driver has its output current and settings programmed rather than fixed. Most models are set by NFC from a phone app or programmer, in steps as small as 1mA, so one driver can be matched to many different LED modules. Multi-protocol models also accept several dimming inputs, so the same driver suits DALI, 0-10V or simple push switch projects.

Our range from Ltech and Lifud covers 8W to 75W and 100mA to 1800mA. It includes the multi-protocol Ltech SE-65-500-1800-W2X2, NFC programmable DALI-2 SE-W1D and tuneable white SE-W2D drivers, compact DIP switch SE-W1DS drivers, the Lifud LF-GSD060YC with DALI, 0-10V and push dimming, and the Lifud LF-ACD075D for DALI D4i luminaires.

Output current set by NFC in 1mA steps, or by DIP switch
DALI-2 DT6, DT8 and D4i models
0-10V, 1-10V, PWM, resistor and push dimming on multi-protocol models
Ultra-deep dimming down to 0.01% on Ltech SE models
Long life and 5 to 8 year warranties

Intelligent CC range at a glance

Brands: Ltech, Lifud
Output current: 100mA – 1800mA
Power: 8W – 75W
Programming: NFC (1mA steps) or DIP
DALI: DT6, DT8, D4i
Other inputs: 0-10V, 1-10V, PWM, Rx, push
Dimming: Down to 0.01% (SE series)
Warranty: 5 to 8 years

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The technology

How intelligent CC drivers work

Inside the driver, a microcontroller stores its settings: the output current, the dimming interface, the DALI address and options such as fade time or dimming curve. An NFC programmer or phone app writes these settings, and the same profile can be copied to many drivers in seconds.

On multi-protocol drivers, the control input can be DALI-2, 0-10V (or 1-10V, PWM and resistor) or a mains push switch, chosen to suit the project.

The driver then regulates the programmed constant current into the LED module and dims it with high-frequency PWM, down to 0.01% on Ltech SE models.

Simplified illustration: the NFC app programs the driver's current and settings, and the driver then follows whichever control input is connected.

Control options

Dimming inputs explained

The inputs supported across our intelligent CC range, and which drivers offer them.

Input	How it works	Best for	Our drivers
DALI-2 DT6	Digital 2-wire bus, each driver addressed	Commercial lighting control	SE-W1DS, SE-W1D, SE-W2X2, LF-GSD060YC
DALI-2 DT8	DALI with colour temperature control	Tuneable white	SE-W2D, SE-W2X2
DALI D4i	DALI-2 with energy and diagnostic data, sensor power	Smart and outdoor luminaires	LF-ACD075D
0-10V / 1-10V, PWM, Rx	Analogue voltage, PWM signal or fixed resistor	Simple wired dimming zones	SE-W2X2, LF-GSD060YC
Push	Mains push switch: short press on/off, long press dims	Local control, no controller	SE-W2X2, SE-W1DS, LF-GSD060YC

Our range

Intelligent CC drivers compared

Choose the current to match the LED module, then check its forward voltage is within the driver's range at that current.

Model	Output current	Output voltage	Max. power	Set by	Control
Ltech SE-65-500-1800-W2X2	500 – 1800mA	9 – 54V	65W	NFC, 1mA steps	DALI-2 DT6/DT8, 0-10V, push
Ltech SE-10-350-700-W1DS	350 – 700mA	2 – 12V	8.4W	DIP switch, 50mA steps	DALI DT6
Ltech SE-12-100-400-W1DS	100 – 400mA	9 – 42V	12W	DIP switch, 50mA steps	DALI DT6
Ltech SE-12-350-700-W1DS	350 – 700mA	9 – 24V	12W	DIP switch, 50mA steps	DALI DT6
Ltech SE-30-200-800-W1D	200 – 800mA	9 – 42V	30W	NFC, 1mA steps	DALI DT6
Ltech SE-40-300-1050-W1D	300 – 1050mA	9 – 42V	40W	NFC, 1mA steps	DALI DT6
Ltech SE-20-100-700-W2D	100 – 700mA, 2 channels	9 – 42V	20W total	NFC, 1mA steps	DALI-2 DT6/DT8 tuneable white
Lifud LF-GSD060YC	1100 – 1500mA	25 – 42V	60W	DIP switch, 50mA steps	DALI-2, 0-10V/PWM/Rx, push
Lifud LF-ACD075D-1050-115	200 – 1050mA	35 – 115V	75W	NFC	DALI D4i, 24V aux output

Also on the range page: the Ltech LT-84A converts DALI or DMX to four 0-10V or PWM outputs for other drivers.

Benefits

Advantages of intelligent CC LED drivers

Why luminaire makers and installers choose programmable, multi-protocol drivers.

NFC programming

Set the current, interface and address from a phone app or programmer, and copy profiles in seconds.

1mA precision

Match the current exactly to each LED module, and balance light output between luminaires.

Fewer driver types

One wide-range driver covers many modules and projects, simplifying stock.

Multi-protocol

DALI-2, 0-10V and push dimming in one driver, ready for whichever control system the project uses.

Ultra-deep dimming

Down to 0.01% with flicker-free T-PWM at 3600Hz on Ltech SE models.

D4i ready

DALI D4i drivers report energy and diagnostic data and power sensors from the luminaire.

Selection & set-up

Choosing and setting up an intelligent CC driver

Pick the control system: DALI-2 DT6 for dimming, DT8 for tuneable white, D4i for smart luminaires, or a multi-protocol driver for flexibility.
Match the current range: choose a driver whose range includes the LED module's rated current.
Check the voltage window: the module's forward voltage must sit within the driver's output range at that current.
Program before power-up: set the current by NFC or DIP switch before connecting the LED load.
Save a profile: store the settings in the app and copy them to every driver of the same luminaire type.
Address DALI drivers: assign addresses and groups from the DALI controller, or by NFC where supported.

Related technology and products

Compare other dimming methods and complete the installation:

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1mA

Current setting steps

0.01%

Dimming depth (SE series)

1800mA

Maximum output current

100,000h

Rated life, up to

Where intelligent CC drivers are used

Wherever luminaires need precise current, flexible control and smart features.

Luminaire makers

One driver programmed for many products and module options.

Offices

DALI-2 panels and downlights, with tuneable white for wellbeing.

Retail

Spotlights matched precisely in brightness across a store.

Healthcare and education

Tuneable white and deep dimming in wards and classrooms.

Street and outdoor

DALI D4i luminaires with sensors and energy reporting.

Museums and hospitality

Ultra-deep, flicker-free dimming for displays and ambience.

FAQ

Intelligent CC driver questions

It is a constant current LED driver whose output current and settings are programmed rather than fixed, and which accepts more than one dimming input. The Ltech SE-65-500-1800-W2X2, for example, accepts DALI-2 DT6 or DT8, 0-10V (also 1-10V, PWM and resistor) and push dimming, with the current set by NFC in 1mA steps.

An NFC programmer or a phone app with NFC is held against the driver to read and write its settings. Depending on the model, you can set the output current in steps down to 1mA, the dimming interface, the DALI address and other parameters, then copy the same settings quickly to other drivers.

DT6 is the DALI device type for single channel LED dimming. DT8 adds colour control, such as colour temperature for tuneable white, as used by the SE-W2D and SE-65-500-1800-W2X2. D4i is a DALI-2 standard for intelligent luminaires that report energy and diagnostic data and can power sensors, as on the Lifud LF-ACD075D with its 24V auxiliary output.

One programmable driver can be set to suit many different LED modules, so fewer driver types need to be stocked and the light output of each luminaire can be matched exactly. Setting the current in 1mA steps also allows fine adjustment of brightness between luminaires.

The Ltech SE series dims from 100% down to 0.01% with T-PWM at 3600Hz, flicker free to IEEE 1789. The Lifud LF-GSD060YC dims down to 0.1%.

Intelligent CC LED Driver Technology