Power Controller. iW3689 Datasheet

iW3689 Controller. Datasheet pdf. Equivalent

iW3689 Datasheet
Recommendation iW3689 Datasheet
Part iW3689
Description AC/DC Digital Power Controller
Feature iW3689; iW3689 AC/DC Digital Power Controller for Single-Stage High Power Factor Dimmable LED Drivers 1 Desc.
Manufacture Dialog Semiconductor
Datasheet
Download iW3689 Datasheet




Dialog Semiconductor iW3689
iW3689
AC/DC Digital Power Controller for
Single-Stage High Power Factor Dimmable LED Drivers
1 Description
The iW3689 is a single-stage, high-performance AC/DC off-line power supply controller for dimmable LED luminaires. It
applies advanced digital control technology to detect the dimmer type, enabling it to provide dynamic impedance to interface
with the dimmer and to control the LED brightness at the same time.
With advanced dimmer detection technology, the iW3689 can operate with most wall dimmers including leading-edge
dimmers (R-type or R-L type), trailing-edge dimmers (R-C type), and smart dimmers. In addition, the iW3689’s cycle-
by-cycle waveform analysis technology allows for fast dimmer transient response.
In no-dimmer mode, the iW3689 operates the main power converter that delivers current to the LED load in quasi-
resonant mode to provide high power efficiency and low electro-magnetic interference (EMI). When there is no
dimmer on the line, the iW3689 optimizes the power factor and minimizes the current harmonic distortion to the AC
line. The commonly utilized converter topologies for iW3689 are buck-boost and flyback.
The iW3689 uses patented PrimAccurate™ primary-side sensing technology to achieve excellent LED current
regulation under different AC line and LED load voltages, without using a secondary-side feedback circuit and thus
eliminating the need for an opto-coupler.
The iW3689 minimizes the external components count by simplifying the EMI filter with Dialog’s EZ-EMI® technology,
and by integrating current sink, switching, and VCC charging circuit. Additionally, the iW3689 does not require an
auxiliary winding, which eliminates the need for a custom inductor. The digital control loop of the iW3689 maintains
stability over all operating conditions without the need for loop compensation components.
The iW3689 maintains high performance wide-range dimming and achieves excellent dimmer compatibility with a
simple application circuit.
2 Features
● Isolated/non-isolated off-line 120VAC/230VAC LED
driver up to 25W (Note 1)
Resonant control to achieve high efficiency (typical
>85% without dimmer)
● Wide line frequency range (from 45Hz to 66Hz)
● Excellent AC line distortion immunity ensures quality of
Meets IEC61000-3-2 current harmonic requirement
product under real-life circumstances
● Total harmonic distortion < 20% with PF > 0.92
● Over-temperature LED current foldback and
shutdown
● Excellent dimmer compatibility
xx Leading-edge dimmer
xx Trailing-edge dimmer
xx Digital smart dimmer
● Tight LED current regulation (±5%)
● Fast start-up (< 0.5s without dimmer)
Multiple protection features that include:
xx LED open-circuit and short-circuit protection
● Wide dimming range of 1% to 100%
xx Current sensing resistor open circuit and short-
● Intelligent digital control integrates current sink and
circuit protection
VCC maintenance function into power switching circuit
xx Over-current protection
● Advanced IC power management and voltage sensing
enables the use of off-the-shelf inductor
3 Applications
Dimmable LED retrofit lamps up to 25W (Note 1)
● Dimmable LED luminaires up to 25W (Note 1)
Datasheet
www.dialog-semiconductor.com
Rev. 0.4 Preliminary
1 of 22
12-Jan-2016
© 2016 Dialog Semiconductor



Dialog Semiconductor iW3689
iW3689
AC/DC Digital Power Controller for
Single-Stage High Power Factor Dimmable LED Drivers
N
L
iW3689
1 VIN
2 CFG
3 VCC
4 GND
VCB 8
VD 7
VS 6
ISENSE 5
-
+
+
Figure 3.1 : iW3689 Typical Application Circuit
Note 1 : For output power above 12W designs, care should be taken to verify the thermal and reliability constrains
on the IC. IC temperature below 120°C is recommended for proper IC operation.
Datasheet
www.dialog-semiconductor.com
Rev. 0.4 Preliminary
2 of 22
12-Jan-2016
© 2016 Dialog Semiconductor



Dialog Semiconductor iW3689
iW3689
AC/DC Digital Power Controller for
Single-Stage High Power Factor Dimmable LED Drivers
4 Pinout Description
iW3689
1 VIN
2 CFG
3 VCC
4 GND
VCB 8
VD 7
VS 6
ISENSE 5
Figure 4.1 : 8-Lead SOIC-8 Package
Pin Number
1
2
3
4
5
6
7
8
Pin Name
VIN
CFG
VCC
GND
ISENSE
VS
VD
VCB
Type
Pin Description
Analog Input Rectified AC line voltage input.
Analog Input OTP threshold and dimmer mode configuration on start-up.
Power
Power supply for control logic.
Ground Ground.
Analog Input Current sense.
Analog Input Source voltage of MOSFET.
Analog Input Drain voltage of MOSFET.
Analog Input Input capacitor voltage after EMI filter.
Datasheet
www.dialog-semiconductor.com
Rev. 0.4 Preliminary
3 of 22
12-Jan-2016
© 2016 Dialog Semiconductor







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