iW3636
Single-Stage LED Driver with PFC
Supports Wide Range of Dimming Interfaces
1 Description
The iW3636 is a high-performance, single-stage AC/DC power controller for PWM dimmable LED driver with power
factor (PF) correction. It supports most commonly used isolated and non-isolated flyback and buck-boost topologies.
The device operates in constant on-time mode to achieve high power factor (> 0.9) across a wide load range. It uses
Dialog’s PrimAccurate™ advanced primary-side sensing technology to achieve excellent output current regulation over
line and load variation without the need for secondary feedback components. It also eliminates the need for external loop
compensation while maintaining stability over all operating conditions.
The iW3636 offers a 1% to 100% dimming range and provides a dedicated PWM dimming input pin that supports a
wide variety of dimming application interfaces such as wireless modules, MCUs or 0-10V interfaces. When working with
Dialog’s secondary-side SSL PWM signal generator IC, the iW339, the iW3636 adopts a proprietary technique to support
accurate dimming by eliminating the impact from the non-ideal characteristics of optocouplers. In addition, the iW3636
accepts a secondary PWM or analog input to allow maximum output current configuration control.
Dialog’s innovative proprietary technology maximizes the iW3636 performance in an SOIC-8 package. It provides two
multi-function pins to configure IC functions such as the dimming curve and minimum dimming level. The iW3636 also
enables the active start-up scheme to achieve the shortest possible start-up time without sacrificing active efficiency. By
adaptively controlling the maximum operating frequency at different dimming levels, it helps eliminate audible noise and
achieve low standby power consumption.
2 Features
●● Universal AC input (90VAC - 305VAC) or DC input
voltage
●● Configurable minimum dimming setting: dim-to-off,
1%, 5% or 10%
●● Enhanced MOSFET driver supports up to 90W output ●●
power in an SOIC-8 package
●●
●● Primary-side control achieves very tight line and load
●●
regulation (±3%)
●●
●● PF > 0.9 and THD < 20% across wide output power
range
●●
●● Dual dimming interfaces
●●
●● Supports fully isolated 0-10V dimming with Dialog’s
iW339 interface controller
●● Low standby power
●● Wide dimming range 1% - 100%
Wide VCC operating range from 7.5V to 30V
Built-in over-temperature protection or by external NTC
Configurable dimming curve: linear or logarithmic
Built-in soft-start achieves fast and smooth start-up for
all different operating conditions
Active start-up scheme enables fastest possible start-up
Built-in single-point fault protection features: output
open, output over-voltage, output short and input
voltage under-voltage protections
●● Light-off mode with soft-off feature and configurable
voltage regulation value
●● Configurable 72kHz or 90kHz PWM switching
frequency with quasi-resonant operation
3 Applications
●● Intelligent and wireless LED lighting
●● Dimming LED ballast
Product Summary
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Rev. 1.0
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23-Feb-2019
© 2019 Dialog Semiconductor
iW3636
Single-Stage LED Driver with PFC
Supports Wide Range of Dimming Interfaces
L
VOUT
N
RTN
U1
iW3636
OUTPUT
VCC
ISENSE
VIN
NTC/DIM2
VSENSE
GND
DIM1
PWM
MCU or
Wireless
Module
NTC
Figure 3.1 : iW3636 Typical Application Circuit (Wireless Dimming with NTC Derating Using Depletion-mode FET as Active
Start-up Device).
L
VOUT
N
RTN
iW339
U1
iW3636
ISENSE
NTC/DIM2
GND
VCC
VIN
3.3V
LDO
OUTPUT
3-in-1
Dimming
Control
0-10V PWM
VCC
VIN
DRV
DIM
or
10V
0-10V Analog
0V
or
VSENSE
FLT
SD
GND
CF
Resistive
DIM1
PWM
Figure 3.2 : iW3636 Typical Application Circuit (3-in-1 Dimming with Maximum Current Modulated by the Voltage at NTC/
DIM2 Pin and Using Enhancement-mode FET as Active Start-up Device).
Product Summary
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Rev. 1.0
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23-Feb-2019
© 2019 Dialog Semiconductor
iW3636
Single-Stage LED Driver with PFC
Supports Wide Range of Dimming Interfaces
4 Pinout Description
iW3636
DIM1 8
1 NTC/DIM2
2 ISENSE
VIN 7
VSENSE 6
3 GND
VCC 5
4 OUTPUT
Figure 4.1 : 8-Lead SOIC-8 Package
Pin Number
Pin Name
Type
1
NTC/DIM2
Digital Input /
Analog In/Out
Used for external temperature sensing via an NTC resistor, or to provide a 2nd
dimming interface via PWM signal or analog signal (0 – 1.8V).
2
ISENSE
Analog Input
Provides primary current sense for cycle-by-cycle peak current control and
limit during normal operation, and serves as a configuration pin during startup.
3
GND
Ground
Ground.
4
OUTPUT
Output
Gate drive for external MOSFET switch.
5
VCC
Power
IC power supply.
6
VSENSE
Analog Input
Provides output voltage sense for primary regulation during normal operation,
and serves as a configuration pin during startup.
7
VIN
Analog Input
Dual function. Used to control active start-up devices and sense line voltage.
8
DIM1
Digital Input
PWM dimming input detection.
Product Summary
www.dialog-semiconductor.com
Pin Description
Rev. 1.0
3 of 6
23-Feb-2019
© 2019 Dialog Semiconductor
iW3636
Single-Stage LED Driver with PFC
Supports Wide Range of Dimming Interfaces
5 Absolute Maximum Ratings
Absolute maximum ratings are the parameter values or ranges which can cause permanent damage if exceeded.
Parameter
Symbol
Value
Units
DC supply voltage range (pin 5, ICC = 10mA max)
VCC
-0.3 to 31
V
Continuous DC supply current at VCC pin
ICC
20
mA
VIN (pin 7)
-0.3 to 31
V
Output (pin 4)
-0.3 to 31
V
VSENSE input (pin 6, IVSENSE ≤ 10mA)
-0.3 to 7
V
ISENSE input (pin 2)
-0.3 to 7
V
NTC/DIM2 (pin 1)
-0.3 to 7
V
DIM1 (pin 8)
-0.3 to 7
V
Maximum junction temperature
TJMAX
150
°C
Operating junction temperature
TJOPT
-40 to 150
°C
Storage temperature
TSTG
-65 to 150
°C
Thermal resistance junction-to-ambient
θJA
170
°C/W
±2,000
V
±100
mA
ESD rating per JEDEC JS-001-2017
Latch-up test per JESD78E
Product Summary
www.dialog-semiconductor.com
Rev. 1.0
4 of 6
23-Feb-2019
© 2019 Dialog Semiconductor
iW3636
Single-Stage LED Driver with PFC
Supports Wide Range of Dimming Interfaces
6 Physical Dimensions
7 Ordering Information
Part no.
Options
Package
Description
iW3636-01
PWM DIM2 interface
SOIC-8
Tape & Reel1
iW3636-02
NTC DIM2 interface
SOIC-8
Tape & Reel1
iW3636-03
Analog DIM2 interface
SOIC-8
Tape & Reel1
iW3636-31
Analog DIM2 interface (Internal OTP Disabled)
SOIC-8
Tape & Reel1
Note 1: Tape and reel packing quantity is 2,500/reel. Minimum packing quantity is 2,500.
Product Summary
www.dialog-semiconductor.com
Rev. 1.0
5 of 6
23-Feb-2019
© 2019 Dialog Semiconductor
iW3636
Single-Stage LED Driver with PFC
Supports Wide Range of Dimming Interfaces
Disclaimer
Information in this document is believed to be accurate and reliable. However, Dialog Semiconductor does not give any representations or
warranties, expressed or implied, as to the accuracy or completeness of such information. Dialog Semiconductor furthermore takes no responsibility
whatsoever for the content in this document if provided by any information source outside of Dialog Semiconductor.
Dialog Semiconductor reserves the right to change without notice the information published in this document, including without limitation the
specification and the design of the related semiconductor products, software and applications.
Applications, software, and semiconductor products described in this document are for illustrative purposes only. Dialog Semiconductor makes no
representation or warranty that such applications, software and semiconductor products will be suitable for the specified use without further testing
or modification. Unless otherwise agreed in writing, such testing or modification is the sole responsibility of the customer and Dialog Semiconductor
excludes all liability in this respect.
Customer notes that nothing in this document may be construed as a license for customer to use the Dialog Semiconductor products, software and
applications referred to in this document. Such license must be separately sought by customer with Dialog Semiconductor.
All use of Dialog Semiconductor products, software and applications referred to in this document are subject to Dialog Semiconductor’s Standard
Terms and Conditions of Sale, available on the company website (www.dialog-semiconductor.com) unless otherwise stated.
Dialog and the Dialog logo are trademarks of Dialog Semiconductor plc or its subsidiaries. All other product or service names are the property of
their respective owners.
© 2019 Dialog Semiconductor. All rights reserved.
RoHS Compliance
Dialog Semiconductor’s suppliers certify that its products are in compliance with the requirements of Directive 2011/65/EU of the European
Parliament on the restriction of the use of certain hazardous substances in electrical and electronic equipment. RoHS certificates from our suppliers
are available on request.
Contacting Dialog Semiconductor
United Kingdom (Headquarters)
Dialog Semiconductor (UK) LTD
Phone: +44 1793 757700
North America
Dialog Semiconductor Inc.
Phone: +1 408 845 8500
Hong Kong
Dialog Semiconductor Hong Kong
Phone: +852 2607 4271
China (Shenzhen)
Dialog Semiconductor China
Phone: +86 755 2981 3669
Germany
Dialog Semiconductor GmbH
Phone: +49 7021 805-0
Japan
Dialog Semiconductor K. K.
Phone: +81 3 5769 5100
Korea
Dialog Semiconductor Korea
Phone: +82 2 3469 8200
China (Shanghai)
Dialog Semiconductor China
Phone: +86 21 5424 9058
The Netherlands
Dialog Semiconductor B.V.
Phone: +31 73 640 8822
Taiwan
Dialog Semiconductor Taiwan
Phone: +886 281 786 222
Email
info_pcbg@diasemi.com
Web site:
www.dialog-semiconductor.com
Product Summary
www.dialog-semiconductor.com
Rev. 1.0
6 of 6
23-Feb-2019
© 2019 Dialog Semiconductor
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