Power Controller. iW3626 Datasheet

iW3626 Controller. Datasheet pdf. Equivalent

iW3626 Datasheet
Recommendation iW3626 Datasheet
Part iW3626
Description Off-Line Digital Power Controller
Feature iW3626; iW3626 Off-Line Digital Power Controller for LED Driver with High-Power Factor and Low-Ripple Curre.
Manufacture Dialog Semiconductor
Datasheet
Download iW3626 Datasheet




Dialog Semiconductor iW3626
iW3626
Off-Line Digital Power Controller for LED Driver
with High-Power Factor and Low-Ripple Current
1 Description
The iW3626 is a high performance, single-stage AC/DC power controller for LED luminaires with power factor (PF)
correction. The device uses digital control technology to build unique hybrid mode control in PWM flyback power
supplies to achieve high power factor meanwhile minimizing LED current ripple. This distinctive control approach
enables the capability for users to make trade-offs between PF and LED current ripple in a single-stage design. It can
achieve excellent LED current regulation over line and load variation, without the need for secondary feedback circuit.
The built-in temperature sensor along with control logic can automatically adjust output current in real-time without
visible flicker during the process. The iW3626 operates in quasi-resonant mode to provide high efficiency along with a
number of key built-in protection features while minimizing the external component count, simplifying EMI design, and
lowering the total bill of material cost. It also eliminates the need for loop compensation components while maintaining
stability over all operating conditions. The built-in power limit function enables optimized transformer design in
universal off-line applications with input voltage from 90VAC to 277VAC.
Dialog’s innovative proprietary technology maximizes the iW3626 performance in a tiny SOT-23 package. The
iW3626 offers two multi-function pins allowing users to configure PF and OTP as required with no cost or size impact,
thereby providing design flexibility. The active start-up scheme enables the shortest possible start-up time without
sacrificing active efficiency.
2 Features
● All-in-one non-dimmable low-cost off-line LED driver ● Supports wide range of LED numbers with tight current
(isolated and non-isolated applications)
regulation
● Supports universal input voltage range (90VAC to
277VAC) and output power up to 10W
● High power factor (PF) with low current-ripple control
technology
● Stabilized LED current-ripple control without visible
shimmer or flicker
● Active start-up scheme enables fastest possible start-
up
User-configurable power factor setting (>0.7 to >0.9)
User-configurable over-temperature protection (OTP)
with temperature-current derating
● Very tight LED current regulation (±5%) across line
and load, and within primary inductance tolerance
(±20%)
Isolated design without opto-coupler
72kHz maximum PWM switching frequency with quasi-
resonant operation
● Dynamic base current control to drive low-cost BJT
EZ-EMI® design enhances manufacturability
● Built-in single-point fault protection features: LED
open-/short-circuit protection and over-current
protection
3 Applications
● No audible noise over entire operating range
● Solid-state LED lighting
● LED lighting ballast
Product Summary
www.dialog-semiconductor.com
Rev. 1.4
1 of 6
28-June-2016
© 2016 Dialog Semiconductor



Dialog Semiconductor iW3626
iW3626
Off-Line Digital Power Controller for LED Driver
with High-Power Factor and Low-Ripple Current
L
N
U1
iW3626
6 OUTPUT
VCC 1
4 CS/PF
ASU 3
5 GND
FB/OTP 2
+
VOUT-
+
VOUT+
Figure 3.1 : iW3626 Typical Application Circuit (Non-isolated Application)
L
N
U1
iW3626
6 OUTPUT
VCC 1
4 CS/PF
ASU 3
5 GND
FB/OTP 2
+
VOUT
+
GND
Figure 3.2 : iW3626 Typical Application Circuit (Isolated Application)
Product Summary
www.dialog-semiconductor.com
Rev. 1.4
2 of 6
28-June-2016
© 2016 Dialog Semiconductor



Dialog Semiconductor iW3626
iW3626
Off-Line Digital Power Controller for LED Driver
with High-Power Factor and Low-Ripple Current
L
N
U1
iW3626
6 OUTPUT
VCC 1
4 CS/PF
ASU 3
5 GND
FB/OTP 2
+
VOUT
+
GND
Figure 3.3 : iW3626 Typical Application Circuit (Isolated Application without Using Active Start-up Device)
Product Summary
www.dialog-semiconductor.com
Rev. 1.4
3 of 6
28-June-2016
© 2016 Dialog Semiconductor







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