iW3623 Datasheet PDF - iWatt
| Part Number | iW3623 | |
| Description | AC/DC Digital Power Controller | |
| Manufacturers | iWatt | |
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There is a preview and iW3623 download ( pdf file ) link at the bottom of this page. Total 16 Pages | ||
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iW3623
AC/DC Digital Power Controller for
High Power Factor Off-Line LED Drivers
1.0 Features
●● Isolated AC/DC off-line LED driver
●● Power factor > 0.95 for wide input voltage range
100 – 277VAC
●● Total harmonic distortion (THD) < 10%
●● Under 5% 100Hz/120Hz output current ripple
●● Resonant control to achieve high efficiency
●● LED current foldback with external NTC
●● Small size design
xx Small size input bulk capacitor
xx Small size output capacitor
xx Small transformer
●● Primary-side sensing eliminates the need for
opto-isolator feedback and simplifies design
●● Tight LED current regulation ± 5%
●● Under 0.5 second start-up time
●● Hot-plug LED module support
●● Multiple protection features:
xx LED open circuit protection
xx Single-fault protection
xx Over-current protection
xx LED short-circuit protection
xx Current sense-resistor-short-circuit protection
xx Input over-voltage and brown-out protection
2.0 Description
The iW3623 is a high-performance AC/DC off-line power
supply controller for LED luminaires. The iW3623 combines
power factor correction and LED current regulation into one
controller. It achieves PF > 0.95 and THD < 10% for 100–
277VAC input voltage range.
The iW3623 operates in quasi-resonant mode to provide
high efficiency. The device uses iWatt’s advanced primary-
side sensing technology to achieve excellent line and load
regulation without secondary-feedback circuit. In addition,
the iW3623’s pulse-by-pulse waveform analysis technology
allows accurate LED current regulation. The iW3623
maintains stability over all operating conditions without the
need for loop compensation components.
3.0 Applications
●● Non-dimmable LED lamps and luminaires
●● Optimized for up to 40W output power
Rev. 0.8
iW3623
Preliminary
September 10, 2012
Page 1
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iW3623
AC/DC Digital Power Controller for
High Power Factor Off-Line LED Drivers
6.0 Electrical Characteristics
VCC = 12 V, -40°C ≤ TA ≤ 85°C, unless otherwise specified (Note 1)
Parameter
Symbol Test Conditions
VIN SECTION
Start-up voltage threshold (Note 2)
VIN_ST
TA= 25°C, CFG resistor = 20kW
TA= 25°C, CFG resistor = 4.7kW
Brown-out threshold (Note 3)
Over-voltage shutdown threshold
Input impedance
VIN range
VBR_TH
VIN_OVP
ZIN
VIN
TA= 25°C, CFG resistor = 20kW
TA= 25°C, CFG resistor = 4.7kW
TA = 25°C, positive edge
After start-up
VCB SECTION
Over-voltage shutdown threshold
Input impedance
VCB_OVP
ZCB
TA = 25°C, positive edge
After start-up
VCB range
FVSENSE SECTION
Input leakage current
VCB
IBVS(FVSENSE)
VSENSE = 2V
Normal voltage threshold
VSENSE(NOM) TA= 25°C, negative edge
Min
1.512
0
1.62
0
1.521
Typ
0.283
0.212
0.283
0.212
1.68
5
1.8
15
1.536
Max
1.848
1.8
1.98
1.8
1
1.551
Unit
V
V
V
V
V
kW
V
V
kW
V
µA
V
Output OVP threshold (default)
BVSENSE SECTION
Input leakage current
FDRV SECTION
Output low level ON-resistance
Output high level ON-resistance 1
Maximum switching frequency
(Note 4)
BDRV SECTION
Output low level ON-resistance
Maximum switching frequency
(Note 4)
Output source current
VSENSE(MAX) TA= 25°C, negative edge
IBVS(BVSENSE)
VSENSE = 0.1V
RDS_ON_LO(FDRV)
RDS_ON_HI(FDRV)
fSW_FDRV(MAX)
ISINK = 5mA
ISOURCE = 5mA
RDS_ON_LO(BDRV) ISINK = 5mA
fSW_BDRV(MAX)
IB
if VIN_A < 130mV
if VIN_A > 130mV
1.683 1.7 1.717 V
1 µA
16 W
25 W
200 kHz
1W
200 kHz
90 kHz
90 mA
Rev. 0.8
iW3623
Preliminary
September 10, 2012
Page 5
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for iW3623 electronic component. |
| Information | Total 16 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ iW3623.PDF Datasheet ] | |
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