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STRF6676 Datasheet(PDF) 1 Page - Allegro MicroSystems

Part No. STRF6676
Description  OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS
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Maker  ALLEGRO [Allegro MicroSystems]
Homepage  http://www.allegromicro.com
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STRF6676 Datasheet(HTML) 1 Page - Allegro MicroSystems

 
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The Series STR-F6600 is specifically designed to satisfy the require-
ments for increased integration and reliability in off-line quasi-resonant
flyback converters. The series incorporates a primary control and drive
circuit with discrete avalanche-rated power MOSFETs.
Covering the power range from below 25 watts up to 300 watts for
100/115/230 VAC inputs, and up to 150 watts for 85 to 265 VAC
universal input, these devices can be used in a range of applications,
from battery chargers and set top boxes, to televisions, monitors, and
industrial power supply units.
Cycle-by-cycle current limiting, under-voltage lockout with hyster-
esis, over-voltage protection, and thermal shutdown protects the power
supply during the normal overload and fault conditions. Over-voltage
protection and thermal shutdown are latched after a short delay. The
latch may be reset by cycling the input supply. Low-current startup and
a low-power standby mode selected from the secondary circuit completes
a comprehensive suite of features. The series is provided in a five-pin
overmolded TO-3P style package, affording dielectric isolation without
compromising thermal characteristics.
FEATURES
s Flyback Operation with Quasi-Resonant Soft Switching
for Low Power Dissipation and EMI
s Rugged Avalanche-Rated MOSFET
s Choice of MOSFET Voltage and r
DS(on)
s Full Over-Current Protection (no blanking)
s Under-Voltage Lockout with Hysteresis
s Over-Voltage Protection
s Direct Voltage Feedback
s Low Start-up Current (<400
µA)
s Low-Frequency, Low-Power Standby Operation
s Overmolded 5-Pin Package
OFF-LINE QUASI-RESONANT
FLYBACK SWITCHING REGULATORS
Always order by complete part number, e.g., STR-F6652 .
Series STR-F6600
ABSOLUTE MAXIMUM RATINGS
at T
A = +25°C
Control Supply Voltage, V
IN . . . . . . . .
35 V
Drain-Source Voltage, V
DS
Series STR-F6620 . . . . . . . . . . . . 450 V
Series STR-F6630 . . . . . . . . . . . . 500 V
Series STR-F6650 . . . . . . . . . . . . 650 V
Series STR-F6670 . . . . . . . . . . . . 900 V
Drain Switching Current, I
D . . .
See Table
Peak Drain Current, I
DM . . . . . .
See Table
Avalanche Energy, E
AS . . . . . . .
See Table
OCP/FB Voltage Range,
V
OCP . . . . . . . . . . . . . . .
-0.3 V to +6 V
Package Power Dissipation, P
D
control (V
IN x IIN(ON)) . . . . . . . . .
0.8 W
total . . . . . . . . . . . . . . . . . . . See Graph
FET Channel Temperature, T
J . . .
+150
°C
Internal Frame Temperature, T
F . .
+125
°C
Operating Temperature Range,
T
A . . . . . . . . . . . . . . .
-20
°C to +125°C
Storage Temperature Range,
T
S . . . . . . . . . . . . . . . .
-40
°C to +125°C
LATCH
Dwg. PK-011-1
UVLO
OVP
TSD
OSC.
FDBK
INTERIM DATA SHEET
(Subject to change without notice)
February 22, 2000
TM


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