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STRG6652 Datasheet(PDF) 1 Page - Allegro MicroSystems

Part # STRG6652
Description  OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATOR
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

STRG6652 Datasheet(HTML) 1 Page - Allegro MicroSystems

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The STR-G6651 is specifically designed to satisfy the requirements
for increased integration and reliability in off-line quasi-resonant flyback
converters. This device incorporates the primary control and drive
circuit with a discrete avalanche-rated power MOSFET.
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 device is provided in a five-pin
over-molded TO-220 style package, affording dielectric isolation without
compromising thermal characteristics. Two lead forms are available
(with and without the suffix ‘-LF’) to accommodate printed wiring board
layout or mechanical constraints.
Proven in substantial volumes, the STR-G6651 is a robust low-risk
solution for off-line power supplies particularly where management of
EMI at the source is a significant element of the system design.
FEATURES
I Quasi-Resonant Operation
I Output Power to 66 W
I Low-Loss, Pulse-Ratio-Control Standby Mode
I Temperature-Compensated Pulse-by-Pulse Over-Current Protection
I Latched Over-Voltage and Thermal Protection
I Under-Voltage Lockout with Hysteresis
I Active Low-Pass Filter for Enhanced Light-Load Stability
I Switched Attenuation of Leading-Edge Current-Sensing Signal
I Regulated Soft Gate Drive
I Adjustable Switching Speed for EMI Control
I Overmolded Five-Pin Package
OFF-LINE QUASI-RESONANT
FLYBACK SWITCHING REGULATOR
Always order by complete part number: STR-G6651 .
STR-G6651
ABSOLUTE MAXIMUM RATINGS
at T
A = +25°C
Control Supply Voltage, V
IN . . . . . . .
35 V
Drain-Source Voltage, V
DS . . . . . . . .
650 V
Drain Current, I
D
continuous . . . . . . . . . . . . . . . . . .
2.7 A
single-pulse, t
w ≤ 1 ms . . . . . . . .
7.2 A
Avalanche Energy, E
AS
single-pulse . . . . . . . . . . . . . . .
158 mJ
Over-Current Protection Voltage Range,
V
OCP . . . . . . . . . . . . . . .
-0.3 V to +6 V
Insulation RMS Voltage,
V
WM(RMS) . . . . . . . . . . . . . . . . . .
2000 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
Dwg. PK-011
UVLO
OVP
TSD
LATCH
OSC.
FDBK


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