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STR-S6525 Datasheet(PDF) 1 Page - Allegro MicroSystems

Part No. STR-S6525
Description  OFF-LINE SWITCHING REGULATOR WITH POWER MOSFET OUTPUT
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Maker  ALLEGRO [Allegro MicroSystems]
Homepage  http://www.allegromicro.com
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STR-S6525 Datasheet(HTML) 1 Page - Allegro MicroSystems

   
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DISCONTINUED
PRODUCT
FOR
REFERENCE
ONL
Y
The STR-S6525 is specifically designed to meet the requirement
for increased integration and reliability in off-line flyback converters
operating in a constant OFF-time mode. The device incorporates the
primary control and drive circuit with a discrete avalanche-rated high-
voltage power MOSFET.
Crucial system parameters such as maximum ON time and OFF
time are fixed during manufacture. Local control circuit decoupling and
layout are optimized within the device.
Cycle-by-cycle current limiting, soft start, under-voltage lock-out
with hysteresis, over-voltage protection, and thermal shutdown protect
the device during all normal and overload conditions. Over-voltage
protection, thermal shutdown, or an external fault signal be latched.
The dual requirements of dielectric isolation and low transient thermal
impedance and steady-state thermal resistance are satisfied in an over-
molded single-in-line power package.
Proven in substantial volumes, this device and its fixed-frequency
counterparts represents a significant advance in off-line SMPS reliability
growth and integration.
FEATURES
s Constant OFF-Time Converter Operating Mode
s Avalanche-Rated Power MOSFET Switch
s Pulse-by-Pulse Current Limiting
s Latched Over-Voltage and Thermal Protection
s Maximum ON Time and OFF Time Set During Manufacture
s Internal Under-Voltage Lockout with Hysteresis
s Over-Molded SIP with Integral Isolated Heat Spreader
s External Synchronization Capability
Always order by complete part number: STR-S6525 .
OFF-LINE SWITCHING REGULATOR
– WITH POWER MOSFET OUTPUT
STR-S6525
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, V
IN ...........................
35 V
Drain-Source Voltage, V
DS ..............
600 V
Continuous Drain Current, I
D ............ 6.0 A
1 ms Single-Pulse Drain Current,
I
DM ................................................. 24 A
Single-Pulse Avalanche Energy,
E
A .............................................. 400 mJ
Feedback Input Current, I
FDBK ........ 20 mA
Fault-Latch Trig. Input Current, I
FL
1.0 mA
dc
≤ 25%, I
FLM ........................... -50 mA
Soft-Start Output Current, I
SS ....... -3.0 mA
Over-Current Protection Voltage,
V
OCP .............................................
3.5 V
Insulation Voltage,V
WM(RMS) ...........
2000 V
Package Power Diss., P
D ........ See Graph
FET Junction 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
stg ............................. -30°C to +125°C
OVER-CURRENT
PROTECTION
SOURCE
DRAIN
UVLO
COMMON
V IN
Dwg. PK-002-1
SOFT START
FDBK
FAULT
LATCH
REF.
1
2
3
4
5
6
7
OSC.
RS
FAULT
FAULT-LATCH
TRIGGER
8
9
SYNC


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