STR-S6525 Datasheet, PDF (1/8 Pages) Allegro MicroSystems – OFF-LINE SWITCHING REGULATOR WITH POWER MOSFET OUTPUT

STR-S6525
OFF-LINE SWITCHING REGULATOR
– WITH POWER MOSFET OUTPUT
The STR-S6525 is specifically designed to meet the requirement
for increased integration and reliability in off-line flyback converters
DRAIN 1
operating in a constant OFF-time mode. The device incorporates the
SOURCE 2
COMMON 3
T _{SYNC 4}
C _{VIN 5}
U FDBK 6
SOFT START 7
D Y _FAULT-LATCH
O ^{L TRIGGER}
8
OVER-CURRENT
PROTECTION
9
OSC.
FAULT
LATCH
R
S
FAULT
UVLO
REF.
PR ^{ON Dwg.PK-002-1}
ABSOLUTE MAXIMUM RATINGS
D ^E _{Supply Voltage, VIN ........................... 35 V}
E ^{C Drain-Source Voltage, V}_DS ^{.............. 600 V}
N _{Continuous Drain Current, ID ............ 6.0 A}
U _{E 1 ms Single-Pulse Drain Current,}
IN ^{R IDM ................................................. 24 A}
Single-Pulse Avalanche Energy,
T ^{E EA .............................................. 400 mJ}
F _{Feedback Input Current, IFDBK ........ 20 mA}
N E Fault-Latch Trig. Input Current, IFL 1.0 mA
dc ≤ 25%, I_FLM ........................... -50 mA
O R _{Soft-Start Output Current, ISS ....... -3.0 mA}
C _{R Over-Current Protection Voltage,}
S V_OCP ............................................. 3.5 V
I ^O _{Insulation Voltage,VWM(RMS) ........... 2000 V}
D ^{F Package Power Diss., P}_D ^{........ See Graph}
FET Junction Temperature, T_J ...... +150°C
— _{Internal Frame Temperature, TF ... +125°C}
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
Operating Temperature Range,
T_A ............................... -20°C to +125°C
s External Synchronization Capability
Storage Temperature Range,
T_stg ............................. -30°C to +125°C
Always order by complete part number: STR-S6525 .
™