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STR-S6703 Datasheet(PDF) 1 Page - Allegro MicroSystems |
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STR-S6703 Datasheet(HTML) 1 Page - Allegro MicroSystems |
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1 / 8 page 
OFF-LINE SWITCHING REGULATORS – WITH BIPOLAR SWITCHING TRANSISTOR OSC. OVER-CURRENT PROTECTION BASE COLLECTOR UVLO COMMON VIN Dwg. PK-001 INHIBIT FDBK FAULT LATCH REF. 1 2 3 4 5 6 7 R S FAULT 8 9 SINK DRIVE DRIVE The STR-S6703 and STR-S6704 are specifically designed to meet the requirement for increased integration and reliability in off-line quasi- resonant flyback converters. These devices incorporate the primary control and proportional drive circuit with a third-generation high-voltage bipolar switching transistor. Crucial system parameters such as maximum ON time and OFF time are fixed during manufacture. Local control circuit decoupling and layout are optimized within each device. Cycle-by-cycle current limiting, under-voltage lock-out with hyster- esis, over-voltage protection, and thermal shutdown protect these devices during all normal and overload conditions. Over-voltage protection and thermal shutdown are latched after a short delay. A versatile triple-level inhibit circuit includes the OFF time synchronization required to establish quasi-resonant operation. The inhibit function has also been expanded to initiate operation in stand-by mode in which the power supply delivers a small fraction of the steady-state output power. 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, these devices and their fixed- frequency counterparts represent a significant advance in off-line SMPS reliability growth and integration. Similar devices, with an output voltage rating of 850 V and output power ratings to 220 W, are available as the STR-S6707 thru STR-S6709. FEATURES I Quasi-Resonant Operation for Low EMI and High Efficiency I Output Power to 140 W I Low-Power Output Standby Mode I Pulse-by-Pulse Over-Current Protection I Latched Over-Voltage and Thermal Protection I Third-Generation Switching Transistor with Proportional Drive I Maximum ON Time and OFF Time Set During Manufacture I Internal Under-Voltage Lockout with Hysteresis I Over-Molded SIP with Integral Isolated Heat Spreader Always order by complete part number: Max. Cont. Peak Part Number Current, I C Current, I CM STR-S6703 6 A 12 A STR-S6704 5 A 10 A ABSOLUTE MAXIMUM RATINGS Supply Voltage, VIN ........................... 15 V Output Voltage, VCEX ....................... 500 V VEBO ................................................ 7 V Continuous Output Current, IC .......................................... See Table 1 ms Single-Pulse Output Current, ICM ........................................ See Table Sink Current, IS................................. 1.5 A Drive Current, ID .......................... -700 mA Feedback Current, IFDBK ................. 20 mA Inhibit Voltage, VINH ........................... 15 V Over-Current Protection Voltage Range, VOCP ............................................ ±3.5 V Insulation Voltage,VWM(RMS) ........... 2000 V Package Power Diss., PD ........ See Graph Output Junction Temperature, TJ .. +150 °C Internal Frame Temperature, TF ... +125 °C Operating Temperature Range, TA ............................... -20 °C to +125°C Storage Temperature Range, Tstg ............................. -40 °C to +125°C ™ STR-S6703 AND STR-S6704 |
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