STR-A6251M ALLEGRO [Allegro MicroSystems], STR-A6251M Datasheet
STR-A6251M
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STR-A6251M Summary of contents
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... STR-A6251M Universal-Input/ kHz Flyback Switching Regulator The STR-A6251M kHz PWM topology (with ±5% fre- quency jittering for minimum EMI) regulator specifically designed to satisfy the requirements for increased integration and reliability in flyback converters. It incorporates a primary control and drive circuit with an avalanche-rated power MOSFET ...
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... STR-A6251M Universal-Input/ kHz Flyback Switching Regulator 2 FUNCTIONAL BLOCK DIAGRAM FEATURES Auto-Bias Function Stable Burst Operation Without Generating Interference Internal Off-Timer Circuit Built-In Constant-Voltage/Constant Current Multiple Protections: Pulse-by-Pulse Overcurrent Protection (OCP) Overload Protection (OLP) with Auto Restart Latching Overvoltage Protection (OVP) ...
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... OLP FB(MAX SET(CC RES(CC startup 35 CC(OVP =35.2 CC CC( =35 θ JF STR-A6251M Universal-Input/13 W Ratings Min Typ Max 650 - - - - 300 - - 3. 250 12.9 14 4.0 6 4.0 4.5 5.0 3.2 3.6 4.0 -7.7 -11.0 -15.4 7.7 11.0 15.4 ...
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... STR-A6251M Universal-Input/ kHz Flyback Switching Regulator Avalanche energy is measured mH 2 MOSFET TYPICAL CHARACTERISTICS Recommended Operating Conditions Operating Ambient Temperature ....... -20°C to +100°C Operating Junction Temperature ....... -20°C to +125°C Maximum Frame Temperature ........................ +115°C For the availability of parts meeting -40°C requirements, contact Allegro’ ...
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... Precautions must be taken to prevent accidental contact with power-line potentials. Do not connect grounded test equipment. The use of an isolation transformer is recommended during circuit development and breadboarding. www.allegromicro.com Universal-Input/ kHz Flyback Switching Regulator STR-A6251M 5 ...
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... STR-A6251M Universal-Input/ kHz Flyback Switching Regulator Typical Application NOTE: The start-up performance of the IC can only be guaranteed for values of C2 greater than 22 µF. This value is required to keep the internal supply voltage within regulation during IC initialization. The products described herein are manufactured in Japan by Sanken Electric Co ...
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... Dimensions in Inches Dimensions in Millimeters (controlling dimensions) Terminal Finish: Pure Sn, 2 Product Weight: Approx. 0.51 g. Frame temperature For more efficient heat radiation, connect a broad PCB pattern at pins 7 and 8. STR-A6251M Universal-Input/13 W (for reference only) nd level interconnect category (e3 measured at the root of pin 3. EI 26EI 7 ...