Allegro MicroSystems STR-A6251
The STR-A6251 and STR-A6252 are 50 kHz PWM topology (with ±5% frequency jittering for minimum EMI) regulators specifically designed to satisfy the requirements for increased integration and reliability in flyback converters. They incorporate a primary control and drive circuit with avalanche-rated power MOSFETs. The STR-A6252 features higher allowable switching current and lower on-resistance.| Part No. | STR-A6251 |
|---|---|
| Datasheet | STR-A6251 Download |
| Manufacturer |  Allegro MicroSystems |
| Description | Flyback Switching Regulators |
| Buy | Stock & Price |
FEATURES AND BENEFITS
● 50 kHz PWM with ±5% Frequency Jittering Cost Reduction of EMI Noise Filtering● Rugged 650 V Avalanche-Rated MOSFET Simplified Surge Absorption No VDSS Derating Required
● Choice of rDS(on) (2.8 Ω or 3.95 Ω maximum)
● Auto-Burst Mode for Stand-By Operation or Light Loads Less Transformer Audible Noise
● Built-In Leading Edge Blanking
● Soft Start and Low Start-Up Current Start-Up Circuit Disabled in Operation
● Low Operating Current (4 mA max) continued Always order by complete part number, e.g., STR-A6251 . Data Sheet 28103.42b
ABSOLUTE MAXIMUM RATINGS
at TA = +25°C Control Supply Voltage, VCC . . . . 36 V Drain-Source Voltage, VDSS . . . . . . 650 V Drain Switching Current, ID STR-A6251 . . . . . . . . . . . . . . 2.5 A* STR-A6252 . . . . . . . . . . . . . . 3.0 A* Peak Drain Switching Current, IDM STR-A6251 . . . . . . . . . . . . . . . 2.5 A STR-A6252 . . . . . . . . . . . . . . . 3.0 A Single-Pulse Avalanche Energy, EAS STR-A6251 . . . . . . . . . . . . . . 72 mJ STR-A6252 . . . . . . . . . . . . .
