Features • Full-wave Current Sensing • Mains Supply Variation Compensated • Programmable Load-current Limitation with Over- and High-load Output • Variable Soft Start • Voltage and Current Synchronization • Automatic Retriggering Switchable • Triggering Pulse Typically 125mA • Internal Supply-voltage Monitoring • Current Requirement ≤ 3mAPhase-control • Temperature-compensated Reference VoltageIC with CurrentApplicationsFeedback and • Advanced Motor Control • OverloadGrinder • Drilling MachineProtection1.Description The U2010B is designed as a phase-control circuit in bipolar technology for motor Atmel U2010B control applications with load-current feedback and overload protection. It enables load-current detection and has a soft-start function as well as reference voltage output. Figure 1-1. Block Diagram 15 14 13 12 11 Overload Limiting Voltage Mains voltage Supply 10 detector detector compensation voltage High load GND Automatic A 100% 70% retriggering αmax Output B 9 Phase Programmable Auto- Current control unit overload start - 1 2 + detector protection ϕ = f(V4) Full wave C I rectifier max 16 Voltage Atmel monitoring U2010B 1 Load current Level Soft Reference detector shift start voltage 2 3 4 5 6 7 8 4766D–INDCO–03/11 Document Outline Features Applications 1. Description 2. Pin Configuration 3. General Description 3.1 Mains Supply 3.2 Voltage Monitoring 3.3 Phase Control 3.4 Automatic Retriggering 3.5 Current Synchronization 3.6 Voltage Synchronization with Mains Voltage Compensation 3.7 Load-current Compensation 3.8 Load-current Limitation 3.8.1 Mode Selection 4. Absolute Maximum Ratings 5. Thermal Resistance 6. Electrical Characteristics 7. Diagrams 8. Ordering Information 9. Package Information 10. Revision History
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