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NXP TEA1721BT | Demoboard ENLIGHT 7W LED
HV start-up flyback controller with integrated MOSFET for 5 W applications, 905 Hz burst frequency
Overview
| Topology | Flyback Converter |
| Input voltage | 207-253 V |
| Switching frequency | 22.5-50.5 kHz |
| Output 1 | 5 V / 0.3 A |
| IC revision | 1 |
Features
- Low power SMPS controller with integrated power switch designed for applications up
- to 5 W700 V high voltage power switch for global mains operationPrimary sensing for control of the output voltage without optocoupler and secondary
- feedback circuitryMinimizes audible noise in all operation modesUSB battery charging and Energy Star 2.0 compliantJitter function for reduced EMIEnables no-load power consumption < 20 mWVery low supply current in no-load condition with energy saver modeIncorporates a high voltage start-up circuit with zero current consumption under
- normal switching operationAvailable in halogen-free and Restriction of Hazardous Substances (RoHS) SO7
- packageOverVoltage Protection (OVP) on Feedback control (FB) pin with auto-restartUnderVoltage LockOut (UVLO) protection on IC supply pinOverTemperature Protection (OTP)Soft-start by reduced peak current for zero and low output voltageDemagnetization protection for guaranteed discontinuous conduction mode operationOpen and short-circuit protection of the Feedback control (FB) pinShort-circuit protection of the charger output
Typical applications
- Standby supply for TV and desktop PC
- Power supply for white goods applications
- Battery chargers for cellular phones and other low power adapters up to 5 W