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BUY TNY277GN https://www.utsource.net/itm/p/5230293.html
The TNY277GN is an energy-efficient offline Switcher incorporates a 700V power MOSFET, oscillator, high voltage switched current source, current limit and thermal shutdown circuitry. It uses an ON/OFF control scheme and offers a design flexible solution with a low system cost and extended power capability. TinySwitch-III combines a high voltage power MOSFET switch with a power supply controller in one device. Unlike conventional PWM controllers, it uses a simple ON/OFF control to regulate the output voltage. The controller consists of an oscillator and enables circuit, current limit state machine, 5.85V regulator, BYPASS/MULTI-FUNCTION pin undervoltage, overvoltage circuit and current limit selection circuitry, over-temperature protection, current limit circuit, leading edge blanking. TinySwitch-III incorporates additional circuitry for line undervoltage sense, auto-restart, adaptive switching cycle on-time extension and frequency jitter.
TNY277GN is a 7-pin SOP (Small Outline Package) integrated circuit manufactured by Power Integrations. Features: rn Low start-up current rn Low operating current rn High efficiency rn Low standby power rn Over-temperature protection rn Over-voltage protection rn Under-voltage protection rn Over-current protection rn Short-circuit protection rn Soft-start rn Frequency jittering rn Frequency foldback rn Low EMI rn Low cost Applications: rn AC/DC adapters rn Battery chargers rn LED drivers rn Motor control rn Power supplies rn Solar inverters rn Uninterruptible power supplies (UPS) (For reference only)