TNY177PN Datasheet – DIP 7 Pin, Offline Switcher – Power
Energy Efficient, Offline Switcher with Enhanced Flexibility and Extended Power Range
TNY177PN overview
TinySwitch-LTincorporates a high voltage power MOSFET switch with a power supply controller in one device. Unlike conventional PWM (pulse width modulator) controllers, it uses a simple ON/OFF control to regulate the output voltage. The controller consists of an oscillator, enable circuit (sense and logic), current limit state machine, 5.85 V regulator, BYPASS/MULTI-FUNCTION pin undervoltage, overvoltage circuit, and current limit selection circuitry, over- temperature protection, current limit circuit, leading edge blanking, and a 700 V power MOSFET. TinySwitch-LTincorporates additional circuitry for auto-restart, adaptive switching cycle on-time extension, and frequency jitter. Figure 2 shows the functional block diagram with the most important features.
| Part Number | TNY177PN |
| Function | Energy Efficient, Offline Switcher with Enhanced Flexibility and Extended Power Range |
| Package | |
| Manufacturer | Power Integrations |
| Datasheet | Download PDF  |
Datasheet
TNY177PN features
- Accurate hysteretic thermal shutdown protection with automatic recovery eliminates need for manual reset
- Auto-restart delivers <3% of maximum power in short-circuit and open loop fault conditions
- Output overvoltage shutdown with optional Zener
- Very low component count enhances reliability and enables single-sided printed circuit board layout
- High bandwidth provides fast turn on with no overshoot and excellent transient load response
- Extended creepage between DRAIN and all other pins improves field reliability
TNY177PN pinout
Absolute maximum ratings
| Parameter | Value |
|---|---|
| DRAIN Peak Current: TNY174 TNY175 TNY176 TNY177 TNY178 TNY179 TNY180 | 400 (750) mA(2) 560 (1050) mA(2) 720 (1350) mA(2) 880 (1650) mA(2) 1040 (1950) mA(2) 1200 (2250) mA(2) 1360 (2550) mA(2) |
| ENABLE Current | 100 mA |
| Storage Temperature | -65 °C to 150 °C |
| Operating Junction Temperature (3) | -40 °C to 150 °C |
| Lead Temperature (4) | 260 °C |
TNY177PN applications
- Chargers/adapters for cell/cordless phones, PDAs, digital cameras, MP3/portable audio, shavers, etc.
- DVD/PVR and other low power set top decoders
- Supplies for appliances, industrial systems, metering, etc.
More about TNY177PN
TNY177PN Absolute Maximum Ratings
| DRAIN Voltage | V to 650 V |
| ENABLE Voltage | V to 9 V |
| BP/M Voltage | V to 9 V |
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