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Energy-Efficient Off-Line Switcher with Enhanced Flexibility and Extended Power Range


Product Details

TinySwitch-LT incorporates a 650 V power MOSFET, oscillator, high-voltage switched current source, current limit (user selectable) and thermal shutdown circuitry. The IC family uses an ON/OFF control scheme and offers a design flexible solution with a low system cost and extended power capability.

Product Highlights:

  • 650 V rated integrated MOSFET
  • Simple ON/OFF control, no loop compensation needed
  • Selectable current limit through BP/M capacitor value
  • Higher current limit extends peak power or, in open frame applications, maximum continuous power
  • Tight I2f parameter tolerance reduces system cost; minimizes maximum overload power, reducing cost of transformer, primary clamp & secondary components
  • On-time extension—extends low line regulation range/hold-up time to reduce input bulk capacitance
  • Frequency jittering reduces EMI filter costs


Output Power (Max) - Open Frame, 230V 36.50 W
Output Power (Max) - Enclosed, 230V 20.00 W
Output Power (Max) - Enclosed, Univ 14.00 W
Output Power (Max) - Open Frame, Univ 28.50 W
Breakdown Voltage 650 V
Voltage - Input (Min) 85 V
Voltage - Input (Max) 265 V
Auto-Restart & Overvoltage Response Latch Off
IC Package DIP-8C
Internal Switch Yes
Over-Temperature Response Hysteretic
Temperature - Operating (Min) -40 °C
Temperature - Operating (Max) 150 °C
Control Scheme Secondary-side
Control Features
Selectable Current Limit
Frequency Jittering
Auto-Restart/Latching Fault Response
On/Off Control
Protection Features
Output Overvoltage
Output Short Circuit
Output Open Loop
Output Overload
Topology Flyback
Product Sub-Type PMIC
Secondary Response Auto-restart