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TinySwitch-III

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

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Product Parts Table
Product
Data Sheet
Output Power (Max) - Enclosed, 230V
Output Power (Max) - Open Frame, 230V
IC Package
Breakdown Voltage
Protection Features
Output Power (Max) - Enclosed, Univ
Output Power (Max) - Open Frame, Univ
Over-Temperature Response
Auto-Restart & Overvoltage Response
Mounting Type
Product Type
Voltage - Input (Max)
Voltage - Input (Min)
Temperature - Operating (Max)
Temperature - Operating (Min)
Control Scheme
Internal Switch
Control Features
Topology
Secondary Response
Data Sheet View PDF
Output Power (Max) - Enclosed, 230V 6.0 W
Output Power (Max) - Open Frame, 230V 11.0 W
IC Package SMD-8C
Breakdown Voltage 700 V
Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature
Output Power (Max) - Enclosed, Univ 5.0 W
Output Power (Max) - Open Frame, Univ 8.5 W
Over-Temperature Response Hysteretic
Auto-Restart & Overvoltage Response Latch Off
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 265 V
Voltage - Input (Min) 85 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Control Scheme Secondary-side
Internal Switch Yes
Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control
Topology Flyback
Secondary Response Auto-restart
Data Sheet View PDF
Output Power (Max) - Enclosed, 230V 6.0 W
Output Power (Max) - Open Frame, 230V 11.0 W
IC Package SMD-8C
Breakdown Voltage 700 V
Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature
Output Power (Max) - Enclosed, Univ 5.0 W
Output Power (Max) - Open Frame, Univ 8.5 W
Over-Temperature Response Hysteretic
Auto-Restart & Overvoltage Response Latch Off
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 265 V
Voltage - Input (Min) 85 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Control Scheme Secondary-side
Internal Switch Yes
Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control
Topology Flyback
Secondary Response Auto-restart
Data Sheet View PDF
Output Power (Max) - Enclosed, 230V 8.5 W
Output Power (Max) - Open Frame, 230V 15.0 W
IC Package SMD-8C
Breakdown Voltage 700 V
Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature
Output Power (Max) - Enclosed, Univ 6.0 W
Output Power (Max) - Open Frame, Univ 11.5 W
Over-Temperature Response Hysteretic
Auto-Restart & Overvoltage Response Latch Off
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 265 V
Voltage - Input (Min) 85 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Control Scheme Secondary-side
Internal Switch Yes
Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control
Topology Flyback
Secondary Response Auto-restart
Data Sheet View PDF
Output Power (Max) - Enclosed, 230V 8.5 W
Output Power (Max) - Open Frame, 230V 15.0 W
IC Package DIP-8C
Breakdown Voltage 700 V
Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature
Output Power (Max) - Enclosed, Univ 6.0 W
Output Power (Max) - Open Frame, Univ 11.5 W
Over-Temperature Response Hysteretic
Auto-Restart & Overvoltage Response Latch Off
Mounting Type Through Hole
Product Type IC
Voltage - Input (Max) 265 V
Voltage - Input (Min) 85 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Control Scheme Secondary-side
Internal Switch Yes
Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control
Topology Flyback
Secondary Response Auto-restart
Data Sheet View PDF
Output Power (Max) - Enclosed, 230V 10.0 W
Output Power (Max) - Open Frame, 230V 19.0 W
IC Package SMD-8C
Breakdown Voltage 700 V
Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature
Output Power (Max) - Enclosed, Univ 7.0 W
Output Power (Max) - Open Frame, Univ 15.0 W
Over-Temperature Response Hysteretic
Auto-Restart & Overvoltage Response Latch Off
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 265 V
Voltage - Input (Min) 85 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Control Scheme Secondary-side
Internal Switch Yes
Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control
Topology Flyback
Secondary Response Auto-restart
Data Sheet View PDF
Output Power (Max) - Enclosed, 230V 10.0 W
Output Power (Max) - Open Frame, 230V 19.0 W
IC Package DIP-8C
Breakdown Voltage 700 V
Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature
Output Power (Max) - Enclosed, Univ 7.0 W
Output Power (Max) - Open Frame, Univ 15.0 W
Over-Temperature Response Hysteretic
Auto-Restart & Overvoltage Response Latch Off
Mounting Type Through Hole
Product Type IC
Voltage - Input (Max) 265 V
Voltage - Input (Min) 85 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Control Scheme Secondary-side
Internal Switch Yes
Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control
Topology Flyback
Secondary Response Auto-restart
Data Sheet View PDF
Output Power (Max) - Enclosed, 230V 13.0 W
Output Power (Max) - Open Frame, 230V 23.5 W
IC Package SMD-8C
Breakdown Voltage 700 V
Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature
Output Power (Max) - Enclosed, Univ 8.0 W
Output Power (Max) - Open Frame, Univ 18.0 W
Over-Temperature Response Hysteretic
Auto-Restart & Overvoltage Response Latch Off
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 265 V
Voltage - Input (Min) 85 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Control Scheme Secondary-side
Internal Switch Yes
Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control
Topology Flyback
Secondary Response Auto-restart
Data Sheet View PDF
Output Power (Max) - Enclosed, 230V 13.0 W
Output Power (Max) - Open Frame, 230V 23.5 W
IC Package DIP-8C
Breakdown Voltage 700 V
Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature
Output Power (Max) - Enclosed, Univ 8.0 W
Output Power (Max) - Open Frame, Univ 18.0 W
Over-Temperature Response Hysteretic
Auto-Restart & Overvoltage Response Latch Off
Mounting Type Through Hole
Product Type IC
Voltage - Input (Max) 265 V
Voltage - Input (Min) 85 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Control Scheme Secondary-side
Internal Switch Yes
Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control
Topology Flyback
Secondary Response Auto-restart
Data Sheet View PDF
Output Power (Max) - Enclosed, 230V 16.0 W
Output Power (Max) - Open Frame, 230V 28.0 W
IC Package SMD-8C
Breakdown Voltage 700 V
Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature
Output Power (Max) - Enclosed, Univ 10.0 W
Output Power (Max) - Open Frame, Univ 21.5 W
Over-Temperature Response Hysteretic
Auto-Restart & Overvoltage Response Latch Off
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 265 V
Voltage - Input (Min) 85 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Control Scheme Secondary-side
Internal Switch Yes
Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control
Topology Flyback
Secondary Response Auto-restart
Data Sheet View PDF
Output Power (Max) - Enclosed, 230V 16.0 W
Output Power (Max) - Open Frame, 230V 28.0 W
IC Package DIP-8C
Breakdown Voltage 700 V
Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature
Output Power (Max) - Enclosed, Univ 10.0 W
Output Power (Max) - Open Frame, Univ 21.5 W
Over-Temperature Response Hysteretic
Auto-Restart & Overvoltage Response Latch Off
Mounting Type Through Hole
Product Type IC
Voltage - Input (Max) 265 V
Voltage - Input (Min) 85 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Control Scheme Secondary-side
Internal Switch Yes
Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control
Topology Flyback
Secondary Response Auto-restart
Data Sheet View PDF
Output Power (Max) - Enclosed, 230V 18.0 W
Output Power (Max) - Open Frame, 230V 32.0 W
IC Package SMD-8C
Breakdown Voltage 700 V
Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature
Output Power (Max) - Enclosed, Univ 12.0 W
Output Power (Max) - Open Frame, Univ 25.0 W
Over-Temperature Response Hysteretic
Auto-Restart & Overvoltage Response Latch Off
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 265 V
Voltage - Input (Min) 85 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Control Scheme Secondary-side
Internal Switch Yes
Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control
Topology Flyback
Secondary Response Auto-restart
Data Sheet View PDF
Output Power (Max) - Enclosed, 230V 18.0 W
Output Power (Max) - Open Frame, 230V 32.0 W
IC Package DIP-8C
Breakdown Voltage 700 V
Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature
Output Power (Max) - Enclosed, Univ 12.0 W
Output Power (Max) - Open Frame, Univ 25.0 W
Over-Temperature Response Hysteretic
Auto-Restart & Overvoltage Response Latch Off
Mounting Type Through Hole
Product Type IC
Voltage - Input (Max) 265 V
Voltage - Input (Min) 85 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Control Scheme Secondary-side
Internal Switch Yes
Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control
Topology Flyback
Secondary Response Auto-restart
Data Sheet View PDF
Output Power (Max) - Enclosed, 230V 20.0 W
Output Power (Max) - Open Frame, 230V 36.5 W
IC Package SMD-8C
Breakdown Voltage 700 V
Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature
Output Power (Max) - Enclosed, Univ 14.0 W
Output Power (Max) - Open Frame, Univ 28.5 W
Over-Temperature Response Hysteretic
Auto-Restart & Overvoltage Response Latch Off
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 265 V
Voltage - Input (Min) 85 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Control Scheme Secondary-side
Internal Switch Yes
Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control
Topology Flyback
Secondary Response Auto-restart
Data Sheet View PDF
Output Power (Max) - Enclosed, 230V 20.0 W
Output Power (Max) - Open Frame, 230V 36.5 W
IC Package DIP-8C
Breakdown Voltage 700 V
Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature
Output Power (Max) - Enclosed, Univ 14.0 W
Output Power (Max) - Open Frame, Univ 28.5 W
Over-Temperature Response Hysteretic
Auto-Restart & Overvoltage Response Latch Off
Mounting Type Through Hole
Product Type IC
Voltage - Input (Max) 265 V
Voltage - Input (Min) 85 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Control Scheme Secondary-side
Internal Switch Yes
Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control
Topology Flyback
Secondary Response Auto-restart

TinySwitch-III incorporates a 700 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:

  • 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

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