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LinkSwitch-3

Energy-Efficient, Accurate Primary-Side Regulation CV/CC Switcher for Adapters and Chargers

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Product
Data Sheet
RDK Available
Output Power (Max) - Open Frame, Univ
Output Power (Max) - Enclosed, Univ
Breakdown Voltage
IC Package
Cable Drop Compensation
Topology
Control Scheme
Output Profile
Switching Frequency (max)
Protection Features
Mounting Type
Product Type
Voltage - Input (Max)
Voltage - Input (Min)
Temperature - Operating (Max)
Temperature - Operating (Min)
Internal Switch
Over-Temperature Response
Control Features
Switching Frequency (min)
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 4.1 W
Output Power (Max) - Enclosed, Univ 3.5 W
Breakdown Voltage 725 V
IC Package SO-8C
Cable Drop Compensation 1.02
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 5.1 W
Output Power (Max) - Enclosed, Univ 4.5 W
Breakdown Voltage 725 V
IC Package SO-8C
Cable Drop Compensation 1.02
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 6.1 W
Output Power (Max) - Enclosed, Univ 5.5 W
Breakdown Voltage 725 V
IC Package SO-8C
Cable Drop Compensation 1.02
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 7.5 W
Output Power (Max) - Enclosed, Univ 7.5 W
Breakdown Voltage 725 V
IC Package SO-8C
Cable Drop Compensation 1.02
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 9.0 W
Output Power (Max) - Enclosed, Univ 8.5 W
Breakdown Voltage 725 V
IC Package eSOP-12B
Cable Drop Compensation 1.02
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 10.0 W
Output Power (Max) - Enclosed, Univ 10.0 W
Breakdown Voltage 725 V
IC Package eSIP-7C
Cable Drop Compensation 1.02
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Through Hole
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 10.0 W
Output Power (Max) - Enclosed, Univ 10.0 W
Breakdown Voltage 725 V
IC Package eSOP-12B
Cable Drop Compensation 1.02
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 5.1 W
Output Power (Max) - Enclosed, Univ 4.5 W
Breakdown Voltage 725 V
IC Package SO-8C
Cable Drop Compensation 1.04
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 6.1 W
Output Power (Max) - Enclosed, Univ 5.5 W
Breakdown Voltage 725 V
IC Package SO-8C
Cable Drop Compensation 1.04
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 7.5 W
Output Power (Max) - Enclosed, Univ 7.5 W
Breakdown Voltage 725 V
IC Package SO-8C
Cable Drop Compensation 1.04
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 9.0 W
Output Power (Max) - Enclosed, Univ 8.5 W
Breakdown Voltage 725 V
IC Package eSOP-12B
Cable Drop Compensation 1.04
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 10.0 W
Output Power (Max) - Enclosed, Univ 10.0 W
Breakdown Voltage 725 V
IC Package eSIP-7C
Cable Drop Compensation 1.04
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Through Hole
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 10.0 W
Output Power (Max) - Enclosed, Univ 10.0 W
Breakdown Voltage 725 V
IC Package eSOP-12B
Cable Drop Compensation 1.04
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 4.1 W
Output Power (Max) - Enclosed, Univ 3.5 W
Breakdown Voltage 725 V
IC Package SO-8C
Cable Drop Compensation 1.06
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 5.1 W
Output Power (Max) - Enclosed, Univ 4.5 W
Breakdown Voltage 725 V
IC Package SO-8C
Cable Drop Compensation 1.06
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 6.1 W
Output Power (Max) - Enclosed, Univ 5.5 W
Breakdown Voltage 725 V
IC Package SO-8C
Cable Drop Compensation 1.06
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 7.5 W
Output Power (Max) - Enclosed, Univ 7.5 W
Breakdown Voltage 725 V
IC Package SO-8C
Cable Drop Compensation 1.06
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 9.0 W
Output Power (Max) - Enclosed, Univ 8.5 W
Breakdown Voltage 725 V
IC Package eSOP-12B
Cable Drop Compensation 1.06
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 10.0 W
Output Power (Max) - Enclosed, Univ 10.0 W
Breakdown Voltage 725 V
IC Package eSIP-7C
Cable Drop Compensation 1.06
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Through Hole
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 10.0 W
Output Power (Max) - Enclosed, Univ 10.0 W
Breakdown Voltage 725 V
IC Package eSOP-12B
Cable Drop Compensation 1.06
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 6.1 W
Output Power (Max) - Enclosed, Univ 5.5 W
Breakdown Voltage 725 V
IC Package SO-8C
Cable Drop Compensation 1.08
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 6.1 W
Output Power (Max) - Enclosed, Univ 5.5 W
Breakdown Voltage 725 V
IC Package SO-8C
Cable Drop Compensation 1.01
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 10.0 W
Output Power (Max) - Enclosed, Univ 10.0 W
Breakdown Voltage 725 V
IC Package eSIP-7C
Cable Drop Compensation 1.01
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Through Hole
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz
Data Sheet View PDF
RDK Available
Output Power (Max) - Open Frame, Univ 10.0 W
Output Power (Max) - Enclosed, Univ 10.0 W
Breakdown Voltage 725 V
IC Package eSOP-12B
Cable Drop Compensation 1.01
Topology Flyback
Control Scheme Primary-side
Output Profile CV/CC
Switching Frequency (max) 85 kHz
Protection Features Output Open Loop, Output Short Circuit, Overtemperature
Mounting Type Surface Mount
Product Type IC
Voltage - Input (Max) 264 V
Voltage - Input (Min) 90 V
Temperature - Operating (Max) 150 °C
Temperature - Operating (Min) -40 °C
Internal Switch Yes
Over-Temperature Response Hysteretic
Control Features Cable Drop Compensation, Selectable Current Limit, Frequency Jittering, Programmable Switching Frequency, Auto-Restart/Latching Fault Response, On/Off Control
Switching Frequency (min) 60 kHz

The LinkSwitch-3 family of ICs dramatically simplifies low power CV/CC charger designs by eliminating an optocoupler and secondary control circuitry. The device introduces a revolutionary control technique to provide very accurate output voltage and current regulation, compensating for transformer and internal parameter tolerances along with input voltage variations.

The device incorporates a 725 V power MOSFET, a novel ON/OFF control state machine, a high-voltage switched current source for self biasing, frequency jittering, cycle-by-cycle current limit and hysteretic thermal shutdown circuitry onto a monolithic IC.

Product Highlights

Dramatically Simplifies CV/CC Converters

  • Eliminates optocoupler and all secondary CV/CC control circuitry
  • Eliminates all control loop compensation circuitry

Advanced Performance Features

  • Compensates for transformer inductance tolerances, input line voltage variations, and cable voltage drop
  • Very tight IC parameter tolerances using proprietary trimming technology
  • Frequency jittering greatly reduces EMI filter cost
  • Programmable switching frequency up to 85 kHz to reduce transformer size
  • Minimum operation frequency fixed to improve transient load response

Advanced Protection/Safety Features

  • Hysteretic thermal shutdown – automatic recovery reduces power supply returns from the field
  • Meets high-voltage creepage requirements between DRAIN and all other pins both on the PCB and at the package

EcoSmart– Energy Efficient

  • Easily meets all global energy efficiency regulations with no added components
  • No-load consumption at 230 VAC input with bias winding <30 mW

Green Package

  • Halogen free and RoHS compliant package