Analog Devices LT8316

Description

The LT®8316 is a micropower, high voltage flyback con-troller. No opto-isolator is needed for regulation. The device samples the output voltage from the isolated fly-back waveform appearing across a third winding on the transformer. Quasi-resonant boundary mode operation improves load regulation, reduces transformer size, and maintains high efficiency.At start-up, the LT8316 charges its INTVCC capacitor viaa high voltage current source. During normal operation,the current source turns off and the device draws itspower from a third winding on the transformer minimizingstandby power dissipation.The LT8316 operates from a wide range of input supplyvoltages and can deliver up to 100W of power. It is availablein a thermally enhanced 20-pin TSSOP package withfour pins removed for high-voltage spacing.

Features

• Wide Input Voltage Range: 16V to 600V
• No Opto-Isolator Required for Regulation
• Quasi-Resonant Boundary Mode Operation
• Constant-Current and Constant-Voltage Regulation
• Low-Ripple Light Load Burst Mode® Operation
• Low Quiescent Current: 75μA
• Programmable Current Limit and Soft-Start
• TSSOP Package with High-Voltage Spacing

Typical applications

• Electric Vehicles and Battery Stacks
• Isolated Telecom, Automotive, Industrial, Medical Power Supplies / Isolated Off-Line Housekeeping Power Supplies / Multioutput Isolated Power Supplies for Inverter Gate Drives

More information

• Datasheet
• IC product information