Features
• 3750Vrms Input-to-Output Isolation
• Drives External Power MOSFET
• Low LED Current (2.5mA)
• Requires No External Power Supply
• Load Voltages up to 200V
• High Reliability
• Small 8-pin Surface Mount Flatpack Package
• Tape and Reel Version Available

Applications
• Industrial Controls
• Instrumentation
• Medical Equipment Isolation
• Electronic Switching
• I/O Subsystems
• Appliances

Description
The CPC1590 is a MOSFET Gate Driver that requires
no external power supply: it regulates the input voltage
drawn from the load (up to 200V), down to 12.2V for
internal use. It is specifically designed for low duty
cycle switching applications that drive up to 4nF of
gate capacitance.
The CPC1590 accomplishes very fast MOSFET
turn-on by supplying stored charge, from an external
capacitor, to the MOSFET gate when input control
current is applied to the device’s LED. After the
MOSFET is turned on, photocurrent from the input
optocoupler keeps it on for as long as sufficient input
control current flows, so there is no low-frequency
operating limit. When the MOSFET is turned off, the
storage capacitor charges from the device’s regulated
internal voltage in preparation for the next turn-on.
Because it is provided in a small, 8-pin Flatpack
package and requires no separate power supply, the
CPC1590 provides a flexible design solution that
consumes the least amount of PCB land area.