DESCRIPTION
The LT®3750A is a flyback converter designed to rapidly charge large capacitors to a user-adjustable target voltage. A patented boundary mode control scheme* minimizes transition losses and reduces transformer size. The transformer turns ratio and two external resistors easily adjust the output voltage.* A low 78mV current sense accurately limits peak switch current and also helps to maximize efficiency. With a wide input voltage range, the LT3750A can operate from a variety of power sources. A typical application can charge a 100µF capacitor to 300V in less than 300ms.

FEATURES
◾ Charges Any Size Capacitor
◾ Easily Adjustable Output Voltage
◾ Drives High Current NMOS FETs
◾ Primary-Side Sense—No Output Voltage Divider
   Necessary
◾ Wide Input Range: 3V to 24V
◾ Drives Gate to VCC – 2V
◾ Available in 10-Lead MS Package

APPLICATIONS
◾ Emergency Warning Beacons
◾ Professional Photoflash Systems
◾ Security/Inventory Control Systems
◾ High Voltage Power Supply
◾ Electric Fences
◾ Detonators