• Push-Pull Driver for Small Transformers

• Single 3.3 V or 5 V Supply

• High Primary-side Current Drive:

– 5 V Supply: 350 mA (max)

– 3.3 V Supply: 150 mA (max)

• Low Ripple on Rectified Output Permits Small Output Capacitors

• Small 5-pin SOT23 Package

• Isolated Interface Power Supply for CAN, RS-

485, RS-422, RS-232, SPI, I2C, Low-Power LAN

• Industrial Automation

• Process Control

• Medical Equipment

The SN6501 is a monolithic oscillator/power-driver, specifically designed for small form factor, isolated power supplies in isolated interface applications. It drives a low-profile, center-tapped transformer primary from a 3.3 V  or 5 V DC power supply. The secondary can be wound to provide any isolated voltage based on transformer  turns ratio.

The SN6501 consists of an oscillator followed by a gate drive circuit that provides the complementary output signals to drive the ground referenced N-channel power switches. The internal logic ensures break-before-make action between the two switches.

The SN6501 is available in a small SOT23-5 package, and is specified for operation at temperatures from –40°C to 125°C.

http://www.1-core.com/