SN6501DBVT Power Path Management IC PMIC Transformer Driver for Iso Power Supply

1 Features

• 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 SOT-23 Package

   

2 Applications

• Isolated interface power supply for CAN, RS-485, RS-422, RS-232, SPI, I2C, Low-Power LAN

• Industrial automation

• Process control

• Medical equipment

   

3 Description

The SN6501 is a monolithic oscillator/power-driver, specifically designed for small form factor, isolated power supplies in isolated interface applications. The device 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 SOT-23 (5) package, and is specified for operation at temperatures from –40°C to 125°C.

Device Information