SN6501-Q1

The SN6501-Q1 from Texas Instruments is a monolithic oscillator and power driver specifically engineered for creating small form-factor, isolated power supplies. This device is ideal for interface applications requiring isolation.

It drives a low-profile, center-tapped transformer primary using a single 3.3-V or 5-V DC power supply. The secondary winding can be configured to provide any desired isolated voltage based on the transformer's turns ratio. The SN6501-Q1 features high primary-side current drive capabilities, delivering up to 350 mA at a 5-V supply and 150 mA at a 3.3-V supply. Its switching frequency ranges from 300 kHz to 620 kHz, enabling the use of small output capacitors due to low ripple on the rectified output.

Designed for demanding environments, the SN6501-Q1 is qualified for automotive applications, meeting AEC-Q100 standards with a temperature grade of 1 (-40°C to 125°C ambient operating temperature). It is housed in a compact, 5-pin SOT-23 package, making it suitable for space-constrained designs.

Key electrical specifications include an input voltage range of 3 V to 5.5 V, a typical output current of 0.35 A, and a maximum output voltage of 11 V. The device also includes a switch current limit of 0.5 A typical.