IC manufacturers Texas Instruments

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Texas Instruments SN6505-Q1

Automotive low-noise, 350-mA, 410-kHz transformer driver for isolated power supplies

Overview

TopologyPush-Pull Converter symmetrical isolated
Input voltage5 V
Switching frequency300-620 kHz
Output 13.3 V / 1.5 A
IC revisionC

Description

The SN6501-Q1 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-Q1 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-Q1 is available in a small SOT-23 (5) package, and is specified for operation at temperatures from –40°C to 125°C.

Features

Qualified for Automotive ApplicationsAEC-Q100 Qualified With the Following ResultsDevice Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature RangeDevice HBM ESD Classification Level H2Device CDM ESD Classification Level C4BFunctional Safety-CapableDocumentation available to aid functional safety system designPush-Pull Driver for Small TransformersSingle 3.3-V or 5-V SupplyHigh 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 CapacitorsSmall 5-Pin SOT-23 Package

Typical applications

  • Industrial Automation
  • Process Control
  • Isolated Interface Power Supply for CAN, RS-485, RS-422, RS-232, SPI, I2C, Low-Power LAN
  • Medical Equipment

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