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SN6501-Q1

ACTIVE

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

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Data sheet

SN6501-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Vin (max) (V) 5.5 Vin (min) (V) 3 Iout (typ) (A) 0.35 Soft start No Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable Iout (max) (A) 0.5 Switching frequency (min) (kHz) 300 Switching frequency (max) (kHz) 620 Vout (max) (V) 11 Switch current limit (typ) (A) 0.5 Vout (min) (V) 0
Rating Automotive Vin (max) (V) 5.5 Vin (min) (V) 3 Iout (typ) (A) 0.35 Soft start No Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable Iout (max) (A) 0.5 Switching frequency (min) (kHz) 300 Switching frequency (max) (kHz) 620 Vout (max) (V) 11 Switch current limit (typ) (A) 0.5 Vout (min) (V) 0
SOT-23 (DBV) 5 8.12 mm² (2.9 mm × 2.8 mm)
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C4B
  • Functional Safety-Capable
  • 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
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C4B
  • Functional Safety-Capable
  • 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

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.

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.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet SN6501-Q1 Transformer Driver for Isolated Power Supplies datasheet (Rev. C) PDF | HTML Feb 26, 2021
Technical article Why signal isolation matters in 48-V HEV/EV systems (Rev. A) PDF | HTML Nov 10, 2025
Application brief How to Isolate Signal and Power in Isolated CAN Systems (Rev. D) PDF | HTML Nov 7, 2025
Application brief How to Isolate Signal and Power for an RS-485 System (Rev. D) PDF | HTML Nov 7, 2025
Analog design Journal Design considerations for isolated current sensing (Rev. A) PDF | HTML Jun 27, 2024
Application note How to Reduce Emissions in Push-Pull Isolated Power Supplies (Rev. A) PDF | HTML Oct 5, 2021
Application brief How to Isolate Signal and Power for I2C (Rev. B) PDF | HTML May 19, 2021
Functional safety information SN6501-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML Jun 18, 2020
Application brief High-Side Cutoff Switches for High-Power Automotive Applications (Rev. A) Nov 26, 2018
Application brief Simplify current and voltage monitoring with isolated SPI and I2C in your BMS Jul 3, 2018

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

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SOT-23 (DBV) 5 Ultra Librarian
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