Product details

Rating Catalog Output current (A) 0.35 Vin (Min) (V) 3 Vin (Max) (V) 5.5 Soft start No Operating temperature range (C) -40 to 125 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 Catalog Output current (A) 0.35 Vin (Min) (V) 3 Vin (Max) (V) 5.5 Soft start No Operating temperature range (C) -40 to 125 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 5 mm² 2.9 x 1.6
  • 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
  • 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 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.

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.

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SN6505A ACTIVE Low-noise, 1-A, 160-kHz transformer driver with soft start for isolated power supplies Low-noise, 1-A, 160-kHz transformer driver with soft start for isolated power supplies
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Technical documentation

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Type Title Date
* Data sheet SN6501 Transformer Driver for Isolated Power Supplies datasheet (Rev. I) 02 Sep 2020
Application note How to Reduce Emissions in Push-Pull Isolated Power Supplies (Rev. A) 05 Oct 2021
Application note How to Isolate Signal and Power for an RS-485 System (Rev. C) 25 May 2021
Application note How to Isolate Signal and Power in Isolated CAN Systems (Rev. C) 25 May 2021
Application note How to Isolate Signal and Power for I2C (Rev. B) 19 May 2021
Application note Isolated RS-485 Transceiver Reference Design 10 May 2019
Technical article Top 6 design questions about I2C isolators 13 Mar 2019
Technical article Top 9 design questions about digital isolators 04 Feb 2019
Technical article Now that you have isolated your CAN signals, what about power? 09 Jan 2019
Application note Signal and Power Isolation with 3.3 V / 5 V Input and 12 V / 15 V Output 17 Oct 2018
Application note Isolated CAN solution by using ISO1050 and SN6501 (Rev. A) 03 Aug 2018
Technical article Top 7 design questions about isolated RS-485 transceivers 26 Jul 2018
User guide AMC1311EVM User's Guide 13 Nov 2017
User guide SN6501 Multi-Transformer EVM User's Guide 12 Nov 2012

Design & development

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Support software

SN650X-TRANS-PARAMETER-CALC

SLLC470.ZIP (205486 KB)
Simulation model

SN6501 Unencrypted PSpice Transient Model Package (Rev. A)

SLLM173A.ZIP (2 KB) - PSpice Model
Simulation model

SN6501 TINA-TI Reference Design

SLLM223.TSC (74 KB) - TINA-TI Reference Design
Simulation model

SN6501 TINA-TI Transient Spice Model

SLLM224.ZIP (13 KB) - TINA-TI Spice Model
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