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SN6501

ACTIVE

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

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Data sheet

SN6501

ACTIVE
Data sheet Order now

Product details

Rating Catalog Iout (typ) (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 Switch current limit (typ) (A) 0.5
Rating Catalog Iout (typ) (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 Switch current limit (typ) (A) 0.5
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • 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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Technical documentation

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Type Title Date
* Data sheet SN6501 Transformer Driver for Isolated Power Supplies datasheet (Rev. I) PDF | HTML 02 Sep 2020
Product overview Isolated Power Topologies for PLC I/O Modules and Other Low-Power Applications PDF | HTML 09 Nov 2022
Application note Isolated RS-485 Transceiver Reference Design (Rev. A) PDF | HTML 23 Sep 2022
Application note Isolated CAN Solution by Using ISO1050 and SN6501 (Rev. B) PDF | HTML 22 Sep 2022
Application note How to Reduce Emissions in Push-Pull Isolated Power Supplies (Rev. A) PDF | HTML 05 Oct 2021
Application brief How to Isolate Signal and Power for an RS-485 System (Rev. C) PDF | HTML 25 May 2021
Application brief How to Isolate Signal and Power in Isolated CAN Systems (Rev. C) PDF | HTML 25 May 2021
Application brief How to Isolate Signal and Power for I2C (Rev. B) PDF | HTML 19 May 2021
Technical article Top 6 design questions about I2C isolators PDF | HTML 13 Mar 2019
Technical article Top 9 design questions about digital isolators PDF | HTML 04 Feb 2019
Technical article Now that you have isolated your CAN signals, what about power? PDF | HTML 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
Technical article Top 7 design questions about isolated RS-485 transceivers PDF | HTML 26 Jul 2018
EVM User's guide AMC1311EVM User's Guide 13 Nov 2017
EVM User's guide SN6501 Multi-Transformer EVM User's Guide 12 Nov 2012

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