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SN6501
  • SN6501

SN6501

ACTIVE

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

Texas Instruments SN6501 Product Info

1 April 2026 3

Parameters

Rating

Catalog

Vin (max) (V)

5.5

Vin (min) (V)

3

Iout (typ) (A)

0.35

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

Package

SOT-23 (DBV)-5-8.12 mm² 2.9 x 2.8

Features

  • 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

Description

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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