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

Availability: 24,318


Package | PIN: SOT-23 (DBV) | 5
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $1.78
10-24 $1.59
25-99 $1.48
100-249 $1.29
250-499 $1.19
500-749 $1.00
750-999 $0.82
1,000+ $0.75


  • 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

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Texas Instruments  SN6501DBVR

The SN6501 is a monolithic oscillator/power-driver, specifically designed for small formfactor, isolated power supplies in isolated interface applications. The device drives alow-profile, center-tapped transformer primary from a 3.3-V or 5-V DC power supply. The secondarycan 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 thecomplementary output signals to drive the ground referenced N-channel power switches. The internallogic 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 attemperatures from –40°C to 125°C.