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NXF6505ADA-Q100

The NXF6505A/B-Q100 is a specialized push-pull transformer driver that is designed to deliver low noise and low EMI for isolated power supplies in small form factors. This driver is capable of driving low-profile, center-tapped transformers from a 2.25 V to 5 V DC power supply, while achieving ultra-low noise and EMI through the use of slew rate control and Spread Spectrum Clocking (SSC).

The NXF6505A/B-Q100 comprises an oscillator and a gate drive circuit that produces complementary output signals to drive ground-referenced N-channel power switches. To ensure start-up under heavy loads, the device includes two 1.2 A Power-MOSFET switches. Additionally, the switching clock can be provided externally for precise placement of switcher harmonics or when operating with multiple transformer drivers.

The NXF6505A/B-Q100 also features internal protection features such as current limiting, under-voltage lockout, thermal shutdown, and break-before-make circuitry, ensuring the device operates within safe limits. The device also includes a soft-start feature that prevents high inrush current during power-up with large load capacitors.

The NXF6505A-Q100 includes a 170 kHz internal oscillator for applications that need to minimize emissions, while the NXF6505B-Q100 has a 440 kHz internal oscillator for applications that require higher efficiency and smaller transformer. The NXF6505A/B-Q100 is available in a small 6 pin SOT8061-1 package and is characterized for operation within a temperature range of -55 °C to 125 °C.

This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications.

Features and benefits

  • Automotive product qualification in accordance with AEC-Q100 (Grade 1)

    • Specified from -55 °C to +125 °C

  • Push-pull driver for transformers
  • Wide input voltage range: 2.25 V to 5.5 V
  • High output drive: 1.2 A at 5 V supply
  • Low RON 0.2 Ω maximum at 5 V supply
  • Optimized for low EMI
  • Spread Spectrum Clocking (SSC)
  • Internal switching frequency:
    • for NXF6505A-Q100: 170 kHz )
    • for NXF6505B-Q100: 440 kHz )
  • Synchronization of multiple devices with external clock input
  • Slew-rate control
  • 1.7 A current limit
  • Enable pin to put device in low shutdown current: <1 μA
  • Thermal shutdown
  • Small 6 pin SOT8061-1 package
  • Soft-start to reduce In-rush current

  • ESD protection:

    • HBM: ANSI/ESDA/JEDEC JS-001 class 3A exceeds 6000 V

    • CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1500 V

Applications

  • Isolated power supply for CAN, RS-485, RS-422, RS-232, SPI, I²C, low-power LAN
  • Low-noise isolated USB supplies
  • Process control
  • Telecom supplies
  • Radio supplies
  • Distributed supplies
  • Medical instruments
  • Precision instruments
  • Low-noise filament supplies
  • Isolated power supplies for automotive (Q100)
    • Traction inverter and motor control
    • DC-DC converter
    • Battery management system
    • On-board charger

Parametrics

Type number Rating VCC [min] (V) VCC [max] (V) IO [max] (A) Features Operating temperature range (°C) Switching frequency [min] (kHz) Switching frequency [max] (kHz) Package name Pin count Package area (mm2) Package size (L x W) (mm)
NXF6505ADA-Q100 Automotive, Industrial 2.25 5.5 1.2 Enable, Short-circuit protection, Slew-rate control, Spread spectrum clocking, Thermal shutdown, Fail-safe IO -55 to 125 139 209 TSSOP6 6 8.12 2.9 x 2.8

Package

Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
NXF6505ADA-Q100 NXF6505ADA-Q100Z
(935691938342)		 Development SOT8061-1
TSSOP6
(SOT8061-1) 		SOT8061-1 SOT8061-1_342

Environmental information

Type number Orderable part number Chemical content RoHS RHF-indicator
NXF6505ADA-Q100 NXF6505ADA-Q100Z NXF6505ADA-Q100 rohs rhf rhf
Quality and reliability disclaimer

Documentation (4)

File name Title Type Date
NXF6505_IBIS_Model NXF6505 IBIS model IBIS model 2024-04-25
SOT8061-1 plastic, surface-mounted package; 6 leads; 0.95 mm pitch; 2.9 mm x 1.6 mm x 1.1 mm body Package information 2024-04-09
SOT8061-1_342 TSOT23-6FC; Reel dry pack for SMD, 7"; Q3/T4 product orientation Packing information 2024-04-29
NXF6505A_SpiceModel NXF6505A Spice model SPICE model 2024-04-25

Support

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Models

File name Title Type Date
NXF6505_IBIS_Model NXF6505 IBIS model IBIS model 2024-04-25
NXF6505A_SpiceModel NXF6505A Spice model SPICE model 2024-04-25

Ordering, pricing & availability

Type number Orderable part number Ordering code (12NC) Status Packing Packing Quantity Buy online

Sample

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How does it work?

The interactive datasheets are based on the Nexperia MOSFET precision electrothermal models. With our interactive datasheets you can simply specify your own conditions interactively. Start by changing the values of the conditions. You can do this by using the sliders in the condition fields. By dragging the sliders you will see how the MOSFET will perform at the new conditions set.

Interactive datasheet

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
NXF6505ADA-Q100 NXF6505ADA-Q100Z 935691938342 SOT8061-1 Order product