双极性晶体管

二极管

ESD保护、TVS、滤波和信号调节ESD保护

MOSFET

氮化镓场效应晶体管(GaN FET)

绝缘栅双极晶体管(IGBTs)

模拟和逻辑IC

汽车应用认证产品(AEC-Q100/Q101)

NXF6505-Q100

Low-noise, 1.2 A transformer driver for isolated power supplies

The NXF6505A/B-Q100 is a specialized push-pull transformer driver that is designed 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 5.5 V DC power supply, while achieving ultra-low noise and EMI using slew rate control and Spread Spectrum Clocking (SSC).

The NXF6505A/B-Q100 features internal protection features such as current limiting, undervoltage 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.

The NXF6505A/B-Q100 is constructed using an oscillator and a gate drive circuit that produces complementary output signals to drive ground-referenced N-channel power switches. These two complementary 1.2 A Power-MOSFET switches can be used to provide >6 W power. The 440 kHz internal oscillator is for applications that require higher efficiency and smaller transformers. 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, optimized for low EMI:

    • Slew-rate control output
    • Spread Spectrum Clocking (SSC)
  • 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
  • Internal switching frequency:
    • for NXF6505A-Q100: 160 kHz
    • for NXF6505B-Q100: 440 kHz
  • Synchronization of multiple devices with external clock input
  • 2.2 A current limit at 5 V
  • Enable pin to put device in low shutdown current: <1 μA
  • Thermal shutdown protection
  • Soft-start start-up

  • Packages

    • Small 6 pin SOT8061-1 (SC-74; TSOP-6) package
    • Small 6 pin SOT8120-1 (LSOT6) package

  • ESD protection:

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

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

  • Functional Safety-capable

Applications

  • Isolated power supply for automotive and industrial applications including:
    • 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
  • Motor control
  • Isolated power supplies for automotive (AEC-Q100)
    • Traction inverter
    • DC-DC converter
    • Battery management system
    • On-board charger

封装

型号 可订购的器件编号，（订购码(12NC)） 状态 标示 封装 外形图 回流焊/波峰焊 包装
NXF6505ADA-Q100 NXF6505ADA-Q100Z
(935691938342)		 Active N5A SOT8061-1
TSOT23-6
(SOT8061-1) 		SOT8061-1 REFLOW_BG-BD-1
SOT8061-1_342
NXF6505ADM-Q100 NXF6505ADM-Q100/GH
(935692543125)		 Samples available / Development G5A SOT8120-1
SOT23-6
(SOT8120-1) 		SOT8120-1 SOT8120-1_125
NXF6505BDA-Q100 NXF6505BDA-Q100Z
(935691940342)		 Active N5B SOT8061-1
TSOT23-6
(SOT8061-1) 		SOT8061-1 REFLOW_BG-BD-1
SOT8061-1_342
NXF6505BDM-Q100 NXF6505BDM-Q100/GH
(935692542125)		 Samples available / Development G5B SOT8120-1
SOT23-6
(SOT8120-1) 		SOT8120-1 SOT8120-1_125

环境信息

型号 可订购的器件编号 化学成分 RoHS RHF指示符
NXF6505ADA-Q100 NXF6505ADA-Q100Z NXF6505ADA-Q100 rohs rhf rhf
NXF6505ADM-Q100 NXF6505ADM-Q100/GH NXF6505ADM-Q100 rohs rhf rhf
NXF6505BDA-Q100 NXF6505BDA-Q100Z NXF6505BDA-Q100 rohs rhf rhf
NXF6505BDM-Q100 NXF6505BDM-Q100/GH NXF6505BDM-Q100 rohs rhf rhf
品质及可靠性免责声明

文档 (7)

文件名称 标题 类型 日期
NXF6505_Q100 Low-noise, 1.2 A transformer driver for isolated power supplies Data sheet 2025-08-26
AN90063 Questions about package outline drawings Application note 2025-09-15
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
SOT8120-1 plastic, SOT23-6, 6 pins; 0.95 mm pitch; 2.9 mm x 1.6 mm x 1.45mm body Package information 2025-09-09
REFLOW_BG-BD-1 Reflow soldering profile Reflow soldering 2021-04-06
TN90008 Reduce radiated emissions in isolated power designs using NXF650x-Q100 Technical note 2024-09-16
TN90009 Protection features of NXF5650x transformer drivers Technical note 2024-10-01

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