Nexperia NXF6505A

Description

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

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 outputSpread Spectrum Clocking (SSC)Wide input voltage range: 2.25 V to 5.5 VHigh output drive: 1.2 A at 5 V supplyLow RON 0.2 Ω maximum at 5 V supplyInternal switching frequency:for NXF6505A-Q100: 160 kHzfor NXF6505B-Q100: 440 kHzSynchronization of multiple devices with external clock input2.2 A current limit at 5 VEnable pin to put device in low shutdown current: <1 μAThermal shutdown protectionSoft-start start-upPackages

Small 6 pin SOT8061-1 (SC-74; TSOP-6) packageSmall 6 pin SOT8120-1 (LSOT6) packageESD 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

Typical applications

More information

• Datasheet
• IC product information