ISL74420M中文资料Radiation Tolerant Quad Adjustable Clock Fanout for Power Management ICs数据手册Renesas规格书

描述 Description

The ISL74420M is a radiation tolerant, quad-output clock fanout IC with an optional internal oscillator. It provides synchronization clocks for any application and is particularly useful in multiphase power converters. 

Connect multiple ISL74420M devices to create more than four synchronized clocksSet division and delay options through selection pins or over an I2C/SMBus interfaceConfigure each of the four outputs to a specific frequency division and phase delayTune the 48MHz internal oscillator by ±10% with an external resistorThe ISL74420M is available in a 48-lead TQFP-EP package, with specifications covering a temperature range of −55 °C to +125 °C.

特性 Features

• Qualified to Renesas Rad Tolerant Screening and QCI Flow (R34TB0004EU)
• PVIN supply range: 3V to 18V
• Independent clock output supply: 3V to 5.5V
• Programmable output frequency starting at 25kHz
• Internal or external clock source

• Programmable phase delay as low as 15° increments
• I²C/SMBus compatible
• I²C/SMBus or pin strapping to set frequency and phase
• TID radiation lot acceptance testing (LDR ≤10mrad(Si)/s)
• ISL74420M30NZ: 30krad(Si)
• ISL74420M50NZ: 50krad(Si)

• SEE characterization
• No DSEE for PVIN = 20.7V, VCC = 5.5V, and VCCEXT = 6.5V at 46MeV·cm²/mg
• SEFI <10μm² at 46MeV·cm²/mg
• No missing pulse SETs and frequency deviation SETs <3.6% on CLKOUTx at 46MeV·cm²/mg

应用 Application

• Multiphase power converters
• Synchronizing multiple converters on one board to control EMI and crosstalk