ISL81805FRTZ-T中文资料瑞萨数据手册PDF规格书

特性 Features

▪ Wide input voltage range: 4.5V to 80V

▪ Wide output voltage range: 5V to 80V

▪ Four MOSFET drivers with adaptive shoot-through

protection

▪ Constant output voltage and output current

feedback loop control

▪ Light-load efficiency enhancement

• Low ripple diode emulation and burst mode

operation

▪ Programmable soft-start

▪ Supports startup into pre-biased rails

▪ Programmable frequency: 100kHz to 1MHz

▪ Support current sharing with cascade phase

interleaving

▪ External clock sync

▪ Clock out with accurate phase angle controlled by

PLL or frequency dithering

▪ PGOOD indicator

▪ Input current monitor

▪ Selectable mode between PWM/DE/Burst

▪ Accurate EN/UVLO threshold: ±2

▪ Low shutdown current: 5μA

▪ Complete protection: OCP (pulse-by-pulse and

optional hiccup or constant current mode), OVP,

OTP, and UVP