Datasheet Intersil ISL78208 — 数据表

DATASHEET
ISL78208 FN8354
Rev 1.00
July 29, 2014 Wide VIN Dual Standard Buck Regulator with 3A/3A Continuous Output Current Features The ISL78208 is a dual standard buck regulator capable of 3A
per channel with continuous output current. With an input
range of 4.5V to 28V, it provides a high frequency power
solution for a variety of point of load applications. Wide input voltage range from 4.5V to 28V Adjustable output voltage with continuous output current up
to 3A The PWM controller in the ISL78208 drives an internal
switching N-Channel power MOSFET and requires an external
Schottky diode to generate the output voltage. The integrated
power switch is optimized for excellent thermal performance
up to 3A of output current. The PWM regulator switches at a
default frequency of 500kHz and it can be user programmed
or synchronized from 300kHz to 2MHz. The ISL78208 utilizes
peak current mode control to provide flexibility in component
selection and minimize solution size. The protection features
include overcurrent, UVLO and thermal overload protection. Current mode control Adjustable switching frequency from 300kHz to 2MHz Independent power-good detection Selectable In-phase or out-of-phase PWM operation Independent, sequential, ratiometric or absolute tracking
between outputs Internal 2ms Soft-start time Overcurrent/short circuit protection, thermal overload
protection, UVLO The ISL78208 is available in 5mmx5mm 32 Ld Wettable
Flank Quad Flat Pb-free (WFQFN) package. Boot undervoltage detection The ISL78208 is rated for the automotive temperature range
(-40В°C to +105В°C). Qualified for automotive applications Pb-Free (RoHS compliant) Applications DSP and embedded processor power supply Infotainment system power 100 EFFICIENCY (%) 90
12VOUT 1MHz 80
70 …