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| PRODUCT NEWS BULLETIN ILC7526/36 USB Dual Power Control Switches Applications USB Host and self-powered Hubs USB bus-powered Hubs Hot plug-in power supplies Battery Charger circuits +3.3V VCC 10K Overcurrent Flags and seperate enable pins +5V VCC 100K Output current to 500mA with 750mA fault current limiting 10K USB Controller ON/OFF A ENA FLGA FLGB ENB 100K 47uF +5V DD+ GND USB Port A OUTA IN 0.1F Power Saving Features <1A typical off-state supply current 50A typical on-state supply current Over Current A Over Current B ON/OFF B DADA+ GND OUTB 47uF +5V DD+ GND ILC7526/36 4 USB Port B System Advantages Ultra low RDSON of 140m per switch 500mA continuous load current per channel 2 independent switches with Enables and Flags 2.4V typical undervoltage lockout 1.25A maximum short circuit limit Soft-start with 1mS turn-on Over current / over temperature protection - No external components USB Specifications complaint DBDB+ Extremely low supply current 50A on-state, <1A off-state Short-Circuit and Thermal shutdown protection System Options ILC7526 has active High Enable ILC7536 has active Low Enable Package Options 8-Pin SOIC General Description The ILC7526 contains dual high side power control switches, with independent enable and flag functions, integrated into a single 8Pin SOIC package. With just a few external components, the ILC7526 can be easily configured to meet requirements for either self powered or bus powered USB (Universal Serial Bus) applications. The ILC7526 has active high ENABLE inputs, while the ILC7536 ENABLE inputs are active low. With maximum RDSON value of 140m per switch, the USB voltage drop requirements can be achieved. Each switch can also supply up to 500mA, with internal circuitry limiting the fault current to 750mA. Fault conditions are also reported to the USB controller via one of the independent flag pins. Internal circuitry provides a soft-start that eliminates momentary upstream voltage drops when the switch is enabled, especially in bus powered applications. Additional features include undervoltage lockout (2.4V), fast turn-off, 2.8V to 5.8V input voltage range, thermal shutdown to prevent switch failure from high current loads, and 3.3V and 5V logic compatible enable inputs. www.impalalinear.com 5225 Hellyer Ave., Suite 200 San Jose, CA 95138 (408) 574-3939 IMPALA LINEAR CORPORATION |
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