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FP6711 Datasheet(PDF) 2 Page - Fitipower Integrated Technology Inc. |
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FP6711 Datasheet(HTML) 2 Page - Fitipower Integrated Technology Inc. |
2 / 13 page ![]() 2 FP6711-1.4-DEC-2011 FP6711 85T fitipower integrated technology lnc. Typical Application Circuit COUT 22µF ADEN LBI VIN FP6711 EN COMP FB LBO VOUT GND SW 10µF R1 R2 L1 10µH OFF ON R5 Low Battery Warning CIN RC CC 680K 100P R3 R4 VIN VOUT Figure 2. Typical Application Circuit of FP6711 Functional Pin Description Pin Name Pin Function EN Chip-enable input. Pull the pin high to enable IC. Pull the pin low to shutdown IC. COMP The gm error amplifier output. A frequency compensation network is connected from this pin to ground to compensate the loop. FB The feedback input for adjusting output voltage. This pin connects resistor divider that output voltage could be adjusted from 1.8V to 4V. The feedback voltage is typical at 0.5V. GND Ground pin VOUT Output voltage pin VIN Input voltage pin SW Switch input pin which is connected to inductor ADEN Auto-discharge enable input pin. The auto-discharge function will be enabled when this pin is connected to logic high. It will be disabled when this pin is connected to logic low. LBI Low battery detector input. A low battery warning signal is generated at LBO when the voltage on LBI drops below the threshold voltage of 500mV. Connect LBI to GND or VIN when low battery detector function is not used. Don’t leave this pin floating. LBO Open drain low battery detector output. This Pin will be pulled low when the voltage on LBI drops below the threshold voltage of 500mV. An external pull-up resistor has to be connected between LBO and VOUT. |
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