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XRP7740ILB-AAAA-F Datasheet(PDF) 3 Page - Exar Corporation |
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XRP7740ILB-AAAA-F Datasheet(HTML) 3 Page - Exar Corporation |
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3 / 31 page  XRP7740 REV 1.1.0 Quad-Output Digital PWM Buck Controller LOW DROP-OUT REGULATOR PARAMETER MIN TYP MAX UNITS CONDITIONS LDOOUT Output Voltage (LDO=LOW) 3.15 3.3 3.45 V ♦ 6.5 <= VIN1 <= 20V 0mA < ILDOOUT < 100mA LDOOUT Output Voltage (LDO=HIGH) 4.75 5.0 5.25 V ♦ 6.5 <= VIN1 <= 20V 0mA < ILDOOUT < 100mA LDOOUT Short Circuit Current Limit 110 220 mA ♦ V LDOOUT =0V AUXILIARY ADCs PARAMETER MIN TYP MAX UNITS CONDITIONS ADC Resolution 8 bit Linearity Error Integral 2 LSB Linearity Error Differential -1 1 LSB Input Dynamic Range VIN1 6.5 20 V ♦ Input Dynamic Range VIN2 6.5 20 V ♦ ISENSE ADC PARAMETER MIN TYP MAX UNITS CONDITIONS ADC Resolution 7 bit ADC LSB 5 mV Referred to the input Input Dynamic Range 0 -320 mV PWM GENERATORS and OSCILLATOR PARAMETER MIN TYP MAX UNITS CONDITIONS Output frequency range 300 1500 kHz ♦ Steps defined in the table in the “PWM Switching Frequency Setting” Section below. Channel-to-channel phase shift step 90 deg With 4 phase setting. Channel-to-channel phase shift step 120 deg With 3 phase setting. Minimum On Time 40 ns 1nF of gate capacitance. Minimum Off Time 125 ns 1nF of gate capacitance CLOCK IN Synchronization Range -5 5 % ♦ EXAR RESERVES THE RIGHT TO MAKE CHANGES TO THIS DATASHEET. EXAR CONFIDENTIAL, PRELIMINARY & PROPRIETARY. DO NOT DISTRIBUTE OR COPY. 3 |
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