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MP8720 Datasheet(PDF) 4 Page - Monolithic Power Systems |
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MP8720 Datasheet(HTML) 4 Page - Monolithic Power Systems |
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4 / 23 page  MP8720 – 26V, 10A, SYNCHRONOUS BUCK CONVERTER WITH ADJUSTABLE CLM MP8720 Rev. 1.01 www.MonolithicPower.com 4 8/1/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. ELECTRICAL CHARACTERISTICS VIN = 12V, 3V3 = 3.3V, TJ = 25°C, RMODE = 0Ω, unless otherwise noted. Parameters Symbol Condition Min Typ Max Units Supply Current 3V3 supply current I3V3 VEN = 3V, VFB = 0.65V, no load 140 230 µA 3V3 shutdown current I3V3 SDN VEN = 0V, no load 1 µA MOSFET High-side switch on resistance HSRDS-ON TJ = 25°C 19 mΩ Low-side switch on resistance LSRDS-ON TJ = 25°C 7 mΩ Switch leakage SWLKG VEN = 0V, VSW = 0V 0 1 μA Current Limit Low-side valley current limit ILIMIT CLM = 0Ω 8.5 A CLM = 90kΩ 9 10 11 A CLM = 150kΩ 13 A CLM = float 16.5 A Switching Frequency and Minimum Off Time Switching frequency Fs 700 kHz Constant on timer TON VIN = 5V, VOUT = 1.8V 430 515 600 ns Minimum on time (6) TON MIN 70 ns Minimum off time (6) TOFF MIN 240 ns Protection OVP threshold VOVP 125 130 135 %VREF UVP-1 threshold VUVP-1 70 75 80 %VREF UVP-1 foldback timer (6) TUVP-1 30 µs UVP-2 threshold VUVP-2 45 50 55 %VREF Reference and Soft Start, Soft Stop Reference voltage VREF 594 600 606 mV Feedback current IFB VFB = 0.62V 10 50 nA Soft-start time TSStart EN to PG up 1.8 2.2 2.6 ms MODE Mode source current IMODE 9 10 11.4 μA Enable and UVLO En rising threshold VEN TH 1.12 1.22 1.32 V En hysteresis VEN-HYS 125 mV Enable input current IEN VEN = 2V 5 μA VEN = 0V 1 VCC under-voltage lockout threshold rising VCCVth 2.9 3.0 3.1 V VCC under-voltage lockout threshold hysteresis VCCHYS 220 mV VIN under-voltage lockout threshold rising VINVTH 4.2 4.4 V VIN under-voltage lockout threshold hysteresis VINHYS 360 mV |
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