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MP3421 датащи(PDF) 4 Page - Monolithic Power Systems |
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MP3421 датащи(HTML) 4 Page - Monolithic Power Systems |
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4 / 16 page ![]() MP3421—5.5A, 600KHZ HIGH EFFICIENCY, SYNCHRONOUS, STEP-UP CONVERTER WITH OUTPUT DISCONNECT IN 2X2MM QFN PACKAGE MP3421 Rev. 1.0 www.MonolithicPower.com 4 11/13/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved. ELECTRICAL CHARACTERISTICS VIN = VEN = 3.3V, VOUT = 5V, TJ= -40°C to125°C, typical values are tested at TJ =25°C, unless otherwise noted. Parameters Symbol Condition Min Typ Max Units Voltage Range Start-Operating Input Voltage VIN 1.9 5.5 V VEN=VIN=3.3V, VOUT=5V, no load Measured on OUT, TJ=25°C 43 57 µA Quiescent Current IQ_NS VEN=VIN=3.3V, VOUT=5V, no load Measured on IN 0.3 µA Shutdown Current ISD VEN=VOUT=0V, Measured on IN, TJ=25°C 0.1 1 µA IN UVLO Rising Threshold VUVLO_IN-R VIN Rising TJ=25°C 1 1.3 1.6 V IN UVLO Falling Threshold VUVLO_IN-F VIN Falling, VOUT=5V 650 mV VOUT Start-Switching Rising Threshold VUVLO_OUT_R TJ=25°C 1.7 1.79 V Step-up Converter TJ=25°C 500 600 700 Operation Frequency FSW -40°C≤TJ≤125°C 440 600 760 kHz TJ=25°C 795 807 819 Feedback Voltage VFB -40°C≤TJ≤125°C 791 807 823 mV Feedback Input Current IFB VFB=850mV 1 50 nA NMOS On-Resistance RNDS_ON 15 mΩ NMOS Leakage Current IN_LK VSW=5V 100 nA PMOS On-Resistance RPDS_ON 20 mΩ PMOS Leakage Current IP_LK VSW=5V, VOUT=0V 0.1 µA Maximum Duty Cycle DMAX 90 95 % VOUT=1.7V 0.7 A Linear-Charge Current Limit (5) ICH_LIMIT VOUT=0V 0.2 A ISW_LIMIT1 VIN=5V, VOUT=3.3V 4 A NMOS Current Limit (5) ISW_LIMIT2 Duty=44%, VIN=2.8V, VOUT=5V 5.5 A Logic Interface EN High-Level Voltage VEN _H 1.2 V EN Low-Level Voltage VEN _L 0.4 V EN Input Current IEN Connect to VIN 10 nA Protection Thermal Shutdown (5) 150 °C Over Temperature Hysteresis (5) 20 °C Notes: 5) Guaranteed by characterization, not production tested. |
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