Datasheet MP1542 (Monolithic Power Systems) - 3

MP1542 – 700KHz/1.3MHz BOOST CONVERTER WITH A 2A SWITCH ELECTRICAL CHARACTERISTICS VIN = VEN = 5V, TA = +25
°
C, unless otherwise noted. Parameter Symbol Condition Min Typ Max Units
Operating Input Voltage VIN 2.5 22 V Undervoltage Lockout VIN Rising 2.15 2.45 V Undervoltage Lockout 100 mV Hysteresis Supply Current (Shutdown) VEN = 0V 0.1 1 μA Supply Current (Quiescent) VFB = 1.35V 700 900 μA VFSEL = VIN 1.1 1.3 1.5 MHz Switching Frequency fSW VFSEL = GND 560 700 840 kHz FSEL High Threshold VFSEL Rising 2V V FSEL Low Threshold 0.5 V VFB = 0V, VFSEL = VIN 85 90 % Maximum Duty Cycle VFB = 0V, VFSEL = GND 92 95 EN High Threshold VEN Rising 1.5 V EN Low Threshold 0.5 V EN Input Bias Current VEN = 0V, 5V 1 μA Soft-Start Current 6 μA FB Voltage 1.225 1.25 1.275 V FB Input Bias Current –200 –100 nA Error Amp Voltage Gain AVEA 1000 V/V Error Amp G Transconductance EA 350 μA/V Error Amp Output Current 35 μA SW On-Resistance (5) RON 0.18 Ω SW Current Limit (5) Duty Cycle = 0% 2.6 A SW Current Limit (5) Duty Cycle = 50% 2 A SW Leakage VSW = 20V 1 μA Thermal Shutdown (5) 160 °C
Note:
5) Guaranteed by design.

MP1542 Rev. 1.5 www.MonolithicPower.com
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6/22/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved.