Datasheet MP28300 (Monolithic Power Systems) - 7

MP28300 – ULTRA-LOW IQ STEP-DOWN CONVERTER TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN1 = 3.6V, VOUT1 = 1.8V, L1 = 2.2µH, CIN1 = 10µF, COUT1 = 10µF, VIN2 = 3.6V, VOUT2 = 1.8V, CIN2 = 1µF, COUT2 = 1µF, TA = +25°C, unless otherwise noted. LDO Shutdown Current Buck Current Limit vs. VIN LDO Current Limit vs. VIN vs. Input Voltage
CTRL4/5=0V 100 700 400 90 600 (nA) 80 300 70 (mA) 500 (mA) 60 400 50 LIMIT LIMIT 200 300 40 30 200 100 20 CURRENT CURRENT 100 SHUTDOWN CURRENT 10 0 0 0 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 INPUT VOLTAGE (V) VIN (V) VIN (V)
Buck VIN UVLO Rising CTRL Rising and Falling Reference Voltage vs. Threshold vs. Temperature Threshold vs. Temperature Temperature
3 1 0.700 0.9 2.5 0.650 (V) 0.8 Rising Rising 0.600 0.7 2 0.6 TAGE (V) Falling 0.550 1.5 0.5 0.500 in UVLO (V) Falling 0.4 1 THRESHOLD 0.450 V 0.3 0.400 CTRL 0.2 0.5 0.1 0.350 REFERENCE VOL 0 0 0.300 -60 -40 -20 0 20 40 60 80 100 -60 -40 -20 0 20 40 60 80 100 -60 -40 -20 0 20 40 60 80 100
Buck Current Limit vs. LDO Current Limit vs. Frequency vs. Temperature Temperature Temperature
700 400 2.0 600 300 1.5 (mA) 500 (mA) (MHz) 400 LIMIT LIMIT 200 1.0 300 200 100 FREQUENCY 0.5 CURRENT CURRENT 100 0 0 0.0 -60 -40 -20 0 20 40 60 80 100 -60 -40 -20 0 20 40 60 80 100 -60 -40 -20 0 20 40 60 80 100 MP28300 Rev.1.1 www.MonolithicPower.com 7 6/12/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved.