Datasheet MAX17270, MAX17271 (Maxim) - 9

MAX17270/MAX17271 nanoPower Triple-Output, Single-Inductor, Multiple-Output (SIMO) Buck-Boost Regulator
Typical Operating Characteristics
(VIN = 2.7V , OUT1 = 1.2V , ILIM1 = 0.4A , OUT2 = 1.8V , ILIM2 = 0.8A , OUT3 = 3.3V , ILIM3 = 1.1A, L1 = 2.2μH (Coilcraft XFL4020-222ME), COUT1 = COUT2 = COUT3 = 22μF (TDK C1608X5R1A226M080AC))
SHUTDOWN SUPPLY CURRENT SUPPLY CURRENT vs. INPUT VOLTAGE vs. INPUT VOLTAGE SUPPLY CURRENT vs. TEMPERATURE
900 toc01 1.6 toc02 1.8 toc03 BIAS OFF = 1 TA = 25°C 800 1.4 1.6 OUT1, OUT2, OUT3 ON OUT1, OUT2 ON 700 TA = +85°C 1.4 OUT1 ON T 1.2 A = +25°C 600 A) TA = -40°C A) 1.2 A) (n 1.0 (µ (µ 500 1.0 0.8 I SUPPLY I SUPPLY 400 I SUPPLY 0.8 0.6 300 0.6 OUT1, OUT2, OUT3 ON 200 0.4 OUT1, OUT2 ON OUT1 ON 0.4 100 0.2 0.2 0 0.0 0.0 2.5 3 3.5 4 4.5 5 5.5 2.5 3 3.5 4 4.5 5 5.5 -50 -25 0 25 50 75 100 INPUT VOTAGE (V) INPUT VOLTAGE (V) TEMPERATURE (°C)
LOAD REGULATION LOAD REGULATION LOAD REGULATION (V (V OUT = 1.2V, ILIM = 0.4A) OUT = 1.8V, ILIM = 0.8A) (VOUT = 3.3V, ILIM = 1.1A)
toc04 1.860 toc05 3.380 toc06 1.228 1.850 1.224 3.360 1.840 1.220 1.830 LTAGE (V) 3.340 1.216 LTAGE (V) LTAGE (V) 1.820 5V INPUT 5V INPUT 5V INPUT 1.212 1.810 3.320 OUTPUT VO OUTPUT VO OUTPUT VO 1.208 1.800 3.300 1.204 1.790 2.7V INPUT 2.7V INPUT 2.7V INPUT 1.780 1.200 0 50 100 150 200 250 3.280 0 10 20 30 40 50 60 70 80 90 100 LOAD CURRENT (mA) 0 50 100 150 200 250 300 LOAD CURRENT (mA) LOAD CURRENT (mA)
SWITCHING WAVEFORMS– SWITCHING WAVEFORMS– SWITCHING WAVEFORMS– ULTRA-LOW-POWER MODE LIGHT UTILIZATION MEDIUM UTILIZATION
toc07 toc08 toc09 VOUT1 50mV/div VOUT1 50mV/div VOUT1 50mV/div VOUT2 50mV/div VOUT2 50mV/div VOUT2 50mV/div VOUT3 50mV/div VOUT3 50mV/div VOUT3 50mV/div ILX ILX ILX 500mA/div 500mA/div 500mA/div IOUT1 = IOUT2 = IOUT3 = 100µA I IOUT1 = 15mA, IOUT2 = IOUT3 = 30mA 1ms/div OUT1 = 5mA IOUT2 = IOUT3 = 10mA 10µs/div 5µs/div www.maximintegrated.com Maxim Integrated │ 9