Datasheet LTC3330 (Analog Devices) - 9

LTC3330
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. RDS(ON) of Buck PMOS/NMOS Prioritizer Buck to Buck-Boost IPEAK_BUCK vs Temperature vs Temperature Transition
300 2.0 V OUTPUT IN = 5V VIN = 5V VOLTAGE 290 50mV/DIV 1.8 280 DC-COUPLED, OFFSET = 3.3V 270 1.6 EH_ON 0V 5V/DIV (mA) 260 (Ω) PMOS 250 1.4 BUCK INDUCTOR 240 R DS(ON) NMOS CURRENT I PEAK_BUCK 1.2 200mA/DIV 230 0mA BUCK-BOOST 220 INDUCTOR 1.0 CURRENT 0mA 210 200mA/DIV 3330 G30 100µs/DIV 200 0.8 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 VIN TRANSITIONS 18V TO 17V, UV[3:0] = 1110 TEMPERATURE (°C) TEMPERATURE (°C) BAT = 4.1V, VOUT = 3.3V I 3330 G28 3330 G29 LOAD = 50mA, COUT = 100µF, LBUCK = 22µH, LBUCK-BOOST = 22µH
Prioritizer Buck-Boost to Buck Buck-Boost Load Step Response Buck Load Step Response Transition
OUTPUT OUTPUT VOLTAGE OUTPUT VOLTAGE 50mV/DIV DC-COUPLED, VOLTAGE 20mV/DIV OFFSET = 3.3V 20mV/DIV AC-COUPLED AC-COUPLED EH_ON 5V/DIV 0V BUCK INDUCTOR LOAD LOAD CURRENT CURRENT CURRENT 200mA/DIV 0mA 25mA/DIV 1mA 25mA/DIV 1mA BUCK-BOOST INDUCTOR CURRENT 0mA 200mA/DIV 3330 G31 2ms/DIV 3330 G32 2ms/DIV 3330 G33 100µs/DIV BAT = 3V, VOUT = 3.3V VIN = 18V, VOUT = 3.3V V C IN TRANSITIONS 17V TO 18V, UV[3:0] = 1110 OUT = 100µF, L = 22µF COUT = 100µF, L = 22µF BAT = 4.1V, V LOAD STEP FROM 1mA TO 50mA LOAD STEP FROM 1mA TO 50mA OUT = 3.3V ILOAD = 50mA, COUT = 100µF, LBUCK = 22µH, LBUCK-BOOST = 22µH
Buck Efficiency vs VIN for Buck Efficiency vs VIN for Buck Efficiency vs ILOAD ILOAD = 100mA, L = 22µH ILOAD = 100mA, L = 100µH
100 100 100 DCR = 0.19Ω VOUT SETTING DCR = 0.45Ω 90 1.8V 3.3V 80 2.5V 3.6V 95 2.8V 4.5V 95 70 3V 5V 60 90 90 50 40 VOUT SETTING 85 85 EFFICIENCY (%) 1.8V EFFICIENCY (%) EFFICIENCY (%) 30 2.5V VOUT SETTING 20 3.3V 1.8V 3.3V 5V 80 80 2.5V 3.6V 10 2.8V 4.5V VIN = 6V, L = 22µH, DCR = 0.19Ω 3V 5V 0 75 75 1µ 10µ 100µ 1m 10m 100m 4 6 8 10 12 14 16 18 4 6 8 10 12 14 16 18 ILOAD (A) VIN (V) VIN (V) 3330 G34 3330 G35 3330 G36 3330fc For more information www.linear.com/LTC3330 9 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Package Description Revision History Typical Application Related Parts