Datasheet LTC3331 (Analog Devices) - 10
| Manufacturer | Analog Devices |
| Description | Nanopower Buck-Boost DC/DC with Energy Harvesting Battery Charger |
| Pages / Page | 34 / 10 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| File Format / Size | PDF / 577 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Prioritizer Buck-Boost to Buck
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LTC3331
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. 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 3331 G31 2ms/DIV 3331 G32 2ms/DIV 3331 G33 100µs/DIV BB_IN = 3V, VOUT = 3.3V VIN = 18V, VOUT = 3.3V V C IN TRANSITIONS 17V TO 18V, UV[3:0] = 1110 OUT = 100µF, L = 22µH COUT = 100µF, L = 22µH BB_IN = 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 VOUT = 1.8V VOUT = 3.3V VOUT = 1.8V VOUT = 3.3V 90 VOUT = 2.5V VOUT = 3.6V VOUT = 2.5V VOUT = 3.6V V V V V 80 OUT = 2.8V OUT = 4.5V OUT = 2.8V OUT = 4.5V 95 VOUT = 3V VOUT = 5V 95 VOUT = 3V VOUT = 5V 70 60 90 90 50 40 85 85 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 30 VOUT = 1.8V VOUT = 2.5V 20 VOUT = 3.3V 80 80 V 10 OUT = 5V VIN = 6V, L = 22µH, DCR = 0.19Ω DCR = 0.19Ω DCR = 0.45Ω 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) 3331 G34 3331 G35 3331 G36
Buck Efficiency vs VIN, for Buck-Boost Efficiency vs ILOAD, Buck-Boost Efficiency vs ILOAD, VOUT = 3.3V 250mA IPEAK Setting 5mA IPEAK Setting
100 100 100 L = 22µH, DCR = 0.19Ω 90 90 90 80 80 80 70 70 70 60 60 60 50 50 50 40 40 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 30 30 30 I I V V 20 LOAD = 100mA LOAD =20µA OUT = 1.8V OUT = 1.8V I 20 20 LOAD =100µA ILOAD =10µA BAT = 3.6V V V OUT = 2.5V BAT = 3.6V OUT = 2.5V 10 ILOAD =50µA ILOAD =5µA 10 L = 22µH VOUT = 3.3V 10 V L = 22µH OUT = 3.3V ILOAD =30µA R V V L = 0.36Ω OUT = 5.0V DCR = 5.1Ω OUT = 5.0V 0 0 0 4 6 8 10 12 14 16 18 1µ 10µ 100µ 1m 10m 1µ 10µ 100µ 1m VIN (V) I I LOAD (A) LOAD (A) 3331 G37 3331 G39 3331 G38 3331fc 10 For more information www.linear.com/LTC3331 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. 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 3331 G31 2ms/DIV 3331 G32 2ms/DIV 3331 G33 100µs/DIV BB_IN = 3V, VOUT = 3.3V VIN = 18V, VOUT = 3.3V V C IN TRANSITIONS 17V TO 18V, UV[3:0] = 1110 OUT = 100µF, L = 22µH COUT = 100µF, L = 22µH BB_IN = 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 VOUT = 1.8V VOUT = 3.3V VOUT = 1.8V VOUT = 3.3V 90 VOUT = 2.5V VOUT = 3.6V VOUT = 2.5V VOUT = 3.6V V V V V 80 OUT = 2.8V OUT = 4.5V OUT = 2.8V OUT = 4.5V 95 VOUT = 3V VOUT = 5V 95 VOUT = 3V VOUT = 5V 70 60 90 90 50 40 85 85 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 30 VOUT = 1.8V VOUT = 2.5V 20 VOUT = 3.3V 80 80 V 10 OUT = 5V VIN = 6V, L = 22µH, DCR = 0.19Ω DCR = 0.19Ω DCR = 0.45Ω 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) 3331 G34 3331 G35 3331 G36
Buck Efficiency vs VIN, for Buck-Boost Efficiency vs ILOAD, Buck-Boost Efficiency vs ILOAD, VOUT = 3.3V 250mA IPEAK Setting 5mA IPEAK Setting
100 100 100 L = 22µH, DCR = 0.19Ω 90 90 90 80 80 80 70 70 70 60 60 60 50 50 50 40 40 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 30 30 30 I I V V 20 LOAD = 100mA LOAD =20µA OUT = 1.8V OUT = 1.8V I 20 20 LOAD =100µA ILOAD =10µA BAT = 3.6V V V OUT = 2.5V BAT = 3.6V OUT = 2.5V 10 ILOAD =50µA ILOAD =5µA 10 L = 22µH VOUT = 3.3V 10 V L = 22µH OUT = 3.3V ILOAD =30µA R V V L = 0.36Ω OUT = 5.0V DCR = 5.1Ω OUT = 5.0V 0 0 0 4 6 8 10 12 14 16 18 1µ 10µ 100µ 1m 10m 1µ 10µ 100µ 1m VIN (V) I I LOAD (A) LOAD (A) 3331 G37 3331 G39 3331 G38 3331fc 10 For more information www.linear.com/LTC3331 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts
