Datasheet LTC3331 (Analog Devices) - 9
| Manufacturer | Analog Devices |
| Description | Nanopower Buck-Boost DC/DC with Energy Harvesting Battery Charger |
| Pages / Page | 34 / 9 — 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. Buck Peak Current. RDS(ON) of Buck PMOS/NMOS
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LTC3331
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Buck Peak Current RDS(ON) of Buck PMOS/NMOS Buck-Boost Load Regulation, vs Temperature vs Temperature VOUT = 3.3V
300 2.0 3.40 VIN = 5V VIN = 5V COUT = 100µF 290 3.38 L = 22µH 1.8 280 IPK[2:0] = 111 3.36 270 1.6 3.34 (mA) 260 (Ω) PMOS 3.32 BB_IN = 4.1V 250 1.4 (V) 3.30 BB_IN = 2.1V 240 R DS(ON) NMOS V OUT 3.28 I PEAK_BUCK 1.2 230 3.26 220 1.0 3.24 210 3.22 200 0.8 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 3.201µ 10µ 100µ 1m 10m 100m TEMPERATURE (°C) TEMPERATURE (°C) I 3331 G22 3331 G23 LOAD (A)
Buck-Boost Line Regulation,
3331 G24
VOUT = 3.3V Buck-Boost Switching Waveforms Buck Load Regulation, 3.3V
3.400 OUTPUT 3.400 COUT = 100µF V VOLTAGE IN = 4V 3.375 L = 22µH 50mV/DIV 3.375 COUT = 100µF IPK[2:0] = 111 L = 22µH AC-COUPLED 3.350 SWA 3.350 VOLTAGE 0V 3.325 2V/DIV 3.325 LOAD = 1mA (V) (V) 3.300 SWB 3.300 V OUT VOLTAGE LOAD = 50mA V OUT 3.275 2V/DIV 3.275 0V 3.250 INDUCTOR 3.250 CURRENT 0mA 3.225 200mA/DIV 3.225 3331 G26 8µs/DIV 3.200 BAT = 2.1V, VOUT = 3.3V 3.200 2.1 2.4 2.7 3 3.3 3.6 3.9 4.2 I 1µ 10µ 100µ 1m 10m 100m LOAD = 10mA BB_IN (V) L = 22µH, COUT = 100µF ILOAD (A) 3331 G27 3331 G25
Prioritizer Buck to Buck-Boost Buck Line Regulation, 3.3V Buck Switching Waveforms Transition
3.400 OUTPUT COUT = 100µF OUTPUT VOLTAGE 3.375 L = 22µH VOLTAGE 50mV/DIV 50mV/DIV DC-COUPLED, AC-COUPLED OFFSET = 3.3V 3.350 EH_ON 3.325 5V/DIV LOAD = 1mA SW VOLTAGE 0V (V) 10V/DIV 0V BUCK 3.300 INDUCTOR V OUT LOAD = 100mA CURRENT 3.275 INDUCTOR 200mA/DIV CURRENT 0mA BUCK-BOOST 3.250 200mA/DIV INDUCTOR 0mA CURRENT 0mA 3.225 200mA/DIV 3331 G29 3331 G30 8µs/DIV 100µs/DIV 3.200 VIN = 18V, VOUT = 3.3V VIN TRANSITIONS 18V TO 17V, UV[3:0] = 1110 4 6 8 10 12 14 16 18 ILOAD = 10mA BB_IN = 4.1V, VOUT = 3.3V VIN (V) L = 22µH, COUT = 100µF ILOAD = 50mA, COUT = 100µF, LBUCK = 22µH, 3331 G28 LBUCK-BOOST = 22µH 3331fc For more information www.linear.com/LTC3331 9 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. Buck Peak Current RDS(ON) of Buck PMOS/NMOS Buck-Boost Load Regulation, vs Temperature vs Temperature VOUT = 3.3V
300 2.0 3.40 VIN = 5V VIN = 5V COUT = 100µF 290 3.38 L = 22µH 1.8 280 IPK[2:0] = 111 3.36 270 1.6 3.34 (mA) 260 (Ω) PMOS 3.32 BB_IN = 4.1V 250 1.4 (V) 3.30 BB_IN = 2.1V 240 R DS(ON) NMOS V OUT 3.28 I PEAK_BUCK 1.2 230 3.26 220 1.0 3.24 210 3.22 200 0.8 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 3.201µ 10µ 100µ 1m 10m 100m TEMPERATURE (°C) TEMPERATURE (°C) I 3331 G22 3331 G23 LOAD (A)
Buck-Boost Line Regulation,
3331 G24
VOUT = 3.3V Buck-Boost Switching Waveforms Buck Load Regulation, 3.3V
3.400 OUTPUT 3.400 COUT = 100µF V VOLTAGE IN = 4V 3.375 L = 22µH 50mV/DIV 3.375 COUT = 100µF IPK[2:0] = 111 L = 22µH AC-COUPLED 3.350 SWA 3.350 VOLTAGE 0V 3.325 2V/DIV 3.325 LOAD = 1mA (V) (V) 3.300 SWB 3.300 V OUT VOLTAGE LOAD = 50mA V OUT 3.275 2V/DIV 3.275 0V 3.250 INDUCTOR 3.250 CURRENT 0mA 3.225 200mA/DIV 3.225 3331 G26 8µs/DIV 3.200 BAT = 2.1V, VOUT = 3.3V 3.200 2.1 2.4 2.7 3 3.3 3.6 3.9 4.2 I 1µ 10µ 100µ 1m 10m 100m LOAD = 10mA BB_IN (V) L = 22µH, COUT = 100µF ILOAD (A) 3331 G27 3331 G25
Prioritizer Buck to Buck-Boost Buck Line Regulation, 3.3V Buck Switching Waveforms Transition
3.400 OUTPUT COUT = 100µF OUTPUT VOLTAGE 3.375 L = 22µH VOLTAGE 50mV/DIV 50mV/DIV DC-COUPLED, AC-COUPLED OFFSET = 3.3V 3.350 EH_ON 3.325 5V/DIV LOAD = 1mA SW VOLTAGE 0V (V) 10V/DIV 0V BUCK 3.300 INDUCTOR V OUT LOAD = 100mA CURRENT 3.275 INDUCTOR 200mA/DIV CURRENT 0mA BUCK-BOOST 3.250 200mA/DIV INDUCTOR 0mA CURRENT 0mA 3.225 200mA/DIV 3331 G29 3331 G30 8µs/DIV 100µs/DIV 3.200 VIN = 18V, VOUT = 3.3V VIN TRANSITIONS 18V TO 17V, UV[3:0] = 1110 4 6 8 10 12 14 16 18 ILOAD = 10mA BB_IN = 4.1V, VOUT = 3.3V VIN (V) L = 22µH, COUT = 100µF ILOAD = 50mA, COUT = 100µF, LBUCK = 22µH, 3331 G28 LBUCK-BOOST = 22µH 3331fc For more information www.linear.com/LTC3331 9 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
