Datasheet LTC3100 (Analog Devices) - 8

LTC3100
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise specified. Step-Down DC/DC Converter Efficiency vs Load Current and VIN Efficiency vs Load Current and VIN for VO = 1.2V for VO = 1.8V
100 1000 100 1000 90 90 80 100 80 100 POWER LOSS (mW) POWER LOSS (mW 70 70 60 10 60 10 50 50 40 1 40 1 EFFICIENCY (%) VIN = 1.8V EFFICIENCY (%) VIN = 2.4V 30 ) V 30 IN = 2.4V VIN = 3.3V V 20 VIN = 3.3V 0.1 20 IN = 5V 0.1 PL, VIN = 1.8V PL, VIN = 2.4V 10 PL, VIN = 2.4V 10 PL, VIN = 3.3V PL, V PL, VIN = 5V 0 IN = 3.3V 0.01 0 0.01 0.01 0.1 1 10 100 1000 0.01 0.1 1 10 100 1000 LOAD CURRENT (mA) LOAD CURRENT (mA) 3100 G19 3100 G20
No-Load Input Current Burst Mode Operation Threshold vs VINBK (Mode = Open) Current vs VIN VOUT and IIN During Soft-Start
20 80 STARTUP, 200mA LOAD 70 VIN = 2.4V VOUT = 1.2V VOUT = 1.2V 15 60 COUT = 10µF INPUT 50 CURRENT 50mA/DIV 10 40 VOUT = 1.5V 30 VOUT INPUT CURRENT (µA) LOAD CURRENT (mA) 5 0.5V/DIV 20 VOUT = 1.8V 3100 G23 10 VOUT = 2.5V 2ms/DIV 0 0 1.5 2 2.5 3 3.5 4 4.5 5 2 2.5 3 3.5 4 4.5 5 VINBK (V) VINBK (V) 3100 G21 3100 G22
Load Step Response, Load Step Response, Output Voltage Ripple in Fixed Fixed Frequency Mode Burst Mode Operation Enabled Frequency and Burst Mode Operation 10mA to 100mA 10mA to 100mA
COUT = 10µF COUT = 10µF COUT = 10µF 100mA/DIV 50mV/DIV 50mA/DIV 50mV/DIV 50mV/DIV 50mV/DIV 3100 G24 5µs/DIV 3100 G25 200µs/DIV 3100 G26 200µs/DIV 3100fb 8 For more information www.linear.com/LTC3100 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts