Datasheet LTC3607 (Analog Devices) - 4

LTC3607
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. Efficiency vs Load Current Efficiency vs Load Current Burst Mode Operation Burst Mode Operation Efficiency vs Load Current
100 100 100 VOUT = 2.5V VOUT = 3.3V VIN = 8.4V 90 90 90 VOUT = 5V 80 80 80 70 70 70 60 60 60 50 50 50 40 40 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 30 30 30 20 V 20 20 IN = 5V VIN = 5V 10 VIN = 8.4V 10 VIN = 8.4V 10 Burst Mode OPERATION VIN = 12V VIN = 12V PULSE SKIP 0 0 0 0.1 1 10 100 1000 0.1 1 10 100 1000 0.1 1 10 100 1000 LOAD CURRENT (mA) LOAD CURRENT (mA) LOAD CURRENT (mA) 3607 G01 3607 G02 3607 G03
Efficiency vs Input Voltage Burst Mode Operation Burst Mode Operation Pulse-Skipping Mode
100 VOUT = 3.3V 95 90 SW SW 5V/DIV 5V/DIV 85 V V 80 OUT OUT 50mV/DIV 50mV/DIV 75 70 I I EFFICIENCY (%) L L 65 200mA/DIV 200mA/DIV I 60 LOAD = 1mA ILOAD = 10mA 3607 G05 2µs/DIV 3607 G06 2µs/DIV 55 ILOAD = 100mA I V V LOAD = 600mA IN = 8.4V IN = 8.4V 50 VOUT = 2.5V VOUT = 2.5V 4 6 8 10 12 14 16 ILOAD = 100mA ILOAD = 20mA INPUT VOLTAGE (V) 3607 G04
Load Step in Burst Mode VOUT Short to GND (Burst Mode Operation Start-Up (Burst Mode Operation) Operation)
PGOOD RUN 2V/DIV VOUT 2V/DIV 100mV/DIV V PGOOD OUT 1V/DIV 2V/DIV VOUT 2V/DIV IL 200mA/DIV IL IL 0.5A/DIV 1A/DIV 3607 G07 20µs/DIV 3607 G08 200µs/DIV 3607 G09 100µs/DIV VIN = 8.4V VIN = 8.4V VIN = 8.4V VOUT = 2.5V VOUT = 2.5V VOUT = 2.5V ILOAD = 30mA TO 600mA ILOAD = 20mA ILOAD = 0A 3607fb 4 For more information www.linear.com/LTC3607 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 Revision History Typical Application Related Parts