Datasheet LTC4040 (Analog Devices) - 8

LTC4040
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. Back–Up Boost Output V Back-Up Boost Output Voltage Backup Boost Oscillator (VSYS (V ) vs Temperature Frequency vs Temperature SYS) vs Temperature Frequency vs T
5.10 1.15 5.00 1.10 4.90 1.05 (V) 4.80 V SYS 1.00 VBAT = 4.1V 4.70 FREQUENCY (MHz) VBAT = 3.6V VSYS = Set to 5V VBAT = 2.7V VBAT = 3.6V 0.95 4.60 VSYS = 5V ISYS = 1mA 4.50 0.90 –45 –10 25 60 95 130 –45 –10 25 60 95 130 TEMPERATURE (°C) TEMPERATURE (°C) 4040 G16 4040 G17
Backup Boost Maximum Backup Boost Maximum Backup Boost Efficiency Backup Boost Efficiency Duty Cycle vs Temperature Duty Cycle vs T vs Load Current
90 100 VBAT = 3.6V 90 88 80 70 86 60 50 Y CYCLE (%) 84 40 EFFICIENCY (%) 30 MAX DUT VSYS SET TO 5V 82 20 VBAT = 3.2V VBAT = 3.7V 10 VBAT = 4.1V 80 0 –45 –10 25 60 95 130 1 10 100 1k 3k TEMPERATURE (°C) LOAD CURRENT (mA) 4040 G18 4040 G19
Backup Boost NMOS RDS(ON) Backup Boost NMOS On-Resistance Backup Boost PMOS RDS(ON) Backup Boost PMOS On-Resistance SLEEP Mode (Backup) SLEEP Mode (Backup) vs VSYS vs V over T SYS emperature over T vs VSYS vs V over T SYS emperature over T IBA I TQ BA vs T TQ emperature vs T
110 110 45 130°C 100 100 130°C 90°C 40 90 90 60°C 90°C 80 25°C ANCE (mΩ) 80 35 60°C ANCE (mΩ) –10°C 70 CURRENT (µA) RESIST 25°C 70 RESIST –45°C VBAT = 4.1V 30 V –10°C BAT = 3.6V 60 60 VBAT = 2.7V –45°C 50 50 25 3.5 3.8 4.1 4.4 4.7 5.0 3.5 3.8 4.1 4.4 4.7 5.0 –45 –10 25 60 95 130 VSYS (V) VSYS (V) TEMPERATURE (°C) 4040 G20 4040 G21 4040 G22 4040fb 8 For more information www.linear.com/LTC4040 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 Typical Application Package Description Revision History Typical Application Related Parts