Datasheet LTC3525D-3.3 (Analog Devices) - 4

LTC3525D-3.3
Typical perForMance characTerisTics TA = 25°C unless otherwise noted. Maximum Output Current vs VIN Maximum Startup Load vs VIN (for VOUT to Drop 2.5%) (Resistive Load) No-Load Input Current vs VIN
300 250 50 45 250 200 40 35 200 150 30 (mA) 150 (µA) 25 I OUT I IN LOAD (mA) 100 20 100 15 50 10 50 5 0 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 0.5 1.0 1.5 2.0 2.5 3.0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 VIN (V) VIN (V) VIN (V) 3525d33 G01 3525d33 G02 3525d33 G03
Efficiency and Power Loss vs Load Load Regulation Load Regulation
100 100 2.5 2.5 VIN = 1.2V VIN = 2.4V 90 2.0 2.0 1.5 1.5 80 10 POWER LOSS (mW) EFFICIENCY 1.0 1.0 70 (%) (%) OUT 0.5 C 0.5 OUT = 22µF OUT COUT = 22µF 60 1 0 0 POWER LOSS –0.5 COUT = 10µF –0.5 EFFICIENCY (%) 50 COUT = 10µF CHANGE IN V –1.0 CHANGE IN V –1.0 40 0.1 V –1.5 –1.5 IN = 3V 30 VIN = 2.4V –2.0 –2.0 VIN = 1.2V 20 0.01 –2.5 –2.5 0.01 0.1 1 10 100 1000 0 10 20 30 40 50 60 70 80 0 20 40 60 80 100 120 140 160 180 LOAD (mA) LOAD (mA) LOAD (mA) 3525d33 G04 3525d33 G06 3525d33 G07
Light Load Burst Frequency VOUT Variation vs Temperature Start-Up Delay Coming Out of vs Load (Normalized to 25°C) Shutdown
40 0.40 120 35 0.30 100 30 0.20 80 25 (%) 0.10 Y (µs) OUT 20 –0.00 60 COUT = 10µF 15 –0.10 40 CHANGE IN V BURST FREQUENCY (kHz) 10 –0.20 SWITCHING DELA COUT = 22µF 20 5 –0.30 0 –0.40 0 0.1 1 10 –50 –25 0 25 50 75 100 125 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 LOAD (mA) TEMPERATURE (oC) VIN (V) 3525d33 G13 3525d33 G12 3525d33 G14 3525d33fb 4 For more information www.linear.com/LTC3525D3.3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Typical Applications Package Description Revision History Related Parts