Datasheet LTC3526L, LTC3526LB (Analog Devices) - 4

LTC3526L/LTC3526LB typicAl perForMAnce chArActeristics
Burst Mode Threshold Current Burst Mode Threshold Current Start-Up Delay Time vs VIN vs VIN (LTC3526L) vs VIN (LTC3526L)
100 30 30 V V 90 OUT = 1.8V OUT = 2.5V C LEAVE BURST LEAVE BURST OUT = 10µF COUT = 10µF 80 25 L = 4.7µH 25 L = 4.7µH 70 20 20 60 ENTER BURST ENTER BURST Y (µs) 50 15 15 DELA 40 30 10 10 LOAD CURRENT (mA) LOAD CURRENT (mA) 20 5 5 10 0 0 0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 1.0 1.25 1.5 1.0 1.25 1.5 1.75 2.0 VIN (V) VIN (V) VIN (V) 3526l G07 3526l G08a 3526l G08b
Burst Mode Threshold Current Burst Mode Threshold Current Oscillator Frequency Change vs VIN (LTC3526L) vs VIN (LTC3526L) vs VOUT
40 50 3 VOUT = 3.3V VOUT = 5V NORMALIZED TO VOUT = 3.3V 35 COUT = 10µF LEAVE BURST COUT = 10µF L = 4.7µH 40 L = 4.7µH 2 30 LEAVE BURST 1 25 30 20 0 15 ENTER BURST 20 ENTER BURST –1 LOAD CURRENT (mA) LOAD CURRENT (mA) 10 FREQUENCY CHANGE (%) 10 –2 5 0 0 –3 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 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 VIN (V) VIN (V) VOUT (V) 3526l G08c 3526l G08d 3526l G09
Oscillator Frequency Change RDS(ON) vs VOUT vs Temperature RDS(ON) Change vs Temperature
0.90 10 1.3 NORMALIZED TO 25°C NORMALIZED TO 25°C 0.85 8 0.80 1.2 6 0.75 0.70 4 1.1 DS(ON) 2 (Ω) 0.65 PMOS 0.60 0 1.0 R DS(ON) 0.55 –2 0.50 0.9 –4 NORMALIZED R 0.45 FREQUECNY CHANGE (%) NMOS 0.40 –6 0.8 0.35 –8 0.30 –10 0.7 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 –50 –30 –10 10 30 50 70 90 –50 –30 –10 10 30 50 70 90 VOUT (V) TEMPERATURE (°C) TEMPERATURE (°C) 3526l G10 3526l G11 3526l G12 3526lfc Document Outline Features Applications Description 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