Datasheet LTC3526L-2, LTC3526LB-2 (Analog Devices) - 4
| Fabricante | Analog Devices |
| Descripción | 550mA 2MHz Synchronous Step-Up DC/DC Converters in 2mm × 2mm DFN |
| Páginas / Página | 16 / 4 — TA = 25°C, unless otherwise noted. Burst Mode Threshold Current. Start-Up … |
| Formato / tamaño de archivo | PDF / 346 Kb |
| Idioma del documento | Inglés |
TA = 25°C, unless otherwise noted. Burst Mode Threshold Current. Start-Up Delay Time vs VIN. vs VIN (LTC3526L-2)
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LTC3526L-2/LTC3526LB-2 Typical perForMance characTerisTics
TA = 25°C, unless otherwise noted. Burst Mode Threshold Current Burst Mode Threshold Current Start-Up Delay Time vs VIN vs VIN (LTC3526L-2) vs VIN (LTC3526L-2)
100 35 40 VOUT = 1.8V LEAVE BURST VOUT = 2.5V 90 C LEAVE BURST C 30 OUT = 10µF 35 OUT = 10µF L = 2.2µH 80 L = 2.2µH 30 70 25 ENTER BURST 60 25 20 ENTER BURST Y (µs) 50 20 DELA 40 15 15 30 LOAD CURRENT (mA) 10 LOAD CURRENT (mA) 10 20 5 10 5 0 0 0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.0 1.2 1.4 1.6 1.8 2.0 2.2 VIN (V) VIN (V) VIN (V) 3526lb2 G07 3526lb2 G08a 3526lb2 G08b
Burst Mode Threshold Current Burst Mode Threshold Current Oscillator Frequency Change vs V vs V vs V IN (LTC3526L-2) IN (LTC3526L-2) OUT
60 70 4 VOUT = 3.3V VOUT = 5V NORMALIZED TO VOUT = 3.3V COUT = 10µF COUT = 10µF 3 50 L = 2.2µH 60 L = 2.2µH 2 50 40 LEAVE BURST LEAVE BURST 1 40 30 0 30 –1 20 ENTER BURST LOAD CURRENT (mA) ENTER BURST LOAD CURRENT (mA) 20 FREQUENCY CHANGE (%) –2 10 10 –3 0 0 –4 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 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) 3526lb2 G08c 3526lb2 G08d 3526lb2 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) 3526lb2 G10 3526lb2 G11 3526lb2 G12 3526lb2fa 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
TA = 25°C, unless otherwise noted. Burst Mode Threshold Current Burst Mode Threshold Current Start-Up Delay Time vs VIN vs VIN (LTC3526L-2) vs VIN (LTC3526L-2)
100 35 40 VOUT = 1.8V LEAVE BURST VOUT = 2.5V 90 C LEAVE BURST C 30 OUT = 10µF 35 OUT = 10µF L = 2.2µH 80 L = 2.2µH 30 70 25 ENTER BURST 60 25 20 ENTER BURST Y (µs) 50 20 DELA 40 15 15 30 LOAD CURRENT (mA) 10 LOAD CURRENT (mA) 10 20 5 10 5 0 0 0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.0 1.2 1.4 1.6 1.8 2.0 2.2 VIN (V) VIN (V) VIN (V) 3526lb2 G07 3526lb2 G08a 3526lb2 G08b
Burst Mode Threshold Current Burst Mode Threshold Current Oscillator Frequency Change vs V vs V vs V IN (LTC3526L-2) IN (LTC3526L-2) OUT
60 70 4 VOUT = 3.3V VOUT = 5V NORMALIZED TO VOUT = 3.3V COUT = 10µF COUT = 10µF 3 50 L = 2.2µH 60 L = 2.2µH 2 50 40 LEAVE BURST LEAVE BURST 1 40 30 0 30 –1 20 ENTER BURST LOAD CURRENT (mA) ENTER BURST LOAD CURRENT (mA) 20 FREQUENCY CHANGE (%) –2 10 10 –3 0 0 –4 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 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) 3526lb2 G08c 3526lb2 G08d 3526lb2 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) 3526lb2 G10 3526lb2 G11 3526lb2 G12 3526lb2fa 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