Datasheet LTC3545, LTC3545-1 (Analog Devices) - 6
| Manufacturer | Analog Devices |
| Description | Triple 800mA Synchronous Step-Down Regulator - 2.25MHz |
| Pages / Page | 20 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. Start-Up From Shutdown. Loaded. No … |
| File Format / Size | PDF / 305 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. Start-Up From Shutdown. Loaded. No Load. Load Step Crosstalk. PFET RDS(ON) vs Supply Voltage
Model Line for this Datasheet
Text Version of Document
LTC3545/LTC3545-1
TYPICAL PERFORMANCE CHARACTERISTICS Start-Up From Shutdown Start-Up From Shutdown Loaded No Load Load Step Crosstalk
VOUT2 2mV/DIV VOUT1 VOUT1 V 1V/DIV VOUT3 OUT2 V 2mV/DIV OUT2 VOUT3 1V/DIV (ALL 1V/DIV) V V OUT3 OUT1 RUNX 1V/DIV 100mV/DIV 5V/DIV ILOAD CH1 I ISUPPLY SUPPLY 50mA/DIV 1A/DIV 50mA/DIV 3545 G13 3545 G14 3545 G15 T 200μs/DIV T 200μs/DIV T 200μs/DIV A = 25°C A = 25°C A = 25°C V V V IN = 3.6V IN = 3.6V IN = 3.6V I I 500mA LOAD STEP IN CHANNEL1 LOAD = 600mA, ALL CHANNELS LOAD = 0, ALL CHANNELS CHANNELS 2 AND 3 LOADED AT 400mA EACH
PFET RDS(ON) vs Supply Voltage PFET RDS(ON) vs Temperature
0.60 0.50 0.45 0.50 0.40 0.35 0.40 0.30 (Ω) (Ω) 0.30 0.25 DS(ON) DS(ON) R R 0.20 0.20 T 0.15 A = 125°C TA = 80°C 0.10 0.10 TA = 25°C VIN = 2.5V TA = 0°C 0.05 VIN = 3.5V TA = –40°C VIN = 5.5V 0 0 2 3 4 5 6 –40 10 60 110 SUPPLY VOLTAGE (V) TEMPERATURE (°C) 3545 G16 3545 G17
NFET RDS(ON) vs Supply Voltage NFET RDS(ON) vs Temperature
0.60 0.50 0.45 0.50 0.40 0.35 0.40 0.30 (Ω) (Ω) 0.30 0.25 DS(ON) DS(ON) R R 0.20 0.20 T 0.15 A = 125°C TA = 80°C 0.10 0.10 TA = 25°C VIN = 2.5V TA = 0°C 0.05 VIN = 3.5V TA = –40°C VIN = 5.5V 0 0 2 3 4 5 6 –40 10 60 110 SUPPLY VOLTAGE (V) TEMPERATURE (°C) 3545 G18 3545 G19 35451fb 6
TYPICAL PERFORMANCE CHARACTERISTICS Start-Up From Shutdown Start-Up From Shutdown Loaded No Load Load Step Crosstalk
VOUT2 2mV/DIV VOUT1 VOUT1 V 1V/DIV VOUT3 OUT2 V 2mV/DIV OUT2 VOUT3 1V/DIV (ALL 1V/DIV) V V OUT3 OUT1 RUNX 1V/DIV 100mV/DIV 5V/DIV ILOAD CH1 I ISUPPLY SUPPLY 50mA/DIV 1A/DIV 50mA/DIV 3545 G13 3545 G14 3545 G15 T 200μs/DIV T 200μs/DIV T 200μs/DIV A = 25°C A = 25°C A = 25°C V V V IN = 3.6V IN = 3.6V IN = 3.6V I I 500mA LOAD STEP IN CHANNEL1 LOAD = 600mA, ALL CHANNELS LOAD = 0, ALL CHANNELS CHANNELS 2 AND 3 LOADED AT 400mA EACH
PFET RDS(ON) vs Supply Voltage PFET RDS(ON) vs Temperature
0.60 0.50 0.45 0.50 0.40 0.35 0.40 0.30 (Ω) (Ω) 0.30 0.25 DS(ON) DS(ON) R R 0.20 0.20 T 0.15 A = 125°C TA = 80°C 0.10 0.10 TA = 25°C VIN = 2.5V TA = 0°C 0.05 VIN = 3.5V TA = –40°C VIN = 5.5V 0 0 2 3 4 5 6 –40 10 60 110 SUPPLY VOLTAGE (V) TEMPERATURE (°C) 3545 G16 3545 G17
NFET RDS(ON) vs Supply Voltage NFET RDS(ON) vs Temperature
0.60 0.50 0.45 0.50 0.40 0.35 0.40 0.30 (Ω) (Ω) 0.30 0.25 DS(ON) DS(ON) R R 0.20 0.20 T 0.15 A = 125°C TA = 80°C 0.10 0.10 TA = 25°C VIN = 2.5V TA = 0°C 0.05 VIN = 3.5V TA = –40°C VIN = 5.5V 0 0 2 3 4 5 6 –40 10 60 110 SUPPLY VOLTAGE (V) TEMPERATURE (°C) 3545 G18 3545 G19 35451fb 6
