Datasheet LTC3409 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | 600mA Low VIN Buck Regulator in 3mm × 3mm DFN |
| Pages / Page | 16 / 5 |
| File Format / Size | PDF / 295 Kb |
| Document Language | English |
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Text Version of Document
LTC3409
TYPICAL PERFORMANCE CHARACTERISTICS (From Typical Application on the front page except for the resistive divider resistor values) Oscillator Frequency Oscillator Frequency Shift Output Voltage vs Load Current vs Temperature vs Input Voltage VIN = 1.6V
2.70 6 1.22 2.60 VIN = 2.7V 4 2.50 fLOW 2.40 T (%) V 1.7MHz IN = 1.6V 2 1.21 2.30 VIN = 4.2V 2.20 OSC 2.6MHz 1.2V 0 OUT 2.10 fHIGH BURST 2.00 2.6MHz –2 1.20 1.90 OSC 1.7MHz 1.2VOUT 1.80 VIN = 4.2V TOR FREQUENCY (MHz) –4 PULSE 1.70 TOR FREQUENCY SHIF SKIP 1.60 OUTPUT VOLTAGE (V) –6 1.19 VIN = 2.7V OSCILLA 1.50 VIN = 1.6V 1.40 OSCILLA –8 1.30 1.20 –10 1.18 –50 –25 0 25 50 75 100 125 1.5 2.5 3.5 4.5 5.5 0 100 200 300 400 500 600 700 800 900 TEMPERATURE (°C) INPUT VOLTAGE (V) LOAD CURRENT (mA) 3409 G07 3409 G08 3409 G09
Dynamic Input Current RDS(ON) vs Input Voltage RDS(ON) vs Input Temperature vs Input Voltage
DYNAMIC SUPPLY CURRENT, BURST/SLEEP (μA) 0.450 0.55 6000 80 MAIN SWITCH BURST/SLEEP 0.400 0.50 VOUT = 1.5V 1.6V 70 5000 IOUT = 0 0.350 MAIN 0.45 VFB = VIN SWITCH 60 4.2V 0.300 0.40 4000 2.7V 1.6V 50 (Ω) 0.250 (Ω) 0.35 3000 40 0.200 0.30 V DS(0N) DS(ON) OUT = 1.5V R SYNCHRONOUS 2.7V R IOUT = 0 30 0.150 SWITCH 0.25 2000 4.2V 20 0.100 0.20 PULSE 1000 SKIP V 0.050 0.15 FB = 0 10 SYNCHRONOUS SWITCH 0 0.10 DYNAMIC SUPPLY CURRENT, PULSE SKIP (μA) 0 0 1.5 2.5 3.5 4.5 5.5 –50 –25 0 25 50 75 100 125 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 INPUT VOLTAGE (V) TEMPERATURE (°C) INPUT VOLTAGE (V) 3409 G10 3409 G11 3409 G12
Dynamic Supply Current vs Temperature, VIN = 3.6V, Switch Leakage vs Temperature VOUT = 1.5V, 0 Load VIN = 5.5V Switch Leakage vs Input Voltage
500 6000 45 VIN = 5.5V 450 40 5000 400 35 PULSE SKIP 350 4000 30 300 25 250 3000 MAIN SWITCH MAIN SWITCH 20 200 2000 15 150 SWITCH LEAKAGE (nA) SWITCH LEAKAGE (nA) SYNCHRONOUS SWITCH 10 100 BURST DYNAMIC SUPLLY CURRENT (μA) 1000 SYNCHRONOUS 50 5 SWITCH 0 0 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 0 2 4 6 8 TEMPERATURE (°C) TEMPERATURE (°C) INPUT VOLTAGE (V) 3409 G13 3409 G14 3409 G15 3409fc 5
TYPICAL PERFORMANCE CHARACTERISTICS (From Typical Application on the front page except for the resistive divider resistor values) Oscillator Frequency Oscillator Frequency Shift Output Voltage vs Load Current vs Temperature vs Input Voltage VIN = 1.6V
2.70 6 1.22 2.60 VIN = 2.7V 4 2.50 fLOW 2.40 T (%) V 1.7MHz IN = 1.6V 2 1.21 2.30 VIN = 4.2V 2.20 OSC 2.6MHz 1.2V 0 OUT 2.10 fHIGH BURST 2.00 2.6MHz –2 1.20 1.90 OSC 1.7MHz 1.2VOUT 1.80 VIN = 4.2V TOR FREQUENCY (MHz) –4 PULSE 1.70 TOR FREQUENCY SHIF SKIP 1.60 OUTPUT VOLTAGE (V) –6 1.19 VIN = 2.7V OSCILLA 1.50 VIN = 1.6V 1.40 OSCILLA –8 1.30 1.20 –10 1.18 –50 –25 0 25 50 75 100 125 1.5 2.5 3.5 4.5 5.5 0 100 200 300 400 500 600 700 800 900 TEMPERATURE (°C) INPUT VOLTAGE (V) LOAD CURRENT (mA) 3409 G07 3409 G08 3409 G09
Dynamic Input Current RDS(ON) vs Input Voltage RDS(ON) vs Input Temperature vs Input Voltage
DYNAMIC SUPPLY CURRENT, BURST/SLEEP (μA) 0.450 0.55 6000 80 MAIN SWITCH BURST/SLEEP 0.400 0.50 VOUT = 1.5V 1.6V 70 5000 IOUT = 0 0.350 MAIN 0.45 VFB = VIN SWITCH 60 4.2V 0.300 0.40 4000 2.7V 1.6V 50 (Ω) 0.250 (Ω) 0.35 3000 40 0.200 0.30 V DS(0N) DS(ON) OUT = 1.5V R SYNCHRONOUS 2.7V R IOUT = 0 30 0.150 SWITCH 0.25 2000 4.2V 20 0.100 0.20 PULSE 1000 SKIP V 0.050 0.15 FB = 0 10 SYNCHRONOUS SWITCH 0 0.10 DYNAMIC SUPPLY CURRENT, PULSE SKIP (μA) 0 0 1.5 2.5 3.5 4.5 5.5 –50 –25 0 25 50 75 100 125 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 INPUT VOLTAGE (V) TEMPERATURE (°C) INPUT VOLTAGE (V) 3409 G10 3409 G11 3409 G12
Dynamic Supply Current vs Temperature, VIN = 3.6V, Switch Leakage vs Temperature VOUT = 1.5V, 0 Load VIN = 5.5V Switch Leakage vs Input Voltage
500 6000 45 VIN = 5.5V 450 40 5000 400 35 PULSE SKIP 350 4000 30 300 25 250 3000 MAIN SWITCH MAIN SWITCH 20 200 2000 15 150 SWITCH LEAKAGE (nA) SWITCH LEAKAGE (nA) SYNCHRONOUS SWITCH 10 100 BURST DYNAMIC SUPLLY CURRENT (μA) 1000 SYNCHRONOUS 50 5 SWITCH 0 0 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 0 2 4 6 8 TEMPERATURE (°C) TEMPERATURE (°C) INPUT VOLTAGE (V) 3409 G13 3409 G14 3409 G15 3409fc 5
