LTC3615 Datasheet, PDF (7/32 Pages) Linear Technology – Dual 4MHz, 3A Synchronous Step-Down DC/DC Converter

LTC3615
Typical Performance Characteristics V_IN = 3.3V, R_T/SYNC = SV_IN, unless otherwise noted.
Reference Voltage
vs Temperature
0.606
0.604
0.602
0.600
0.598
0.596
0.594
–50 –30 –10 10 30 50 70 90 110 130
TEMPERATURE (°C)
3615 G18
Switch On-Resistance
vs Input Voltage
0.10
0.09
0.08
MAIN SWITCH
0.07
0.06
0.05
SYNCHRONOUS SWITCH
0.04
0.03
0.02
0.01
0
2.25
3.25
4.25
V_IN (V)
5.25
3615 G19
Switch On-Resistance
vs Temperature
100
90
MAIN SWITCH
80
70
60
50
SYNCHRONOUS SWITCH
40
30
20
10
0
–40 –25 –10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
3615 G20
Frequency vs R_T/SYNC
4.0
3.6
3.2
2.8
2.4
2.0
1.6
1.2
0.8
0.4
0
100 200 300 400 500 600 700 800 900 1000
R_T/SYNC (kΩ)
3615 G22
Frequency vs Temperature
2.7
2.6
2.5
2.4
2.3
R_T /SYNC = SV_IN
2.2
R_T = 178k
2.1
2.0
1.9
1.8
–40 –25 –10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
3615 G23
Frequency vs Input Voltage
2.60
2.50
2.40
2.30
R_T/SYNC = SV_IN
2.20
2.10
R_T/SYNC = 200k
2.00
1.90
1.80
1.70
1.60
2.25
3.00
3.75
4.50
V_IN (V)
5.25
3615 G24
3615f