LTC3604 Datasheet, PDF (5/24 Pages) Linear Technology – 2.5A, 15V Monolithic Synchronous Step-Down Regulator

LTC3604
TYPICAL PERFORMANCE CHARACTERISTICS
T_A = 25°C, V_IN = 12V, f_O = 1MHz, L = 1.5μH unless otherwise noted.
R_DS(ON) vs Temperature
200
160
TOP SWITCH
R_DS(ON)
120
BOTTOM SWITCH
80
R_DS(ON)
40
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3604 G07
Switch Leakage vs Temperature
6000
V_DS = 12V
5000
4000
3000
2000
1000
TOP SWITCH
BOTTOM SWITCH
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3604 G08
Quiescent Current vs
Supply Voltage
380
340
300
260
220
4
6
8 10 12 14 16
SUPPLY VOLTAGE (V)
3604 G09
Oscillator Frequency vs
Temperature
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3604 G10
Oscillator Internal Set Frequency
vs Temperature
2.75
RT = INTV_CC
2.50
2.25
2.00
1.75
1.50
1.25
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3604 G11
TRACK Pull-Up Current
vs Temperature
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3604 G12
Bottom Switch Valley Current
Limit vs Temperature
5
4
3
2
1
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3604 G13
Load Regulation
1.4
Burst Mode OPERATION
1.2
FORCED CONTINUOUS
1.0
0.8
0.6
0.4
0.2
0
–0.2
0
0.5
1
1.5
LOAD CURRENT (A)
2
2.5
3604 G14
3604f
5