LTC3414 Datasheet, PDF (3/16 Pages) Linear Technology – 4A, 4MHz, Monolithic Synchronous Step-Down Regulator

LTC3414
TYPICAL PERFOR A CE CHARACTERISTICS
V_REF vs Temperature, V_IN = 3.3V
0.800
0.799
0.798
0.797
0.796
0.795
–40 –20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
3414 G01
Switch Leakage vs Input Voltage
20
T_A = 25°C
18
16
14
PFET
12
10
8
6
NFET
4
2
0
2.25 2.75 3.25 3.75 4.25 4.75 5.25
INPUT VOLTAGE (V)
3414 G04
Frequency vs Temperature
1090
V_IN = 3.3V
1070 R_OSC = 294k
1050
1030
1010
990
970
950
930
910
–40 –20
0 20 40 60 80 100 120
TEMPERATURE (°C)
3414 G07
Switch On-Resistance vs
Input Voltage
90
80
70
PFET
T_A = 25°C
60
50
NFET
40
30
20
10
0
2.25 2.75 3.25 3.75 4.25 4.75 5.25 5.75
INPUT VOLTAGE (V)
3414 G02
Frequency vs R_OSC
7000
6000
V_IN = 3.3V
T_A = 25°C
5000
4000
3000
2000
1000
0
25 125 225 325 425 525 625 725 825 925
R_OSC (k)
3414 G05
DC Supply Current vs Input
Voltage
350
T_A = 25°C
300
ACTIVE
250
200
150
100
SLEEP
50
0
2.25 2.75 3.25 3.75 4.25 4.75 5.25
INPUT VOLTAGE (V)
3414 G08
Switch On-Resistance vs
Temperature, V_IN = 3.3V
120
100
80
PFET
60
NFET
40
20
0
–40–25 –10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
3414 G03
Frequency vs Input Voltage
1040
1020
R_OSC = 294k
T_A = 25°C
1000
980
960
940
920
900
2.25 2.75 3.25 3.75 4.25 4.75 5.25
INPUT VOLTAGE (V)
3414 G06
Minimum Peak Inductor Current
vs Burst Clamp Voltage
5.0
V_IN = 3.3V
4.5 _{TA = 25°C}
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
BURST CLAMP VOLTAGE (V)
3414 G09
3414f
3