LTC3412
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Switch On-Resistance
vs Temperature
Switch Leakage vs Input Voltage
Frequency vs ROSC
120
110
100
90
2.5
2.0
1.5
1.0
0.5
0
4500
4000
3500
3000
2500
2000
1500
1000
500
V
IN
= 3.3V
V
= 3.3V
IN
PFET ON-RESISTANCE
NFET ON-RESISTANCE
80
70
60
50
SYNCHRONOUS SWITCH
MAIN SWITCH
40
30
20
–40 –20
0
0
20 40 60 80 100 120
TEMPERATURE (°C)
2.5
3
3.5
4
4.5
5
5.5
50 150 250 350 450 550 650 750 850 950
(kΩ)
INPUT VOLTAGE (V)
R
OSC
3412 G13
3412 G14
3412 G15
Switching Frequency
vs Temperature
DC Supply Current
vs Input Voltage
Frequency vs Input Voltage
1050
1040
1030
1020
1010
1000
990
1010
1008
1006
1004
1002
1000
998
350
300
250
200
150
100
50
R = 309k
V
= 3.3V
IN
ACTIVE
996
994
992
SLEEP
990
2.5
3
3.5
4
4.5
5
5.5
–40 –20
0
20 40 60 80 100 120
2.5
3
3.5
4
4.5
5
5.5
INPUT VOLTAGE (V)
TEMPERATURE (°C)
INPUT VOLTAGE (V)
3412 G16
3412 G17
3412 G18
Minimum Peak Inductor Current
vs Burst Clamp Voltage
DC Supply Current vs Temperature
Current Limit vs Input Voltage
4000
3500
3000
2500
2000
1500
1000
500
350
300
250
200
150
100
50
6.8
6.6
6.4
6.2
6.0
5.8
5.6
5.4
V
= 3.3V
V
= 3.3V
IN
IN
ACTIVE
SLEEP
0
0
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
BURST CLAMP VOLTAGE (V)
1
4.75
INPUT VOLTAGE (V)
2.75
3.25
3.75
4.25
5.25
–40 –20
0
20 40 60 80 100 120
TEMPERATURE (°C)
3412 G20
3412 G21
3412 G19
3412fb
5
Linear [ Linear ]
