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