Datasheet

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