Datasheet

LTC3412A
5
3412afe
typicAl perForMAnce chArActeristics
Switch On-Resistance
vs Input Voltage
Switch On-Resistance
vs Temperature
Switch Leakage Current
vs Input Voltage
Frequency vs R
OSC
Frequency vs Input Voltage Frequency vs Temperature
Load Step Transient Forced
Continuous Start-Up Transient V
REF
vs Temperature
INPUT VOLTAGE (V)
2.5
ON-RESISTANCE (mΩ)
100
95
90
85
80
75
70
65
60
55
50
4.5
3412A G13
3.0
3.5
4.0
5.0
PFET
NFET
TEMPERATURE (°C)
ON-RESISTANCE (mΩ)
3412A G14
120
100
80
60
40
20
0
–40
0
40
60
–20 20
80
100
120
PFET
NFET
V
IN
= 3.3V
INPUT VOLTAGE (V)
2.5
SWITCH LEAKAGE CURRENT (nA)
3.0
3.5
4.0 4.5
3412A G15
5.0
50
45
40
35
30
25
20
15
10
5
0
5.5
PFET
NFET
R
OSC
(kΩ)
40
FREQUENCY (kHz)
5000
4500
4000
3500
3000
2500
2000
1500
1000
500
0
240
440
540 940
3412A G16
140 340
640
740
840
V
IN
= 3.3V
2.5 4.5
3.0
3.5
4.0
5.55.0
INPUT VOLTAGE (V)
FREQUENCY (kHz)
1060
1050
1040
1030
1020
1010
1000
990
3412A G17
R
OSC
= 294k
TEMPERATURE (°C)
–40
FREQUENCY (kHz)
1020
1015
1010
1005
1000
995
990
985
980
975
970
0
40
60
3412A G18
–20 20
80
100
120
V
IN
= 3.3V
R
OSC
= 294k
TEMPERATURE (°C)
–45
V
REF
(V)
75
0.7975
0.7970
0.7965
0.7960
0.7955
0.7950
0.7945
0.7940
0.7935
0.7930
3412A G12
–25
–5
15 35 55 95
115
V
IN
= 3.3V
3412A G10
40µs/DIV
V
OUT
100mV/DIV
INDUCTOR
CURRENT
2A/DIV
V
IN
= 3.3V
V
OUT
=2.5V
f = 1MHz
LOAD STEP = 0A TO 3A
FIGURE 4 CIRCUIT
3412A G11
1ms/DIV
V
OUT
2V/DIV
RUN/SS
2V/DIV
INDUCTOR
CURRENT
2A/DIV
V
IN
= 3.3V
V
OUT
=2.5V
LOAD STEP = 2A
FIGURE 4 CIRCUIT