Datasheet

LTC3447
5
3447f
FB
(V)
618
612
606
600
594
588
582
V
FB
(V)
610
605
600
595
590
PULSE SKIP MODE
BURST MODE OPERATION
V
OUT
V
OUT
INDUCTOR CURRENT
INDUCTOR CURRENT
V
OUT
V
OUT
INDUCTOR CURRENT
LOAD CURRENT
PGOODPGOOD
PGOOD
3447 G16 3447 G17 3447 G18
100µs/DIV 100µs/DIV
3447 G15
40µs/DIV
200µs/DIV
50mV/DIV
200mA/DIV
SUPPLY VOLTAGE (V)
2.5 3.5
4.5
5.5
3447 G10
SUPPLY VOLTAGE (V)
2.5 3.5
4.5
5.5
3447 G12
TEMPERATURE (°C)
–40 –20 0 20 40 60 80 100 120
3447 G11
SUPPLY VOLTAGE (V)
2.5 3.5
4.5
5.5
3447 G13
TEMPERATURE (°C)
–40 –20 0 20 40 60 80 100 120
3447 G15
R
DS(ON)
(Ω)
0.60
0.55
0.50
0.45
0.40
0.35
0.30
0.25
0.20
R
DS(ON)
(Ω)
0.60
0.55
0.50
0.45
0.40
0.35
0.30
0.25
0.20
V
OUTMAX
(V)
V
OUTMIN
(V)
2.060
2.055
2.050
2.045
2.040
2.035
2.030
2.025
2.020
0.720
0.715
0.710
0.705
0.700
0.695
0.690
0.685
0.680
DAC = MAX
DAC = MIN
PFET
NFET
PFET
NFET
500mV/DIV 500mV/DIV
5V/DIV
200mA/DIV
500mV/DIV
5V/DIV
200mA/DIV
500mV/DIV
5V/DIV
100mA/DIV
V
IN
= 3.6V
TYPICAL PERFOR A CE CHARACTERISTICS
UW
R
DS(ON)
vs Supply Voltage R
DS(ON)
vs Temperature Output Voltage vs Supply Voltage
Feedback Reference vs Supply
Voltage
Feedback Voltage vs
Temperature Load Step (200mA to 400mA)
Soft-Start with No Load V
OUT(MIN)
to V
OUT(MAX)
Transition V
OUT(MAX)
to V
OUT(MIN)
Transition