Datasheet

LTC3443
4
3443fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Active Quiescent Current
TEMPERATURE (°C)
–55
520
V
IN
+ V
OUT
CURRENT (μA)
540
560
580
600
–25 5 35 65
3443 G07
95 125
620
530
550
570
590
610
630
V
IN
= V
OUT
= 3.6V
TEMPERATURE (°C)
–55
FEEDBACK VOLTAGE (V)
65
1.241
3443 G08
5
–25
95
35 125
1.236
1.231
1.226
1.221
1.216
1.211
1.206
1.201
1.196
V
IN
= V
OUT
= 3.6V
TEMPERATURE (°C)
–55
10
V
IN
+ V
OUT
CURRENT (μA)
20
30
40
50
–25 5 35 65
3443 G09
95 125
V
IN
= V
OUT
= 3.6V
Feedback Voltage
Burst Mode Quiescent Current
Feedback Voltage Line Regulation Error Amp Source Current
TEMPERATURE (°C)
–55
60
LINE REGULATION (dB)
70
80
90
–25 5 35 65
3443 G10
95
125
V
IN
= V
OUT
= 2.4V TO 5.5V
TEMPERATURE (°C)
–55
5
EA SOURCE CURRENT (μA)
10
15
20
–25 5 35 65
3443 G11
95
125
V
IN
= V
OUT
= 3.6V
Switch Pins Before Entering
Boost Mode
SW1
2V/DIV
V
IN
= 3V 50ns/DIV 3443 G06
V
OUT
= 3.3V
I
OUT
= 500mA
SW2
2V/DIV
(T
A
= 25°C unless otherwise specified)
Switch Pins in Buck-Boost Mode
SW1
2V/DIV
V
IN
= 3.3V 50ns/DIV 3443 G04
V
OUT
= 3.3V
I
OUT
= 500mA
SW2
2V/DIV
SW1
2V/DIV
V
IN
= 4.2V 50ns/DIV 3443 G05
V
OUT
= 3.3V
I
OUT
= 500mA
SW2
2V/DIV
Switch Pins Entering
Buck-Boost Mode