Datasheet

LTC3531/
LTC3531-3.3/LTC3531-3
4
3531fa
T
A
= 25°C unless otherwise specifi ed.
TYPICAL PERFOR A CE CHARACTERISTICS
UW
V
IN
(V)
1
FREQUENCY (kHz)
10
1000
1.5 3.53 4.54 5.55
3531 G08
0.1
2.52
100
0.5mA
1mA
5mA
10mA
50mA
TEMPERATURE (°C)
–40
3.250
V
OUT
(V)
3.275
3.300
3.325
3.350
–20 0 20 40
3531 G09
60 80 100
TEMPERATURE (°C)
–40
400
R
DSON
(mΩ)
500
600
700
800
1000
–20
02040
3531 G10
60 80 100
900
D (PMOS)
A (PMOS)
B,C (NMOS)
TEMPERATURE (°C)
–40
CURRENT (mA)
150
200
250
20
60
3531 G11
100
50
0
–20 0 40
300
350
400
80 100
TEMPERATURE (°C)
–40
0.5
VOLTAGE (V)
0.6
0.7
0.8
0.9
1
–20
02040
3531 G12
60 80 100
L = 10µH
C
OUT
= 10µF
V
IN
= 5V
V
OUT
= 3.3V
I
ZERO
I
PEAK
I
VALLEY
2.5V
IN
3.3V
OUT
10µH
SHUTDOWN
OPERATING
V
IN
(V)
1.5
10
R
MIN
(Ω)
12
16
18
20
30
24
2.5
3.5
4
3531 G07
14
26
28
22
23
4.5
5
5.5
V
IN
= 3.6V
I
LOAD
= 10mA
Start-Up into Resistive Load
L = 10µH
Burst Frequency vs Load
(3.3V Version)
V
OUT
Regulation vs Temperature
(3.3V Version)
Switch On Resistances I
PEAK
, I
VALLEY
vs Temperature
SHDN Pin Threshold and
Hysteresis