LTC3531-3 Linear Technology, LTC3531-3 Datasheet - Page 3

• Manufacturer Part Number: LTC3531-3
• Description: Buck-Boost Synchronous DC/DC Converters
• Manufacturer: Linear Technology

www.DataSheet4U.com
temperature range, otherwise specifi cations are at T
PARAMETER
PMOS D R
PMOS D R
Peak Current Limit
⎯ S ⎯ H ⎯ D ⎯ N
⎯ S ⎯ H ⎯ D ⎯ N Input Threshold
⎯ S ⎯ H ⎯ D ⎯ N Hysteresis
⎯ S ⎯ H ⎯ D ⎯ N Leakage Current
TYPICAL PERFOR
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
100
350
300
250
200
150
100
180
160
140
120
60
40
50
80
20
0
0
1.5
1.5
Maximum I
(3.3V Version)
I
IN
L = 10µH
V
DSON
DSON
OUT
Short Circuit vs V
2
2
= 3.3V
(3.3V Version)
(3V Version)
2.5
2.5
OUT
3
3
V
V
vs V
IN
IN
3.5
3.5
(V)
(V)
IN
IN
4
4
W
4.5
4.5
A
5
5
3531 G01
3531 G04
U
5.5
5.5
CE CHARACTERISTICS
300
250
150
100
450
400
350
200
100
50
90
80
70
60
50
40
30
20
10
0
0
1.5
A
1.5
I
V
(3.3V Version)
= 25°C. V
PEAK
L = 10µH
OUT
CONDITIONS
V
V
L = 10μH, V
V
OUT
OUT
⎯ S ⎯ H ⎯ D ⎯ N
2
2
, I
Ripple vs C
The
VALLEY
= 3.1V
= 2.8V
2.5
2.5
●
IN
denotes the specifi cations which apply over the full operating
= 3.6V V
3
IN
, I
3
V
V
ZERO
= 5V
IN
IN
3.5
3.5
I
Continuous operation above the specifi ed maximum operating junction
temperature may result in device degradation or failure.
Note 3: The LTC3531 is guaranteed to meet performance specifi cations
from 0°C to 70°C. Specifi cations over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
ZERO
OUT
(V)
(V)
10µF
vs V
22µF
I
OUT
4
VALLEY
4
I
IN
PEAK
4.5
4.5
= 3.3V unless otherwise noted.
50mA LOAD
LTC3531-3.3/LTC3531-3
5
5
3531 G02
3531 G05
T
A
5.5
5.5
= 25°C unless otherwise specifi ed.
3.40
3.35
3.30
3.25
3.20
3.15
12
20
18
16
14
10
0
8
6
4
2
0.1
1.5
Sleep Currents
Load Regulation vs C
(3.3V Version)
V
IN
MIN
295
0.4
22µF
= 3.6V
2
2.5
1
LOAD CURRENT (mA)
0.01
TYP
365
0.8
0.9
60
3
1
LTC3531/
V
IN
10µF
I
3.5
47µF
10
VIN
(V)
MAX
4
460
OUT
1.4
1
I
VOUT
100
4.5
5
3531 G03
3521 G06
UNITS
3
1000
3531f
mA
mV
5.5
µA
Ω
Ω
V