LTC3531-3 Linear Technology, LTC3531-3 Datasheet - Page 6

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

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LTC3531/
LTC3531-3.3/LTC3531-3
TYPICAL PERFOR A CE CHARACTERISTICS
6
200mA/DIV
200mA/DIV
50mV/DIV
50mV/DIV
20mV/DIV
V
V
V
OUT
OUT
OUT
5V/DIV
5V/DIV
5V/DIV
5V/DIV
SW1
SW2
SW1
SW2
(AC)
(AC)
(AC)
I
I
L
L
3.6V
200mA to 80mA
20mA LOAD
L = 10μH
C
V
C
Shorted Output
Boost Mode Waveforms at
2.5V
L = 10μH
C
OUT
IN
OUT
OUT
= 5
= 22μF
= 22μF
= 22μF
IN
IN
, 3.3V
, 3.3V
W
100mA LOAD
OUT
OUT
25μs/DIV
5μs/DIV
1μs/DIV
Load Step
U
100mA
20mA LOAD
3531 G23
3531 G21
3531 G19
200mA/DIV
200mA/DIV
200mA/DIV
200mA/DIV
50mV/DIV
V
OUT
2V/DIV
2V/DIV
1V/DIV
5V/DIV
5V/DIV
V
SW1
SW2
SW1
SW2
(AC)
OUT
I
I
I
L
T
L
L
A
SW1 and SW2 Close-Up in Four
Switch Mode
Boost Mode Waveforms at
2.5V
V
V
L = 10μH
C
Start-Up into 50mA Load at
3.3 V
Then 4sw Modes)
= 25°C unless otherwise specifi ed.
IN
OUT
OUT
= 3.6V
= 3.3V
= 22μF
IN
OUT
, 3.3V
(Shows Start, Buck,
OUT
200ns/DIV
25μs/DIV
5μs/DIV
20mA
3531 G24
3531 G20
3531 G22
3531f