Datasheet

LTC3533
5
3533f
TYPICAL PERFORMANCE CHARACTERISTICS
Switch Pins in Buck-Boost Mode
Switch Pins Entering Buck-Boost
Mode
Output Ripple at 1A Load
Load Transient Response in Fixed
Frequency Mode, No Load to 1.5A
Load Transient Response in Auto
Burst Mode, No Load to 600mA
Burst Mode Operation
Transition from Burst Mode
Operation to Fixed Frequency Mode
T
A
= 25°C, unless otherwise specifi ed.
50ns/DIV
3533 G10
SW1
2V/DIV
SW2
2V/DIV
V
IN
= 3.3V
V
OUT
= 3.3V AT 500mA
50ns/DIV
3533 G11
SW1
2V/DIV
SW2
2V/DIV
V
IN
= 4.2V
V
OUT
= 3.3V AT 500mA
1µs/DIV
3533 G12
V
OUT
= 3.3V, 20mV/DIV
C
OUT
= 100µF CERAMIC
V
IN
= 4.2V
V
IN
= 3.3V
V
IN
= 2.7V
20µs/DIV
3533 G15
C
OUT
= 100µF CERAMIC
INDUCTOR
CURRENT
0.5A/DIV
V
OUT
50mV/DIV
200µs/DIV
3533 G16
C
OUT
= 100µF CERAMIC
INDUCTOR
CURRENT
0.5A/DIV
V
OUT
50mV/DIV
V
OUT
100mV/DIV
I
L
0.5A/DIV
100µs/DIV
V
IN
= 3.6V
V
OUT
= 3.3V
C
OUT
= 100µF X5R CERAMIC
3533 G13
V
OUT
100mV/DIV
LOAD
0.5A/DIV
100µs/DIV
3533 G14
V
IN
= 3.6V
V
OUT
= 3.3V
C
OUT
= 100µF X5R CERAMIC +
100µF LOW ESR TANTALUM