ltc3528-2 Linear Technology Corporation, ltc3528-2 Datasheet - Page 6

• Manufacturer Part Number: ltc3528-2
• Description: Ltc3528-2 - 1a, 2mhz Synchronous Step-up Dc/dc Converter In 2mm ? 3mm Dfn
• Manufacturer: Linear Technology Corporation

LTC3528-2
TYPICAL PERFORMANCE CHARACTERISTICS
6
200mA/DIV
20mV/DIV
V
OUT
I
L
V
V
C
C
I
L = 2.2µH
Fixed Frequency V
Inductor Current Waveforms
OUT
IN
OUT
OUT
FF
= 1.2V
= 33pF
= 100mA
= 3.3V
= 10µF
100mV/DIV
200mA/DIV
100mV/DIV
100mA/DIV
CURRENT
CURRENT
LOAD
LOAD
V
V
OUT
OUT
500ns/DIV
Load Step Response (Fixed
Frequency, 3.6V to 5V)
Load Step Response (Fixed
Frequency, 1.2V to 3.3V)
V
V
C
L = 2.2µH
LOAD CURRENT = 100mA TO 550mA
V
V
C
L = 2.2µH
LOAD CURRENT = 20mA TO 170mA
IN
OUT
OUT
IN
OUT
OUT
= 3.6V
= 1.2V
OUT
= 5V
= 10µF
= 3.3V
= 10µF
Ripple and
20µs/DIV
20µs/DIV
35282 G19
100mA/DIV
INDUCTOR
50mV/DIV
CURRENT
V
OUT
35282 G24
35282 G22
Burst Mode Waveforms
V
V
C
C
I
LOAD
IN
OUT
OUT
FF
= 3.6V
= 33pF
= 5V
= 10µF
= 30mA
5µs/DIV
100mV/DIV
200mA/DIV
100mV/DIV
100mA/DIV
CURRENT
CURRENT
LOAD
LOAD
V
V
OUT
OUT
(T
Load Step Response (Burst Mode
Operation, 1.2V to 3.3V)
35282 G20
Load Step Response (Burst Mode
Operation, 3.6V to 5V)
V
V
C
L = 2.2µH
LOAD CURRENT = 20mA TO 550mA
V
V
C
L = 2.2µH
LOAD CURRENT = 10mA TO 160mA
IN
OUT
OUT
IN
OUT
OUT
A
= 1.2V
= 3.6V
= 25°C unless otherwise noted)
= 3.3V
= 10µF
= 5V
= 10µF
200mA/DIV
SHDN PIN
1V/DIV
V
OUT
I
IN
20µs/DIV
20µs/DIV
V
V
V
C
L = 2.2µH
IN
OUT
OUT
OUT
= 1.2V
= 3.3V
= 10µF
and I
IN
During Soft-Start
200µs/DIV
35282 G25
35282 G23
35282 G21
35282f