Datasheet

LTC3526L-2/LTC3526LB-2
5
3526lb2fa
TEMPERATURE (°C)
–50
0.50
V
IN
(V)
0.55
0.60
0.65
0.70
0.80
25
0 25 50
3526lb2 G14
75 100
0.75
1mA LOAD
NO LOAD
V
FB
vs Temperature
Start-Up Voltage vs Temperature
Load Regulation
Load Regulation Load Regulation
Burst Mode Quiesent Current
vs V
OUT
(LTC3526L-2)
TEMPERATURE (°C)
–60
–1.00
CHANGE IN V
FB
(%)
–0.75
–0.50
–0.25
0
–20 20
60
100
3526lb2 G13
0.25
0.50
–40 0
40
80
NORMALIZED TO 25°C
V
OUT
(V)
1.5
10.0
9.5
9.0
8.5
8.0
7.5
7.0
3.0 4.0 4.5
3526lb2 G15
2.0 2.5
3.5 5.0
I
Q
(µA)
Typical perForMance characTerisTics
T
A
= 25°C, unless otherwise noted.
Fixed Frequency Switching
Waveform and V
OUT
Ripple
Burst Mode Waveforms
(LTC3526L-2)
V
OUT
and I
IN
During Soft-Start
SW PIN
2V/DIV
200ns/DIVV
IN
= 1.2V
V
OUT
= 3.3V AT 100mA
C
OUT
= 4.7µF
3526lb2 G16
V
OUT
20mV/DIV
AC-COUPLED
SW PIN
2V/DIV
20µs/DIVV
IN
= 1.2V
V
OUT
= 3.3V AT 5mA
C
OUT
= 10µF
3526lb2 G17
V
OUT
20mV/DIV
AC-COUPLED
SHDN PIN
1V/DIV
INPUT
CURRENT
0.2A/DIV
200µs/DIVV
OUT
= 3.3V
C
OUT
= 4.7µF
3526lb2 G18
V
OUT
1V/DIV
LOAD (mA)
0.01
CHANGE IN V
OUT
(%)
0.1 1 10 100 1000
3526lb2 G23
–0.5
–0.4
–0.3
–0.2
–0.1
0.5
0.4
0.3
0.2
0.1
0
V
IN
= 0.9V
V
IN
= 1.2V
V
IN
= 1.5V
V
OUT
= 1.8V
LOAD (mA)
0.01
CHANGE IN V
OUT
(%)
0.1 1 10 100 1000
3526lb2 G24
–0.5
–0.4
–0.3
–0.2
–0.1
0.5
0.4
0.3
0.2
0.1
0
V
IN
= 1.2V
V
IN
= 1.8V
V
IN
= 2.4V
V
OUT
= 3.3V
LOAD (mA)
0.01
CHANGE IN V
OUT
(%)
0.1 1 10 100 1000
3526lb2 G25
–0.5
–0.4
–0.3
–0.2
–0.1
0.5
0.4
0.3
0.2
0.1
0
V
IN
= 1.2V
V
IN
= 2.4V
V
IN
= 3.6V
V
IN
= 4.2V
V
OUT
= 5V