Datasheet

LTC3526L/LTC3526LB
5
3526lfc
TEMPERATURE (°C)
–50
0.50
V
IN
(V)
0.55
0.60
0.65
0.70
0.80
25
0 25 50
3526l G14
75 100
0.75
1mA LOAD
NO LOAD
V
FB
vs Temperature Start-Up Voltage vs Temperature
Fixed Frequency Switching
Waveform and V
OUT
Ripple
Burst Mode Waveforms
(LTC3526L) V
OUT
and I
IN
During Soft-Start
Burst Mode Quiesent Current
vs V
OUT
(LTC3526L)
TEMPERATURE (°C)
–60
–1.00
CHANGE IN V
FB
(%)
–0.75
–0.50
–0.25
0
–20 20
60
100
3526l 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
3526l G15
2.0 2.5
3.5 5.0
I
Q
(µA)
SW PIN
2V/DIV
500ns/DIVV
IN
= 1.2V
V
OUT
= 3.3V AT 100mA
C
OUT
= 10µF
3526l G16
V
OUT
10mV/DIV
AC-COUPLED
SW PIN
2V/DIV
INDUCTOR
CURRENT
0.2A/DIV
10µs/DIVV
IN
= 1.2V
V
OUT
= 3.3V
C
OUT
= 10µF
3526l G17
V
OUT
20mV/DIV
AC-COUPLED
SHDN PIN
1V/DIV
INPUT
CURRENT
0.2A/DIV
200µs/DIVV
OUT
= 3.3V
C
OUT
= 10µF
3526l G18
V
OUT
1V/DIV
Load Step Response (from Burst
Mode Operation) (LTC3526L)
LOAD
CURRENT
50mA/DIV
100µs/DIVV
IN
= 3.6V
V
OUT
= 5V
20mA TO 170mA STEP
C
OUT
= 10µF
3526l G19
V
OUT
100mV/DIV
AC-COUPLED
Load Step Response
(Fixed Frequency)
LOAD
CURRENT
50mA/DIV
100µs/DIVV
IN
= 3.6V
V
OUT
= 5V
50mA TO 150mA STEP
C
OUT
= 10µF
3526l G20
V
OUT
100mV/DIV
AC-COUPLED
typicAl perForMAnce chArActeristics