LTC3537
6
3537fd
TYPICAL PERFORMANCE CHARACTERISTICS
Feedback Voltage Change
vs Temperature
Start-Up Voltage vs Temperature
Burst Mode Quiescent Current
vs V
OUTB
T
A
= 25癈 unless otherwise noted.
TEMPERATURE (癈)
40
0.05
0.00
0.10
0.15
0.20
0.25
0.30
40 60
20
0
3537 G16
80
20
NORMALIZED TO 20癈
V
FBB
AND V
FBL
TEMPERATURE (癈)
40
0.80
0.75
0.70
0.65
0.60
0.55
0.50
40 60
20
0
3537 G17
80
20
V
OUTB
(V)
1.8
60
50
30
40
20
10
3.8 4.3
3.3
2.8
3537 G18
4.8
2.3
V
INB
= 1.2V
ENLDO = HIGH
R
DS(ON)
vs V
OUTB
Oscillator Frequency Change vs
Temperature
R
DS(ON)
Change vs Temperature
V
OUTB
(V)
1.5
1.0
0.9
0.8
0.7
0.6
0.5
0.3
0.4
0.2
3.5 4 4.5
3
2.5
3537 G13
5
2
NMOS
PMOS
TEMPERATURE (癈)
40
1
0
1
2
3
4
40 60
20
0
3537 G14
80
20
NORMALIZED TO 25癈
TEMPERATURE (癈)
40
30
20
10
0
10
20
30
40 60
20
0
3537 G15
80
20
NMOS
PMOS
NORMALIZED TO 25癈
Burst Mode Threshold Current
vs V
INB
Burst Mode Threshold Current
vs V
INB
Oscillator Frequency Change
vs V
OUTB
V
INB
(V)
0.8
30
20
10
0
60
50
40
1 1.2 1.4 1.6 1.8
2.4
2 2.2
3537 G10
ENTER BURST
LEAVE BURST
V
OUTB
= 3.3V
C
OUTB
= 10糉
L = 2.2糎
V
INB
(V)
0.9
120
100
60
80
40
20
0
180
160
140
1.4 1.9 2.4 2.9
4.4
3.4 3.9
3537 G11
ENTER BURST
LEAVE BURST
V
OUTB
= 5V
C
OUTB
= 10糉
L = 2.2糎
V
OUTB
(V)
1.5
1
0
1
2
3
5
4
6
3.5 4 4.5
3
2.5
3537 G12
5
2
NORMALIZED TO 3.3V