LTC3526/LTC3526B
TYPICAL PERFORMANCE CHARACTERISTICS
Start-Up Delay Time vs V
IN
100
90
80
LOAD CURRENT (mA)
70
DELAY (μs)
60
50
40
30
20
10
0
1.0
1.5
2.0
0
2.5 3.0
V
IN
(V)
3.5
4.0
4.5
1
1.25
V
IN
(V)
1.5
3526 G08a
Burst Mode Threshold Current
vs V
IN
30
25
20
LEAVE BURST
15
ENTER BURST
10
5
V
OUT
= 1.8V
C
OUT
= 10μF
L = 4.7μH
LOAD CURRENT (mA)
40
Burst Mode Threshold Current
vs V
IN
V
OUT
= 2.5V
35 C
OUT
= 10μF
L = 4.7μH
30
25
LEAVE BURST
20
15
ENTER BURST
10
5
0
1
1.25
V
IN
(V)
3526 G08b
1.5
1.75
3526 G07
Burst Mode Threshold Current
vs V
IN
50
V
OUT
= 3.3V
45 C
OUT
= 10μF
L = 4.7μH
40
LOAD CURRENT (mA)
35
30
25
20
15
10
5
0
1.0
1.5
2.0
V
IN
(V)
2.5
3.0
3526 G08c
Burst Mode Threshold Current
vs V
IN
60
50
LOAD CURRENT (mA)
40
LEAVE BURST
30
20
ENTER BURST
10
0
1.0
V
OUT
= 5V
C
OUT
= 10μF
L = 4.7μH
FREQUENCY CHANGE (%)
2
1
0
–1
–2
–3
–4
–5
1.5
2.0
2.5 3.0
V
IN
(V)
3.5
4.0
4.5
Oscillator Frequency Change
vs V
OUT
NORMALIZED TO 3.3V
LEAVE BURST
ENTER BURST
–6
1.5
2.0
2.5
3.0 3.3
V
OUT
(V)
4.0
4.5
5.0
3526 G08d
3526 G09
R
DS(ON)
vs V
OUT
0.90
0.85
0.80
0.75
0.70
R
DS(ON)
(Ω)
0.65
0.60
0.55
0.50
0.45
0.40
0.35
0.30
1.5
2.0
2.5
3.0 3.5
V
OUT
(V)
4.0
4.5
5.0
NMOS
PMOS
FREQUENCY CHANGE (%)
10
8
6
4
2
0
–2
–4
–6
–8
Oscillator Frequency Change
vs Temperature
1.3
NORMALIZED TO 25°C
1.2
NORMALIZED R
DS(ON)
1.1
1.0
0.9
0.8
R
DS(ON)
Change vs Temperature
NORMALIZED TO 25°C
–10
–50
–30
–10 10
30
50
TEMPERATURE (°C)
70
90
0.7
–50
–30
–10 10
30
50
TEMPERATURE (°C)
70
90
3526 G10
3526 G11
3526 G12
3526bfb
4
LINER [ LINEAR TECHNOLOGY ]
