LT3486
TYPICAL PERFORMANCE CHARACTERISTICS
Input Current with Output 1 and
Output 2 Open Circuit
20
T
A
= 25°C
R
T
= 63.4k
1000
T
A
= 25°C unless otherwise specified.
R
T
vs Oscillator Frequency
1100
OSCILLATOR FREQUENCY (kHz)
Oscillator Frequency vs V
IN
R
T
= 53.6k
INPUT CURRENT (mA)
15
1050
R
T
(k )
10
100
1000
5
950
0
2
4
6
8 10 12 14 16 18 20 22 24
V
IN
(V)
3486 G08
10
0
500
1000
1500
2000
OSCILLATOR FREQUENCY (kHz)
2500
3486 G09
900
2
4
6
8 10 12 14 16 18 20 22 24
V
IN
(V)
3486 G10
Oscillator Frequency
vs Temperature
10000
OSCILLATOR FREQUENCY (kHz)
12
10
QUIESCENT CURRENT (mA)
R
T
= 22.1k
1000
R
T
= 53.6k
8
6
4
2
0
Quiescent Current vs V
IN
1.0
PWM Pin Input Bias Current
V
IN
= 3.6V
UVLO
PWM PIN CURRENT (µA)
0.5
PWM 1
0
PWM 2
R
T
= 309k
100
–50
–0.5
SHDN
= 3V
CTRL1 = CTRL2 = 3V
0
2
4
6
8 10 12 14 16 18 20 22 24
V
IN
(V)
3486 G12
–25
0
25
50
75
TEMPERATURE (°C)
100
125
–1.0
0
2
6
8
4
PWM PIN VOLTAGE (V)
10
3486 G13
3486 G11
Switch Current Limit
vs Duty Cycle
1400
1300
CURRENT LIMIT (mA)
REF VOLTAGE (V)
1200
1100
1000
900
800
REF Voltage vs Temperature
1.30
1.30
REF Voltage Load Regulation
1.25
1.20
REF VOLTAGE (V)
1.15
1.10
1.05
1.00
0.95
T
A
= 85°C
T
A
= 25°C
T
A
= –50°C
V
IN
= 3.6V
V
IN
= 3.6V
1.28
1.26
1.24
1.22
20
30
40
50 60 70 80
DUTY CYCLE (%)
90
100
1.20
–50
–25
50
0
75
25
TEMPERATURE (°C)
100
125
0.90
V
IN
= 3.6V
T
A
= 25°C
0
20 40 60 80 100 120 140 160 180 200
REF LOAD CURRENT (µA)
3468 G16
3486 G14
3486 G15
3486fe
5
LINER [ LINEAR TECHNOLOGY ]
