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