参数资料
型号: LTC3589IUJ-1#PBF
厂商: LINEAR TECHNOLOGY CORP
元件分类: 稳压器
英文描述: SWITCHING REGULATOR, 2600 kHz SWITCHING FREQ-MAX, PQCC40
封装: 6 X 6 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, QFN-40
文件页数: 2/46页
文件大小: 570K
代理商: LTC3589IUJ-1#PBF
LTC3589/LTC3589-1
10
3589fc
TYPICAL PERFORMANCE CHARACTERISTICS
Buck-Boost Efficiency vs IOUT
Step-Down Switching Regulator 1
Efficiency vs IOUT
Step-Down Switching Regulator 2
Efficiency vs IOUT
Step-Down Switching Regulator 3
Efficiency vs IOUT
Buck-Boost RDS(ON) vs Temperature
Step-Down Switching Regulator
RDS(ON) vs Temperature
LOAD CURRENT (mA)
0
EFFICIENCY
(%)
50
40
30
60
70
100
0.01
0.1
1
10
100
1000
3589 G10
20
10
80
90
BURST
PWM MODE
VIN = 5.0V
VIN = 4.2V
VIN = 3.0V
VOUT = 3.3V
LOAD CURRENT (mA)
0
EFFICIENCY
(%)
50
40
30
60
70
100
0.01
0.1
1
10
100
1000
3589 G12
20
10
80
90
FORCED
CONTINUOUS
PULSE-SKIPPING
BURST
VOUT = 1.8V
LOAD CURRENT (mA)
0
EFFICIENCY
(%)
50
40
30
60
70
100
0.01
0.1
1
10
100
1000
3589 G13
20
10
80
90
FORCED
CONTINUOUS
PULSE-
SKIPPING
BURST
VOUT = 3.3V
TEMPERATURE (°C)
–50
R
DS(ON)
(Ω)
70
3589 G14
0.35
0.40
0.15
0.20
0.25
0.30
0.05
0.10
–10
30
0
150
110
BUCK2, 3 PMOS
BUCK1 PMOS
BUCK2, 3 NMOS
BUCK1 NMOS
TEMPERATURE (°C)
–50
R
DS(ON)
(Ω)
70
3589 G15
0.15
0.20
0.25
0.05
0.10
–10
30
0
150
110
PMOS
NMOS
LOAD CURRENT (mA)
0
EFFICIENCY
(%)
50
40
30
60
70
100
0.01
0.1
1
10
100
1000
3589 G11
20
10
80
90
PULSE-SKIPPING
FORCED
CONTINUOUS
VOUT = 1.2V
BURST
VIN = 3.8V, TA = 25°C, unless otherwise noted.
Step-Down Switching
Regulator Current Limit
vs Temperature
Step-Down Switching Regulator
Soft-Start
Buck-Boost Current Limit
vs Temperature
TEMPERATURE (°C)
–50
CURRENT
LIMIT
(A)
75
100
3589 G16
2.5
3.0
3.5
0.5
2.0
1.5
1.0
–25
0
25
50
0
150
125
BUCK1
BUCK2, BUCK3
BUCK2, BUCK3 (LTC3589-1)
TEMPERATURE (°C)
–50
CURRENT
LIMIT
(A)
75
100
3589 G17
2.5
3.0
3.5
0.5
2.0
1.5
1.0
–25
0
25
50
0
150
125
PEAK LIMIT
CLAMP LIMIT
3589 G18
200μs/DIV
500mV/DIV
200mA/DIV
VOUT
IL
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