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LTC3589 数据表(PDF) 9 Page - Linear Technology

部件名 LTC3589
功能描述  8-Output Regulator with Sequencing and I2C
PDF  50 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC3589 数据表(HTML) 9 Page - Linear Technology

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LTC3589/LTC3589-1/
LTC3589-2
9
3589fe
TYPICAL PERFORMANCE CHARACTERISTICS
Standby IVIN vs VIN
LDO2 to LDO4 IVIN vs VIN
VIN = 3.8V, TA = 25°C, unless otherwise noted.
Step-Down Switching Regulator
IVIN vs VIN
Input Supply Current
vs Temperature
Buck-Boost IVIN vs VIN
Step-Down Switching Regulator
IVIN vs VIN
VIN (V)
2.5
14
4.0
22554 G01
8
4
3.0
3.5
4.5
2
0
12
10
6
5.0
5.5
VIN (V)
2.5
4.0
3589 G02
150
50
3.0
3.5
4.5
0
250
200
100
5.0
5.5
ENABLE TWO LDOs
ENABLE ONE LDO
ENABLE THREE LDOs
VIN (V)
2.5
4.0
3589 G03
400
500
600
200
100
3.0
3.5
4.5
0
900
800
700
300
5.0
5.5
ENABLE TWO BUCKS
ENABLE ONE BUCK
ENABLE THREE BUCKS
PULSE-SKIPPING MODE
VIN (V)
2.5
4.0
3589 G04
80
100
120
40
20
3.0
3.5
4.5
0
60
5.0
5.5
ENABLE TWO BUCKS
ENABLE ONE BUCK
ENABLE THREE BUCKS
Burst Mode OPERATION
TEMPERATURE (°C)
–50
50
25
3589 G05
800
1000
1200
400
200
–25
0
75
0
600
100 125
150
ALL REGULATORS ENABLED
Burst Mode OPERATION
STANDBY (ONLY LDO1 ON)
ALL REGULATORS ENABLED
PULSE-SKIPPING MODE
VIN (V)
2.5
4.5
4.0
3589 G06
350
400
450
150
200
50
100
3.0
3.5
5.0
0
300
250
5.5
Burst Mode OPERATION
PWM MODE
Oscillator Frequency
vs Temperature
Switching Frequency Change vs VIN
Buck-Boost Efficiency vs IOUT
TEMPERATURE (°C)
–50
70
3589 G07
2.20
2.25
2.30
2.10
2.15
2.00
2.05
–10
30
110
1.95
150
VIN (V)
2.5
4.0
3589 G08
0.6
0.8
1.0
–0.2
0
0.2
0.4
–0.6
–0.4
3.0
3.5
4.5
–0.8
5.5
5.0
LOAD CURRENT (mA)
0
50
40
30
60
70
100
0.01
0.1
1
10
100
1000
3589 G9
20
10
80
90
BURST
PWM MODE
VOUT = 5.0V
VOUT = 2.5V
VOUT = 3.3V
VIN = 3.8V



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