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LTC3556 Datasheet(PDF) 11 Page - Linear Technology

Part # LTC3556
Description  8-Output Regulator with Sequencing and I2C
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3556 Datasheet(HTML) 11 Page - Linear Technology

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LTC3589/LTC3589-1/
LTC3589-2
11
3589fe
TYPICAL PERFORMANCE CHARACTERISTICS
Buck-Boost Switching Regulator
Soft-Start
Dynamic Voltage Slew
Step-Down Switching Regulator 1
Load Step
Buck-Boost Switching Regulator 1
Load Step
Maximum Buck-Boost Load
Current vs VIN
Step-Down Switching Regulator 1
Load Step
3589 G19
100μs/DIV
1V/DIV
500mA/DIV
VOUT
IL
3589 G20
200μs/DIV
1V/DIV
5V/DIV
5V/DIV
VOUT
VSTB
PGOOD
VRRCR = 1.75mV/μs
3589 G21
40μs/DIV
VOUT
ILOAD
LOAD CAPACITANCE = 44μF
50mV/DIV
1A/DIV
PULSE-SKIPPING MODE
3589 G22
40μs/DIV
VOUT
ILOAD
LOAD CAPACITANCE = 44μF
50mV/DIV
1A/DIV
Burst Mode OPERATION
VIN (V)
2.5
4.0
3589 G24
1.5
0.5
3.0
3.5
4.5
0
2.5
2.0
1.0
5.0
5.5
VOUT = 1.8V
VOUT = 3.3V
VOUT = 5V
3589 G23
40μs/DIV
VOUT
ILOAD
200mV/DIV
1A/DIV
LOAD CAPACITANCE = 22μF
VIN = 3.8V, TA = 25°C, unless otherwise noted.
LDO1 Dropout Voltage
vs Temperature
LDO1 Output Change vs VIN
LDO1 Short-Circuit Current
vs Temperature
TEMPERATURE (°C)
–50
75
100
3589 G27
60
70
80
30
50
40
–25
0
25
50
20
150
125
VIN (V)
2
3589 G26
0.0
0.5
–1.5
–0.5
–1.0
34
–2.0
5
VLDO1 = 25mA
VLDO1 = 1.2V
VLDO1 = 1.8V
VLDO1 = 2.8V
VLDO1 = 3.3V
TEMPERATURE (°C)
–50
75
100
3589 G25
400
500
100
300
200
–25
0
25
50
0
150
125
VLDO1 = 1.8V
VLDO1 = 3.3V


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