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LTC3589-1 数据表(PDF) 8 Page - Linear Technology

部件名 LTC3589-1
功能描述  Power Management Solution for Application Processors
Download  38 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC3589-1 数据表(HTML) 8 Page - Linear Technology

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LTC3676/LTC3676-1
8
3676ff
For more information www.linear.com/LTC3676
Typical perForMance characTerisTics
Standby IVIN vs VIN
LDO2 to LDO4 IVIN vs VIN
Step-Down Switching Regulator
IVIN vs VIN
elecTrical characTerisTics
Note 3: The LTC3676 includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 150°C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may impair device reliability.
Note 4: Dropout voltage is defined as (VIN – VLDO1) for LDO1 or
(VIN_Lx – VLDOx) for other LDOs when VLDOx is 3% lower than VLDOx
measured with VIN = VIN_Lx = 4.3V.
VOLTAGE (V)
2.5
8
3676 G01
4
0
3.5
4.5
3.0
4.0
5.0
12
16
6
2
10
14
5.5
VOLTAGE (V)
2.5
0
100
300
400
500
4.5
900
3676 G03
200
3.5
3.0
5.0
4.0
5.5
600
700
800
PULSE-SKIPPING MODE
ENABLE FOUR BUCKS
ENABLE THREE BUCKS
ENABLE TWO BUCKS
ENABLE ONE BUCK
Note 5: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
Note 6: Soft-Start measured in test mode with regulator error amplifier in
unity-gain mode.
Note 7: The switching regulator PMOS and NMOS on-resistance is
guaranteed by correlation to wafer level measurements.
Step-Down Switching Regulator
IVIN vs VIN
Input Supply Current
vs Temperature
Oscillator Frequency
vs Temperature
VOLTAGE (V)
2.5
0
20
60
80
100
4.5
180
3676 G04
40
3.5
3.0
5.0
4.0
5.5
120
140
160
Burst Mode OPERATION
ENABLE FOUR BUCKS
ENABLE THREE BUCKS
ENABLE TWO BUCKS
ENABLE ONE BUCK
VIN = 3.8V, TA = 25°C unless otherwise noted
VIN (V)
2.50
100
150
3676 G02
50
0
3.50
4.50
5.50
250
200
ENABLE 3 LDOs
ENABLE 2 LDOs
ENABLE 1 LDO
TEMPERATURE (°C)
–50
0
200
400
600
800
1000
1200
0
50
PULSE-SKIPPING
STANDBY
Burst Mode OPERATION
100
150
3676 G05
ALL REGULATORS ENABLED
TEMPERATURE (°C)
–50
2.00
2.05
2.10
2.15
2.20
2.25
2.30
0
50
100
150
3676 G06


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