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LTC3577 Datasheet(PDF) 5 Page - Linear Technology

Part # LTC3577
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

LTC3577 Datasheet(HTML) 5 Page - Linear Technology

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LTC3589/LTC3589-1/
LTC3589-2
5
3589fe
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
LDO Regulators
tLDO_SS
Soft-Start Time LDO2, LDO3, LDO4
100
μs
RLDO_PD
Output Pull-Down Resistance LDO2, LDO3,
LDO4
LDO Disabled
2.5
Always-On Regulator (LDO1_STDBY)
VLDO1_FB
LDO1 Feedback Voltage
l
0.76
0.8
0.84
V
VLDO1
LDO1 Line Regulation
ILDO1_STBY = 1mA, LDO1_STBY = 1.2V,
VIN = 2.7V to 5.5V
0.15
%/V
LDO1 Load Regulation
ILDO1 = 0.1mA to 25mA,
LDO1_STBY = 1.2V
0.1
%
ILDO1
Available Output Current
l
25
mA
ILDO1_SC
Short-Circuit Output Current Limit
65
100
mA
VDROP1
Dropout Voltage (Note 4)
ILDO1 = 25mA, LDO1_STBY = 3.3V
200
mV
ILDO1_FB
LDO1_FB Input Current
VLDO1_FB = 0.85V
–50
50
nA
LDO Regulator 2 (LDO2)
VIN_LDO2
VIN_LDO2 Input Voltage Range
l
1.7
VIN
V
IVIN_LDO2
VIN_LDO2 Quiescent Current
VIN_LDO2 Shutdown Current
Regulator Enabled
Regulator Disabled
l
l
12
0
20
1
μA
μA
IVIN
VIN Quiescent Current
EN_LDO2 = High
l
50
85
μA
VFB2(MAX)
LDO2 Maximum Feedback Voltage
L2DTV1 = L2DTV2 = 11111
l
0.735
0.75
0.765
V
VFB2(LSB)
LDO2 Feedback LSB Step Size
12.5
mV
VFB2(MIN)
LDO2 Minimum Feedback Voltage
L2DTV1 = L2DTV2 = 00000
VIN_LDO2 = VIN = 2.7V to 5.5V,
ILDO2 = 1mA
l
0.351
0.3625
0.374
V
LDO2 Line Regulation
ILDO2 =1mA, VINLDO2 = 2.7V to 5.5V
0.01
%/V
LDO2 Load Regulation
ILDO2 = 1mA to 250mA
0.01
%
IOUT2
LDO2 Available Output Current
l
250
mA
ISC2
LDO2 Short-Circuit Current Limit
300
450
600
mA
VDROP2
Dropout Voltage (Note 4)
ILDO2 = 200mA, VLDO2 = 2.5V
ILDO2 = 200mA, VLDO2 = 1.2V
140
350
180
500
mV
mV
ILDO2_FB
LDO2_FB Input Current
VLDO2_FB = 0.8V
–50
50
nA
LDO Regulator 3 (LDO3)
VIN_LDO34
VIN_LDO34 Input Range (LTC3589)
VIN_LDO34 Input Range (LTC3589-1/LTC3589-2)
l
l
2.35
3.0
VIN
VIN
V
V
IVIN_LDO34
VIN_LDO34 Quiescent Current
VIN_LDO34 Shutdown Current
Regulator Enabled
Regulator Disabled
l
l
15
0
29
1
μA
μA
IVIN
VIN Quiescent Current
l
50
85
μA
VLDO3
LDO3 Output Voltage (LTC3589)
LDO3 Output Voltage (LTC3589-1/LTC3589-2)
VIN_LDO34 = VIN = 2.7V to 5V,
ILDO3 = 1mA
l
l
1.746
2.716
1.8
2.8
1.854
2.884
V
V
LD03 Line Regulation
ILDO3 =1mA, VINLDO34 = 2.7V to 5.5V
0.01
%/V
LDO3 Load Regulation
ILDO3 = 1mA to 250mA
0.05
%
ILDO3
LDO3 Available Output Current
l
250
mA
ILDO3_SC
LDO3 Short-Circuit Current Limit
300
450
600
mA
VDROP3
LDO3 Dropout Voltage (LTC3589) (Note 4)
LDO3 Dropout Voltage (LTC3589-1/LTC3589-2)
(Note 4)
ILDO3 = 200mA, VLDO3 = 1.8V
ILDO3 = 200mA, VLDO3 = 2.8V
190
140
250
180
mV
mV
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = PVIN1 = PVIN2 = PVIN3 = PVIN4 = VIN_LDO2 = VIN_LDO34
= DVDD = 3.8V. All regulators disabled unless otherwise noted.


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