LTC3589_12 Datasheet, PDF (5/50 Pages) Linear Technology – 8-Output Regulator with Sequencing and I2C

LTC3589/LTC3589-1/
LTC3589-2
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T_A = 25°C (Note 2). V_IN = PV_IN1 = PV_IN2 = PV_IN3 = PV_IN4 = V_{IN_LDO2} = V_{IN_LDO34}
= DV_DD = 3.8V. All regulators disabled unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP MAX UNITS
LDO Regulators
t_{LDO_SS}
R_{LDO_PD}
Soft-Start Time LDO2, LDO3, LDO4
Output Pull-Down Resistance LDO2, LDO3,
LDO4
LDO Disabled
Always-On Regulator (LDO1_STDBY)
V_{LDO1_FB}
V_LDO1
LDO1 Feedback Voltage
LDO1 Line Regulation
LDO1 Load Regulation
l
I_{LDO1_STBY} = 1mA, LDO1_STBY = 1.2V,
V_IN = 2.7V to 5.5V
I_LDO1 = 0.1mA to 25mA,
LDO1_STBY = 1.2V
I_LDO1
Available Output Current
I_{LDO1_SC}
Short-Circuit Output Current Limit
V_DROP1
Dropout Voltage (Note 4)
I_{LDO1_FB}
LDO1_FB Input Current
LDO Regulator 2 (LDO2)
l
I_LDO1 = 25mA, LDO1_STBY = 3.3V
V_{LDO1_FB} = 0.85V
V_{IN_LDO2}
I_{VIN_LDO2}
I_VIN
V_FB2(MAX)
V_FB2(LSB)
V_FB2(MIN)
V_{IN_LDO2} Input Voltage Range
V_{IN_LDO2} Quiescent Current
V_{IN_LDO2} Shutdown Current
V_IN Quiescent Current
LDO2 Maximum Feedback Voltage
LDO2 Feedback LSB Step Size
LDO2 Minimum Feedback Voltage
I_OUT2
I_SC2
V_DROP2
LDO2 Line Regulation
LDO2 Load Regulation
LDO2 Available Output Current
LDO2 Short-Circuit Current Limit
Dropout Voltage (Note 4)
I_{LDO2_FB}
LDO2_FB Input Current
LDO Regulator 3 (LDO3)
l
Regulator Enabled
l
Regulator Disabled
l
EN_LDO2 = High
l
L2DTV1 = L2DTV2 = 11111
l
L2DTV1 = L2DTV2 = 00000
l
V_{IN_LDO2} = V_IN = 2.7V to 5.5V,
I_LDO2 = 1mA
I_LDO2 =1mA, V_INLDO2 = 2.7V to 5.5V
I_LDO2 = 1mA to 250mA
l
I_LDO2 = 200mA, V_LDO2 = 2.5V
I_LDO2 = 200mA, V_LDO2 = 1.2V
V_{LDO2_FB} = 0.8V
V_{IN_LDO34} V_{IN_LDO34} Input Range (LTC3589)
l
V_{IN_LDO34} Input Range (LTC3589-1/LTC3589-2)
l
I_{VIN_LDO34} V_{IN_LDO34} Quiescent Current
Regulator Enabled
l
V_{IN_LDO34} Shutdown Current
Regulator Disabled
l
I_VIN
V_IN Quiescent Current
l
V_LDO3
LDO3 Output Voltage (LTC3589)
V_{IN_LDO34} = V_IN = 2.7V to 5V,
l
LDO3 Output Voltage (LTC3589-1/LTC3589-2) I_LDO3 = 1mA
l
LD03 Line Regulation
I_LDO3 =1mA, V_INLDO34 = 2.7V to 5.5V
LDO3 Load Regulation
I_LDO3 = 1mA to 250mA
I_LDO3
LDO3 Available Output Current
l
I_{LDO3_SC}
LDO3 Short-Circuit Current Limit
V_DROP3
LDO3 Dropout Voltage (LTC3589) (Note 4)
I_LDO3 = 200mA, V_LDO3 = 1.8V
LDO3 Dropout Voltage (LTC3589-1/LTC3589-2) I_LDO3 = 200mA, V_LDO3 = 2.8V
(Note 4)
0.76
25
–50
1.7
0.735
0.351
250
300
–50
2.35
3.0
1.746
2.716
250
300
100
2.5
0.8
0.84
0.15
0.1
65
100
200
50
12
0
50
0.75
12.5
0.3625
V_IN
20
1
85
0.765
0.374
0.01
0.01
450
600
140
180
350
500
50
V_IN
V_IN
15
29
0
1
50
85
1.8 1.854
2.8 2.884
0.01
0.05
450
600
190
250
140
180
μs
kΩ
V
%/V
%
mA
mA
mV
nA
V
μA
μA
μA
V
mV
V
%/V
%
mA
mA
mV
mV
nA
V
V
μA
μA
μA
V
V
%/V
%
mA
mA
mV
mV
3589fe
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