LTC3589_1 Datasheet, PDF (5/46 Pages) Linear Technology – 8-Output Regulator with Sequencing and I2C

LTC3589
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full 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
100
µs
2.5
kΩ
Always-On Regulator (LDO1_STDBY)
V_{LDO1_FB}
V_LDO1
LDO1 Feedback Voltage
LDO1 Line Regulation
LDO1 Load Regulation
l 0.76
0.8
0.84
V
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
0.15
%/V
0.1
%
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 25
mA
65
100
mA
I_LDO1 = 25mA, LDO1_STBY = 3.3V
V_{LDO1_FB} = 0.85V
200
mV
–50
50
nA
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)
Regulator Enabled
Regulator Disabled
l 1.7
V_IN
V
l
12
20
µA
l
0
1
µA
EN_LDO2 = High
l
50
85
µA
L2DTV1 = L2DTV2 = 11111
l 0.735 0.75 0.765
V
12.5
mV
L2DTV1 = L2DTV2 = 00000
V_{IN_LDO2} = V_IN = 2.7V to 5.5V,
I_LDO2 = 1mA
l 0.351 0.3625 0.374
V
I_LDO2 =1mA, V_INLDO2 = 2.7V to 5.5V
0.01
%/V
I_LDO2 = 1mA to 250mA
0.01
%
l 250
mA
300
450
600
mA
I_LDO2 = 200mA, V_LDO2 = 2.5V
I_LDO2 = 200mA, V_LDO2 = 1.2V
V_{LDO2_FB} = 0.8V
140
180
mV
350
500
mV
–50
50
nA
V_{IN_LDO34}
I_{VIN_LDO34}
I_VIN
V_LDO3
I_LDO3
I_{LDO3_SC}
V_DROP3
V_{IN_LDO34} Input Range
V_{IN_LDO34} Quiescent Current
V_{IN_LDO34} Shutdown Current
V_IN Quiescent Current
LDO3 Output Voltage
LD03 Line Regulation
LDO3 Load Regulation
LDO3 Available Output Current
LDO3 Short-Circuit Current Limit
LDO3 Dropout Voltage (Note 4)
Regulator Enabled
Regulator Disabled
l 2.35
V_IN
V
l
15
25
µA
l
0
1
µA
l
50
85
µA
V_{IN_LDO34} = V_IN = 2.7V to 5V,
I_LDO3 = 1mA
l 1.746
1.8 1.854
V
I_LDO3 =1mA, V_INLDO34 = 2.7V to 5.5V
0.01
%/V
I_LDO3 = 1mA to 250mA
0.05
%
l 250
mA
300
450
600
mA
I_LDO3 = 200mA, V_LDO3 = 1.8V
190
250
mV
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