LTC3589/LTC3589-1/
LTC3589-2
ELECTRICAL CHARACTERISTICS
SYMBOL
t
LDO_SS
R
LDO_PD
PARAMETER
Soft-Start Time LDO2, LDO3, LDO4
Output Pull-Down Resistance LDO2, LDO3,
LDO4
LDO1 Feedback Voltage
LDO1 Line Regulation
LDO1 Load Regulation
I
LDO1
I
LDO1_SC
V
DROP1
I
LDO1_FB
V
IN_LDO2
I
VIN_LDO2
I
VIN
V
FB2(MAX)
V
FB2(LSB)
V
FB2(MIN)
Available Output Current
Short-Circuit Output Current Limit
Dropout Voltage (Note 4)
LDO1_FB Input Current
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
L2DTV1 = L2DTV2 = 00000
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
l
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.
CONDITIONS
MIN
TYP
100
LDO Disabled
2.5
MAX
UNITS
μs
kΩ
LDO Regulators
Always-On Regulator (LDO1_STDBY)
V
LDO1_FB
V
LDO1
l
0.76
0.8
0.15
0.1
0.84
V
%/V
%
mA
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
l
25
65
100
50
V
IN
12
0
50
0.735
0.351
0.75
12.5
0.3625
0.374
20
1
85
0.765
200
–50
mA
mV
nA
V
μA
μA
μA
V
mV
V
I
LDO1
= 25mA, LDO1_STBY = 3.3V
V
LDO1_FB
= 0.85V
l
LDO Regulator 2 (LDO2)
1.7
Regulator Enabled
Regulator Disabled
EN_LDO2 = High
L2DTV1 = L2DTV2 = 11111
l
l
l
l
LDO2 Line Regulation
LDO2 Load Regulation
I
OUT2
I
SC2
V
DROP2
I
LDO2_FB
V
IN_LDO34
I
VIN_LDO34
I
VIN
V
LDO3
LDO2 Available Output Current
LDO2 Short-Circuit Current Limit
Dropout Voltage (Note 4)
LDO2_FB Input Current
V
IN_LDO34
Input Range (LTC3589)
V
IN_LDO34
Input Range (LTC3589-1/LTC3589-2)
V
IN_LDO34
Quiescent Current
V
IN_LDO34
Shutdown Current
V
IN
Quiescent Current
LDO3 Output Voltage (LTC3589)
LDO3 Output Voltage (LTC3589-1/LTC3589-2)
LD03 Line Regulation
LDO3 Load Regulation
I
LDO3
I
LDO3_SC
V
DROP3
LDO3 Available Output Current
LDO3 Short-Circuit Current Limit
0.01
0.01
250
300
450
140
350
–50
l
l
%/V
%
mA
600
180
500
50
V
IN
V
IN
mA
mV
mV
nA
V
V
μA
μA
μA
V
V
%/V
%
mA
600
250
180
mA
mV
mV
3589fe
I
LDO2
= 200mA, V
LDO2
= 2.5V
I
LDO2
= 200mA, V
LDO2
= 1.2V
V
LDO2_FB
= 0.8V
LDO Regulator 3 (LDO3)
2.35
3.0
15
0
50
1.746
2.716
1.8
2.8
0.01
0.05
l
Regulator Enabled
Regulator Disabled
V
IN_LDO34
= V
IN
= 2.7V to 5V,
I
LDO3
= 1mA
I
LDO3
=1mA, V
INLDO34
= 2.7V to 5.5V
I
LDO3
= 1mA to 250mA
l
l
l
l
l
29
1
85
1.854
2.884
250
300
450
190
140
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)
5
LINEAR [ LINEAR INTEGRATED SYSTEMS ]
