Datasheet

LTC3676/LTC3676-1
4
3636fa
For more information www.linear.com/LTC3676
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_L2
= V
IN_L3
=
V
IN_L4
= DV
DD
= 3.8V. All regulators disabled unless otherwise noted.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Available Output Current
l
25 mA
Short-Circuit Output Current Limit 65 100 mA
Dropout Voltage (Note 4) I
LDO1
= 25mA, LDO1 = 3.3V 200 280 mV
Feedback Pin Input Current V
FB_L1
= 850mV –0.05 0.05 µA
LDO Regulator 2
V
IN_LDO2
Input Voltage
l
1.7 V
IN
V
LDO2 Output Voltage Range I
LDO2
= 1mA V
FB_L2
V
IN_L2
V
Available Output Current
l
300 mA
V
IN_L2
Quiescent Current
V
IN_L2
Shutdown Current
Regulator Enabled, I
LDO2
= 0A
Regulator Disabled
l
l
12
0
25
1
µA
µA
V
IN
Quiescent Current Regulator Enabled
l
50 85 µA
Feedback Regulation Voltage (V
FB_L2
)
l
0.707 0.725 0.743 V
Line Regulation I
LDO2
=1mA, V
IN
= 2.7V to 5.5V 0.01 %/V
Load Regulation I
LDO2
= 1mA to 300mA 0.01 %
Short-Circuit Current Limit 770 mA
Dropout Voltage (Note 4) I
LDO2
= 300mA, V
LDO2
= 2.5V
I
LDO2
= 300mA, V
LDO2
= 1.2V
210
450
260
615
mV
mV
Feedback Pin Input Current V
LDO2_FB
= 725mV –0.05 0.05 µA
LDO Regulator 3
V
IN_L3
Input Voltage
l
2.35 V
IN
V
Output Voltage V
IN_L3
= V
IN
, I
LDO3
= 1mA
l
1.746 1.8 1.854 V
Available Output Current
l
300 mA
V
IN_L3
Quiescent Current
V
IN_L3
Shutdown Current
Regulator Enabled, I
LDO3
= 0A
Regulator Disabled
l
l
14
0
25
1
µA
µA
V
IN
Quiescent Current
l
50 85 µA
Line Regulation I
LDO3
=1mA, V
IN
= 2.7V to 5.5V 0.01 %/V
Load Regulation I
LDO3
= 1mA to 300mA 0.05 %
Short-Circuit Current Limit 770 mA
Dropout Voltage (Note 4) I
LDO3
= 300mA, V
LDO3
= 1.8V 280 350 mV
LDO Regulator 4
V
IN_L4
Input Voltage
l
1.7 V
IN
V
LDO4 Output Voltage Range (LTC3676) I
LDO4
= 1mA V
FB_L4
V
IN_L4
V
Feedback Regulation Voltage (LTC3676) (V
FB_L4
)
l
0.707 0.725 0.743 V
Output Voltage (LTC3676-1) I
LDO4
= 1mA, LDOB[4:3] = 00
LDOB[4:3] = 01
LDOB[4:3] = 10
LDOB[4:3] = 11
l
l
l
l
1.164
2.425
2.716
2.91
1.2
2.5
2.8
3.0
1.236
2.575
2.884
3.09
V
V
V
V
Available Output Current
l
300 mA
V
IN_L4
Quiescent Current
V
IN_L4
Shutdown Current
Regulator Enabled, I
LDO4
= 0A
Regulator Disabled
l
l
12
0
25
1
µA
µA
V
IN
Quiescent Current Regulator Enabled
l
50 85 µA
Line Regulation I
LDO4
=1mA, V
IN
= 2.7V to 5.5V 0.01 %/V