LTC3577-4_15 Datasheet, PDF (8/52 Pages) Linear Technology – Highly Integrated Portable Product PMIC

LTC3577-3/LTC3577-4
ELECTRICAL CHARACTERISTICS LDO Regulators. The l denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at T_A = 25°C. V_INLDO1 = V_INLDO2 = V_OUT = 3.8V, LDO1 and LDO2 enabled
unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
LDO Regulator 1 (LDO1-Always On)
V_INLDO1
Input Voltage Range
V_INLDO1 ≤ V_OUT + 0.3V
V_{OUT_UVLO} V_OUT Falling
V_OUT Rising
LDO1 is Disabled Below V_OUT UVLO
V_{LDO1_FB} LDO1_FB Regulated Feedback Voltage
I_LDO1 = 1mA
LDO1_FB Line Regulation (Note 11)
I_LDO1 = 1mA, V_IN = 1.65V to 5.5V
LDO1_FB Load Regulation (Note 11)
I_LDO1 = 1mA to 150mA
I_{LDO1_OC} Available Output Current
I_{LDO1_SC} Short-Circuit Output Current
V_DROP1
Dropout Voltage (Note 12)
I_LDO1 = 150mA, V_INLDO1 = 3.6V
I_LDO1 = 150mA, V_INLDO1 = 2.5V
I_LDO1 = 75mA, V_INLDO1 = 1.8V
R_{LDO1_PD} Output Pull-Down Resistance in Shutdown LDO1 Disabled
I_{LDO_FB1} LDO_FB1 Input Current
LDO Regulator 2 (LDO2-Pushbutton Enabled, First in Sequence)
l 1.65
5.5
V
2.5
2.7
V
2.8
2.9
V
l 0.78
0.8
0.82
V
0.4
mV/V
5
μV/mA
l 150
mA
270
mA
160
260
mV
200
320
mV
170
280
mV
10
kΩ
–50
50
nA
V_INLDO2
V_{OUT_UVLO}
V_{LDO2_FB}
I_{LDO2_OC}
I_{LDO2_SC}
V_DROP2
R_{LDO2_PD}
I_{LDO_FB2}
Input Voltage Range
V_OUT Falling
V_OUT Rising
LDO2_FB Regulated Output Voltage
LDO2_FB Line Regulation (Note 11)
LDO2_FB Load Regulation (Note 11)
Available Output Current
Short-Circuit Output Current
Dropout Voltage (Note 12)
Output Pull-Down Resistance in Shutdown
LDO_FB2 Input Current
V_INLDO2 ≤ V_OUT + 0.3V
LDO2 is Disabled Below V_OUT UVLO
I_LDO2 = 1mA
I_LDO2 = 1mA, V_IN = 1.65V to 5.5V
I_LDO2 = 1mA to 150mA
I_LDO2 = 150mA, V_INLDO2 = 3.6V
I_LDO2 = 150mA, V_INLDO2 = 2.5V
I_LDO1 = 75mA, V_INLDO1 = 1.8V
LDO2 Disabled
l 1.65
5.5
V
2.5
2.7
V
2.8
2.9
V
l 0.78
0.8
0.82
V
0.4
mV/V
5
μV/mA
l 150
mA
270
mA
160
260
mV
200
320
mV
170
280
mV
14
kΩ
–50
50
nA
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