LTC3577_15 Datasheet, PDF (7/54 Pages) Linear Technology – Highly Integrated 6-Channel Portable PMIC

LTC3577/LTC3577-1
ELECTRICAL CHARACTERISTICS Step-Down Switching Regulators. The l denotes the specifications
which apply over the full operating temperature range, otherwise specifications are at T_A = 25°C. V_OUT = V_IN12 = V_IN3 = 3.8V,
all regulators enabled unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
R_{SW3_PD}
SW3 Pull-Down in Shutdown
POFF State
500mA Step-Down Switching Regulator 2 (Buck2 – Pushbutton Enabled, Second in Sequence)
10
kΩ
I_VIN12Q
Pulse-Skipping Mode Input Current
Burst Mode Operation Input Current
(Note 10)
(Note 10)
100
μA
17
μA
Shutdown Input Current
0.01
μA
I_LIM2
Peak PMOS Current Limit
V_FB2
Feedback Voltage
(Note 7)
Pulse-Skipping Mode
Burst Mode Operation
650
900
1200
mA
l 0.78
0.8
0.82
V
l 0.78
0.8
0.824
V
I_FB2
FB2 Input Current
D2
Max Duty Cycle
(Note 10)
FB2 = 0V
–0.05
100
0.05
μA
%
R_P2
R_DS(ON) of PMOS
I_SW2 = 100mA
R_N2
R_DS(ON) of NMOS
I_SW2 = –100mA
R_{SW2_PD}
SW2 Pull-Down in Shutdown
POFF State
500mA Step-Down Switching Regulator 1 (Buck1 – Pushbutton Enabled, First in Sequence)
0.6
Ω
0.6
Ω
10
kΩ
I_VIN12Q
Pulse-Skipping Mode Input Current
Burst Mode Operation Input Current
(Note 10)
(Note 10)
100
μA
17
μA
Shutdown Input Current
0.01
μA
I_LIM1
Peak PMOS Current Limit
V_FB1
Feedback Voltage
(Note 7)
Pulse-Skipping Mode
Burst Mode Operation
650
900
1200
mA
l 0.78
0.8
0.82
V
l 0.78
0.8
0.824
V
I_FB1
FB1 Input Current
D1
Max Duty Cycle
(Note 10)
FB1 = 0V
–0.05
100
0.05
μA
%
R_P1
R_N1
R_{SW1_PD}
R_DS(ON) of PMOS
R_DS(ON) of NMOS
SW1 Pull-Down in Shutdown
I_SW1 = 100mA
I_SW1 = –100mA
POFF State
0.6
Ω
0.6
Ω
10
kΩ
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 = V_BAT = 3.8V, LDO1 and LDO2 enabled unless otherwise noted.
SYMBOL PARAMETER
LDO Regulator 1 (LDO1 – Enabled via I²C)
CONDITIONS
MIN
TYP
MAX UNITS
V_INLDO1
V_{OUT_UVLO}
I_{QLDO1_VO}
I_{QLDO1_VI}
I_VINLDO1
V_{LDO1_FB}
I_{LDO1_FB}
I_{LDO1_OC}
Input Voltage Range
V_OUT Falling
V_OUT Rising
LD01 V_OUT Quiescent Current
LD01 V_INLDO1 Quiescent Current
Shutdown Current
LDO1_FB Regulated Feedback Voltage
LDO1_FB Line Regulation (Note 11)
LDO1_FB Load Regulation (Note 11)
LDO1_FB Input Current
Available Output Current
V_INLDO1 ≤ V_OUT + 0.3V
LDO1 is Disabled Below V_OUT UVLO
LDO1 Enabled, PON State, I_LDO1 = 0mA
LDO1 Enabled, PON State, I_LDO1 = 0mA
LDO1 Disabled, PON or POFF State
I_LDO1 = 1mA
I_LDO1 = 1mA, V_IN = 1.65V to 5.5V
I_LDO1 = 1mA to 150mA
LDO1_FB = 0.8V
l 1.65
2.5
l 0.78
–50
l 150
5.5
V
2.7
V
2.8
2.9
V
18
30
μA
0.1
2
μA
0.01
1
μA
0.8
0.82
V
0.4
mV/V
5
μV/mA
50
nA
mA
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