LTC3576 Datasheet, PDF (5/48 Pages) Linear Technology – Switching Power Manager with USB On-the-Go + Triple Step-Down DC/DCs

LTC3576/LTC3576-1
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_BUS = 5V, BAT = 3.8V, DV_CC = 3.3V, R_CLPROG = 3.01k, unless
otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
Always On 3.3V LDO Supply
V_LDO3V3
Regulated Output Voltage
0mA < I_LDO3V3 < 20mA
R_{CL_LDO3V3}
Closed-Loop Output Resistance
R_{OL_LDO3V3}
Dropout Output Resistance
Logic (I_LIM0, I_LIM1, EN1, EN2, EN3, ENOTG, and SCL, SDA when DV_CC = 0V)
V_IL
Logic Low Input Voltage
V_IH
Logic High Input Voltage
I_PD1
I_LIM0, I_LIM1, EN1, EN2, EN3, ENOTG, SCL,
SDA Pull-Down Current
I²C Port
DV_CC
I_DVCC
V_DVCC(UVLO)
ADDRESS
Input Supply
DV_CC Current
DV_CC UVLO
I²C Address
SCL/SDA = 0kHz, DV_CC = 3.3V
V_IH, SDA, SCL
V_IL, SDA, SCL
I_PD2, SDA, SCL
V_OL
f_SCL
t_BUF
Input High Threshold
Input Low Threshold
Pull-Down Current
Digital Output Low (SDA)
Clock Operating Frequency
Bus Free Time Between Stop and Start
Condition
I_SDA = 3mA
t_{HD_STA}
Hold Time After (Repeated) Start
Condition
t_{SU_STA}
Repeated Start Condition Setup Time
t_{SU_STO}
Stop Condition Setup Time
t_{HD_DAT(O)}
Data Hold Time Output
t_{HD_DAT(I)}
Data Hold Time Input
t_{SU_DAT}
Data Setup Time
t_LOW
SCL Low Period
t_HIGH
SCL High Period
t_f
SDA/SCL Fall Time
t_r
SDA/SCL Rise Time
t_SP
Input Spike Suppression Pulse Width
General Purpose Switching Regulators 1, 2 and 3
V_IN1,2,3
V_OUT(UVLO)
Input Supply Voltage
V_OUT UVLO—V_OUT Falling
V_OUT UVLO—V_OUT Rising
(Note 8)
V_IN1,2,3 Connected to V_OUT Through
Low Impedance. Switching
Regulators are Disabled in UVLO
f_OSC
I_FB1,2,3
D1,2,3
Switching Frequency
FBx Input Current
Maximum Duty Cycle
V_FB1,2,3 = 0.85V
R_{SW1,2,3_PD}
SWx Pull-Down in Shutdown
MIN
TYP
MAX
3.1
3.3
3.5
2.7
23
0.4
1.2
2
UNITS
V
Ω
Ω
V
V
μA
1.6
5.5
0.5
1.0
0001001[0]
70
30
2
0.4
400
1.3
0.6
0.6
0.6
0
900
0
100
1.3
0.6
20
300
20
300
50
2.7
5.5
2.5
2.6
2.8
2.9
1.8
2.25
2.7
–50
50
100
10
V
μA
V
%DV_CC
%DV_CC
μA
V
kHz
μs
μs
μs
μs
ns
ns
ns
μs
μs
ns
ns
ns
V
V
V
MHz
nA
%
kΩ
3576f
5