LTC3577 Datasheet, PDF (9/52 Pages) Linear Technology – Highly Integrated 6-Channel Portable PMIC

LTC3577/LTC3577-1
ELECTRICAL CHARACTERISTICS Pushbutton Controller. The l denotes the specifications which apply
over the full operating temperature range, otherwise specifications are at T_A = 25°C. V_OUT = 3.8V, unless otherwise noted.
SYMBOL
PARAMETER
Pushbutton Pin (ON)
CONDITIONS
MIN
TYP
MAX UNITS
V_OUT
Pushbutton Operating Supply Range (Note 9)
l 2.7
5.5
V
V_OUT UVLO
V_{ON_TH}
V_OUT Falling
V_OUT Rising
ON Threshold Rising
ON Threshold Falling
Pushbutton is Disabled Below V_OUT UVLO
2.5
2.7
V
2.8
2.9
V
0.8
1.2
V
0.4
0.7
V
I_ON
ON Input Current
V_ON = V_OUT
V_ON = 0V
–1
1
μA
–4
–9
–14
μA
Power-On Input Pin (PWR_ON)
V_{PWR_ON}
PWR_ON Threshold Rising
PWR_ON Threshold Falling
0.8
1.2
V
0.4
0.7
V
I_{PWR_ON}
PWR_ON Input Current
Status Output Pins (PBSTAT, WAKE, PG_DCDC)
V_{PWR_ON} = 3V
–1
1
μA
I_PBSTAT
PBSTAT Output High Leakage Current
V_PBSTAT
PBSTAT Output Low Voltage
I_WAKE
Wake Output High Leakage Current
V_WAKE
Wake Low Output Voltage
I_{PG_DCDC}
PG_DCDC Output High Leakage Current
V_{PG_DCDC}
PG_DCDC Output Low Voltage
V_{THPG_DCDC} PG_DCDC Threshold Voltage
Pushbutton Timing Parameters
t_{ON_PBSTAT1}
t_{ON_PBSTAT2}
t_{ON_WAKE}
t_{ON_HR}
ON Low Time to PBSTAT Low
ON High to PBSTAT High
ON Low Time to WAKE High
ON Low to Hard Reset
t_{PBSTAT_PW} PBSTAT Minimum Pulse Width
t_{WAKE_EXTP} WAKE High from USB or Wall Present
t_{WAKE_DCDC} WAKE High to Buck1 Enable
t_{PWR_ONH}
PWR_ON High to WAKE High
t_{PWR_ONL}
PWR_ON Low to WAKE Low
t_{PWR_ONBK1} PWR_ON Power-Up Blanking
t_{PWR_ONBK2} PWR_ON Power-Down Blanking
t_{PG_DCDCH}
Bucks in Regulation to PG_DCDC High
t_{PG_DCDCL}
Bucks Disabled to PG_DCDC Low
V_PBSTAT = 3V
I_PBSTAT = 3mA
V_WAKE = 3V
I_WAKE = 3mA
V_{PG_DCDC} = 3V
I_{PG_DCDC} = 3mA
(Note 13)
WAKE High
PBSTAT Low > t_{PBSTAT_PW}
WAKE Low > t_{PWR_ONBK2}
Hard Reset = All Supplies Disabled
WAKE Low > t_{PWR_ONBK2}
WAKE Low > t_{PWR_ONBK2}
WAKE Low > t_{PWR_ONBK2}
WAKE High > t_{PWR_ONBK1}
WAKE Rising Until PWR_ON Low Recognized
WAKE Falling Until PWR_ON High Recognized
All Bucks Within PG_DCDC Threshold Voltage
All Bucks Disabled
–1
1
μA
0.1
0.4
V
–1
1
μA
0.1
0.4
V
–1
1
μA
0.1
0.4
V
–8
%
50
ms
900
μs
400
ms
4.2
5
5.8 Seconds
40
50
60
ms
100
ms
5
μs
50
ms
50
ms
5
Seconds
1
Seconds
230
ms
44
μs
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC3577E/LTC3577E-1 are guaranteed to meet performance
specifications from 0°C to 85°C. Specifications over the –40°C to 85°C
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
Note 3: This IC includes over temperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperatures will exceed 110°C when over temperature protection is
active. Continuous operation above the specified maximum operating
junction temperature may result in device degradation or failure.
3577f
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