LTC3577-4_15 Datasheet, PDF (9/52 Pages) Linear Technology – Highly Integrated Portable Product PMIC

LTC3577-3/LTC3577-4
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, EXTPWR, PGOOD)
V_{PWR_ON} = 3V
–1
1
μA
I_PBSTAT
V_PBSTAT
I_EXTPWR
V_EXTPWR
PBSTAT Output High Leakage Current
PBSTAT Output Low Voltage
EXTPWR Pin Input Current
EXTPWR Pin Output Low Voltage
V_PBSTAT = 3V
I_PBSTAT = 3mA
V_EXTPWR = 3V
I_EXTPWR = 2mA
–1
1
μA
0.1
0.4
V
0
1
μA
0.15
0.4
V
I_PGOOD
PGOOD Output High Leakage Current
V_PGOOD
PGOOD Output Low Voltage
V_THPGOOD
PGOOD Threshold Voltage
Pushbutton Timing Parameters
t_{ON_PBSTAT1}
t_{ON_PBSTAT2}
ON Low Time to PBSTAT Low
ON High to PBSTAT High
t_{PBSTAT_PW}
t_{ON_PUP}
t_{ON_RST}
PBSTAT Minimum Pulse Width
ON Low Time for Power-Up
ON Low to PGOOD Reset Low
t_{ON_RST_PW} PGOOD Reset Low Pulse Width
t_{PUP_PDN}
Minimum Time from Power Up to Down
t_{PDN_PUP}
Minimum Time from Power Down to Up
t_{PWR_ONH}
PWR_ON High to Power-Up
t_{PWR_ONL}
PWR_ON Low to Power-Down
t_{PWR_ONBK1} PWR_ON Power-Up Blanking
t_{PWR_ONBK2} PWR_ON Power-Down Blanking
t_PGOODH
From Regulation to PGOOD High
t_PGOODL
Bucks Disabled to PGOOD Low
t_{LDO2_BK1}
LDO2 Enable to Buck Enable
V_PGOOD = 3V
I_PGOOD = 3mA
(Note 13)
PBSTAT Low > t_{PBSTAT_PW}
PWR_ON Low Recognized from Power-Up
PWR_ON High Recognized from Power-Down
Buck1, 2 and LDO1 Within PGOOD Threshold
Bucks Disabled
–1
1
μA
0.1
0.4
V
–8
%
50
ms
900
μs
40
50
ms
50
ms
12
14
16.5 Seconds
1.8
ms
1
Seconds
1
Seconds
50
ms
50
ms
1
Seconds
1
Seconds
230
ms
44
μs
12.5
14.5
17.5
ms
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 LTC3577-3/LTC3577-4 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.
Note 4: V_CC is the greater of V_BUS, V_OUT or BAT.
Note 5: Total input current is the sum of quiescent current, I_BUSQ, and
measured current given by V_CLPROG/R_CLPROG • (h_CLPROG + 1).
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