LTC3554 LINER [Linear Technology], LTC3554 Datasheet - Page 5

• Manufacturer Part Number: LTC3554
• Description: Micropower USB Power Manager with Li-Ion Charger and Two Step-Down Regulators
• Manufacturer: LINER [Linear Technology]

PUSHBUTTON INTERFACE ELECTRICAL CHARACTERISTICS
SYMBOL
Pushbutton Pin (ON)
V
V
I
R
Logic Input Pins (PWR_ON1, PWR_ON2)
V
I
Status Output Pins (PBSTAT, PGOOD)
I
V
I
V
V
Pushbutton Timing Parameters (Note 11)
t
t
t
t
t
t
t
t
t
t
t
t
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.
The
V
PWR_ONx
PBSTAT
PGOOD
PBSTAT_PW
EXTPWR
PON_UP
PON_DIS
PUP
PDN
PGOODH
PGOODL
ON
ON_PBSTATL
ON_PBSTATH
ON_PUP
ON_HR
CC_PB
ON_TH
PWR_ONx
PBSTAT
PGOOD
PB_PU
THPGOOD
BAT
l
= 3.8V, unless otherwise noted.
denotes specifi cations that apply over the full operating temperature range, otherwise specifi cations are at T
PARAMETER
Pushbutton Operating Supply Range
ON Threshold Rising
ON Threshold Falling
ON Input Current
Pushbutton Pull-Up Resistance
PWR_ONx Threshold Rising
PWR_ONx Threshold Falling
PWR_ONx Input Current
PBSTAT Output High Leakage Current
PBSTAT Output Low Voltage
PGOOD Output High Leakage Current
PGOOD Output Low Voltage
PGOOD Threshold Voltage
Minimum ON Low Time to Cause PBSTAT
Low
Delay from ON High to PBSTAT High
Minimum ON Low Time to Enter
Power-Up (PUP1 or PUP2) State
Minimum ON Low Time to Hard Reset
PBSTAT Minimum Pulse Width
Power-Up from USB Present to Power-Up
(PUP1 or PUP2) State
Any PWR_ONx High to Power-On State
PWR_ONx Low to Buckx Disabled
Power-Up (PUP1 or PUP2) State Duration
Power-Down (PDN1 or PDN2) State
Duration
Bucks in Regulation to PGOOD High
Bucks Disabled to PGOOD Low
CONDITIONS
(Notes 4 , 9)
V
Pull-Up to V
V
I
V
I
(Note 10)
ON Brought Low During Power-On (PON) or
Power-Up (PUP1, PUP2) States
Power-On (PON) State, After PBSTAT Has
Been Low for at Least t
Starting in the Hard Reset (HR) or Power-Off
(POFF) States
ON Brought Low During the Power-On (PON)
or Power-Up (PUP1, PUP2) States
Power-On (PON) or Power-Up (PUP1, PUP2)
States
Starting in the Hard Reset (HR) or Power-Off
(POFF) States
Starting with Both PWR_ONx Low in the
Power-Off (POFF) State
All Enabled Bucks within PGOOD Threshold
Voltage
All Bucks Disabled
PBSTAT
PGOOD
ON
PBSTAT
PGOOD
= V
= 3mA
CC
= 3mA
= 3V
= 3V
(Note 4)
CC
(Note 4)
Note 2. The LTC3554 is guaranteed to meet performance specifi cations
from 0°C to 85°C. Specifi cations over the –40°C to 85°C operating
temperature range are assured by design, characterization and
correlation with statistical process controls.
PBSTAT_PW
l
MIN
200
2.7
0.4
0.4
–1
–1
–1
–1
40
4
TYP
400
900
400
900
230
100
100
0.1
0.1
–8
50
50
5
1
5
1
LTC3554
A
MAX
650
= 25°C.
5.5
0.4
0.4
1.2
1.2
1
1
1
1
6
UNITS
5
3554f
kΩ
ms
ms
ms
ms
ms
μA
μA
μA
μA
μs
μs
μs
μs
%
V
V
V
V
V
V
V
s
s
s