Datasheet

LTC4063
3
4063fc
elecTrical characTerisTics
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 LTC4063EDD is guaranteed to meet performance
specifications from 0°C to 70°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: Failure to correctly solder the Exposed Pad of the package to the
PC board will result in a thermal resistance much higher than 40°C/W.
Note
4: Supply current includes PROG pin current and IDET pin current
(approximately 100µA each) but does not include any current delivered to
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
R
CHGEN
CHGEN Pin Pull-Down Resistor
l
1.2 2 5 MΩ
V
CT
Charge Termination Mode Threshold
Voltage
V
TIMER
from High to Low
Hysteresis
0.4 0.7
100
1 V
mV
V
UT
User Termination Mode Threshold Voltage V
TIMER
from Low to High
Hysteresis
4.15 4.1
100
4.5 V
mV
I
DETECT
Charge Current Detection Threshold R
DET
= 1k, 0°C ≤ T
A
≤ 85°C
R
DET
= 2k, 0°C ≤ T
A
≤ 85°C
R
DET
= 10k, 0°C ≤ T
A
≤ 85°C
R
DET
= 20k, 0°C ≤ T
A
≤ 85°C
90
45
8.5
4
100
50
10
5
110
55
11.5
6
mA
mA
mA
mA
∆V
RECHRG
Recharge Threshold Voltage V
FLOAT
– V
RECHRG
, 0°C ≤ T
A
≤ 85°C 75 100 125 mV
t
TERM
Termination Comparator Filter Time Current Termination Mode 1 1.5 2.2 ms
t
RECHRG
Recharge Comparator Filter Time 3 7 14 ms
t
TIMER
Charge Cycle Time C
TIMER
= 0.1µF 2.55 3 3.45 Hour
t
SS
Soft-Start Time I
BAT
from 0 to I
CHG
100 µs
T
LIM
Junction Temperature in Constant
Temperature Mode
105 °C
R
ON
Power FET On-Resistance
(Between V
CC
and BAT)
375 mΩ
V
BAT-LDO
LDO Supply Voltage (BAT) 2.65 4.4 V
I
BAT-LDO
LDO Supply Current (from BAT) V
CC
< V
BAT
, I
OUT
= 0mA
V
CC
> V
BAT
, I
OUT
= 0mA (Note 6)
15
9
25
18
µA
µA
I
BAT-LDO-SD
LDO Supply Current in Shutdown V
BAT
= 4.4V 2.5 5 µA
V
FB
FB Regulated Voltage V
BAT
= 3.7V, I
OUT
= 1mA
l
784 800 816 mV
V
FB(LINE)
V
FB
Line Regulation V
BAT
= 2.65V to 4.4V, I
OUT
= 1mA
l
1 4 mV
V
FB(LOAD)
V
FB
Load Regulation I
OUT
= 1mA to 100mA, V
BAT
= 4.4V
l
1 4 mV
V
LDOEN
LDOEN Input Threshold Voltage (Rising) LDOEN Rising, V
BAT
= 4.4V
Hysteresis
0.4 0.7
100
1 V
mV
R
LDOEN
LDOEN Pin Pull-Down Resistor
l
1.2 2 5 MΩ
V
DO
LDO Dropout Voltage I
OUT
= 100mA, V
OUT
= 3V 125 200 mV
V
LDOUVLO
LDO Undervoltage Lockout Threshold V
BAT
from High to Low
Hysteresis
2.45 2.55
100
2.65 V
mV
I
FB
FB Pin Current –25 0 25 nA
I
SC
Short-Circuit Output Current V
OUT
= 0V 500 mA
V
NO(RMS)
Output Voltage Noise V
OUT
= 3V, I
OUT
= 100mA, C
OUT
= 2.2µF,
10Hz ≤ f ≤ 100kHz
135 µV
RMS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 5V, unless otherwise noted.
the battery through the BAT pin (approximately 100mA).
Note 5: Does not include LDO supply current.
Note
6: The LDO is partially powered from V
CC
, thus reducing the supply
current from the BAT pin.
Note
7: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions.
Overtemperature protection will become active at a junction temperature
greater than the maximum operating temperature. Continuous operation
above the specified maximum operating junction temperature may impair
device reliability.
Note
8: Defined by long term current density limitations.