LTC4061-4.4 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
LTC4061-4.4 Datasheet PDF : 20 Pages
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LTC4061-4.4
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 5V, unless otherwise noted.
SYMBOL
VUT
IDETECT
∆VRECHRG
tSS
tTERM
tRECHRG
tTIMER
RC/5
VC/5
VNTC-HOT
VNTC-COLD
VNTC-DIS
fCHRG
TLIM
RON
PARAMETER
User Termination Mode Threshold
Voltage
Charge Current Detection Threshold
Recharge Threshold Voltage
Soft-Start Time
Termination Comparator Filter Time
Recharge Comparator Filter Time
Charge Cycle Time
C/5 Pin Pull-Down Resistor
C/5 Input Threshold Voltage
NTC Pin Hot Threshold Voltage
NTC Pin Cold Threshold Voltage
NTC Pin Disable Threshold Voltage
NTC Fault Pulsing Frequency
Junction Temperature in Constant
Temperature Mode
Power FET “ON” Resistance
(Between VCC and BAT)
CONDITIONS
VTIMER from Low to High
Hysteresis
RDET = 1k, 0 ≤ TA ≤ 85°C
RDET = 2k, 0 ≤ TA ≤ 85°C
RDET = 10k, 0 ≤ TA ≤ 85°C
RDET = 20k, 0 ≤ TA ≤ 85°C
VFLOAT – VRECHRG, 0 ≤ TA ≤ 85°C
IBAT from 0 to ICHG
Current Termination Mode
CTIMER = 0.1µF
C/5 Rising, 4.5V < VCC < 8V
Hysteresis
VNTC Falling
VNTC Rising
VNTC Rising
VNTC Falling
VNTC Falling
Hysteresis
Current/User Termination Mode
Time Termination Mode CTIMER = 0.1µF
VBAT = 4V, ICC = 175mA, RPROG = 2k
MIN TYP MAX
3.9
4.2
50
90
100
110
45
50
55
8
10
12
3.8
5
6.2
65
100
135
100
0.8
1.5
2.5
3
7
14
2.55
3
3.45
●2
3.4
5
0.4
0.7
1
70
0.35 • VCC
0.36 • VCC
0.76 • VCC
0.75 • VCC
70
85
100
50
1.5
1
1.5
2
105
UNITS
V
mV
mA
mA
mA
mA
mV
µs
ms
ms
hr
MΩ
V
mV
V
V
V
V
mV
mV
Hz
Hz
°C
375
mΩ
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 LTC4061-4.4 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
the battery through the BAT pin (approximately 100mA).
Note 5: 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.
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