LTC4067 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC4067' PDF : 20 Pages View PDF
LTC4067
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range (Note 3), otherwise specifications are at TA = 25°C. Note 2 unless otherwise noted, VIN = 5V, VBAT = 3.7V,
VILIM0 = 0V, VILIM1 = 0V, RPROG = 2k, RCLPROG = 2k, VOVI = 0V, VNTC = VIN/2.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
NTC
INTC
VCOLD
VHOT
VDIS
NTC Input Leakage Current
Cold Temperature Fault Threshold
Voltage
Hot Temperature Fault Threshold
Voltage
NTC Disable Voltage
VNTC = 2.5V
Rising Threshold
Hysteresis
Falling Threshold
Hysteresis
NTC Input voltage to GND (Falling)
Hysteresis
0
±1
μA
0.725 • VIN 0.733 • VIN 0.741 • VIN
V
0.02 • VIN
V
0.287 • VIN 0.29 • VIN 0.293 • VIN
V
0.02 • VIN
V
● 80
100
120
mV
30
mV
Logic
FMOD
Serrated Fault Pulse Modulation
Frequency at ⎯C⎯H⎯R⎯G Pin
(VDIS < VNTC < VHOT) or (VNTC > VCOLD)
VBAT < 2.9V for Longer Than Trickle Charge Time
1.5
Hz
6
Hz
FPW
Serrated Fault Pulse Width at ⎯C⎯H⎯R⎯G (VDIS < VNTC < VHOT) or (VNTC > VCOLD)
Pin
VBAT < 2.9V for Longer Than Trickle Charge Time
1.33
μs
2.62
μs
FTF
Serrated Fault Pulse Frequency at (VDIS < VNTC < VHOT) or (VNTC > VCOLD) or
⎯C⎯H⎯R⎯G Pin
VBAT < 2.9V for Longer Than Trickle Charge Time
35
kHz
VOL
Output Low Voltage (⎯C⎯H⎯R⎯G)
ISINK = 5mA
●
1.5
V
VIH
Enable Input High Voltage
ILIM0, ILIM1 Pin Low to High
● 1.2
V
VlL
Enable Input Low Voltage
ILIM0, ILIM1 Pin High to Low
●
0.4
V
IPULLDN
Logic Input Pull Down Current
ILIM0, ILIM1
2
μA
VOVTH
Overvoltage Protection Threshold VOVI Rising Threshold
(OVI Pin)
Hysteresis
5.8
6
6.2
V
250
mV
VPROG,SD Shutdown Threshold
VCC – VPROG Rising (Note 6)
Hysteresis
1.4
V
50
mV
IPROG,PULLUP PROG Pin Shutdown Sense Current VPROG = 1V
3.5
μA
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: Current into a pin is positive and current out of a pin is negative.
All Voltages referenced to GND
Note 3: The LTC4067 is guaranteed to meet performance specifications
from 0°C to 85°C. Specifications over the –40°C to 85°C ambient
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
Note 4: Specification is guaranteed by design and not 100% tested in
production.
Note 5: This IC includes over-temperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature exceeds 125°C when over-temperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may result in device degradation or failure.
Note 6: VCC is the greater of VIN, VOUT or VBAT.
Note 7: Accuracy of programmed current may degrade for currents greater
than 1A.
Note 8: CLPROG soft-start scales with inverse of CLPROG resistor. If
RCLPROG = 2k, then ISS = 0.6mA/μs.
4067f
4
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