參數(shù)資料
型號： LTC4067EDE#TR
廠商： LINEAR TECHNOLOGY CORP
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO12
封裝： 4 X 3 MM, PLASTIC, MO-229WGED, DFN-12
文件頁數(shù)： 15/20頁
文件大?。?/td> 223K
代理商： LTC4067EDE#TR
LTC4067
4
4067f
The ● denotes the specications which apply over the full operating
temperature range (Note 3), otherwise specications 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.
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: 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 specications
from 0°C to 85°C. Specications over the –40°C to 85°C ambient
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
Note 4: Specication is guaranteed by design and not 100% tested in
production.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
NTC
INTC
NTC Input Leakage Current
VNTC = 2.5V
0
±1
μA
VCOLD
Cold Temperature Fault Threshold
Voltage
Rising Threshold
Hysteresis
0.725 VIN 0.733 VIN
0.02 VIN
0.741 VIN
V
VHOT
Hot Temperature Fault Threshold
Voltage
Falling Threshold
Hysteresis
0.287 VIN 0.29 VIN
0.02 VIN
0.293 VIN
V
VDIS
NTC Disable Voltage
NTC Input voltage to GND (Falling)
Hysteresis
●
80
100
30
120
mV
Logic
FMOD
Serrated Fault Pulse Modulation
Frequency at CHRG Pin
(VDIS < VNTC < VHOT) or (VNTC > VCOLD)
VBAT < 2.9V for Longer Than Trickle Charge Time
1.5
6
Hz
FPW
Serrated Fault Pulse Width at CHRG
Pin
(VDIS < VNTC < VHOT) or (VNTC > VCOLD)
VBAT < 2.9V for Longer Than Trickle Charge Time
1.33
2.62
μs
FTF
Serrated Fault Pulse Frequency at
CHRG Pin
(VDIS < VNTC < VHOT) or (VNTC > VCOLD) or
VBAT < 2.9V for Longer Than Trickle Charge Time
35
kHz
VOL
Output Low Voltage (CHRG)
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
(OVI Pin)
VOVI Rising Threshold
Hysteresis
5.8
6
250
6.2
V
mV
VPROG,SD
Shutdown Threshold
VCC – VPROG Rising (Note 6)
Hysteresis
1.4
50
V
mV
IPROG,PULLUP PROG Pin Shutdown Sense Current VPROG = 1V
3.5
μA
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 specied 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.
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