LTC4090(RevA) データシートの表示（PDF） - Linear Technology
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LTC4090 Datasheet PDF : 28 Pages
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LTC4090/LTC4090-5
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. HVIN = HVEN = 12V, BOOST = 17V, VIN = HPWR = 5V, VBAT = 3.7V,
RPROG = 100k, RCLPROG = 2k and SUSP = 0V, unless otherwise noted.
SYMBOL
NTC
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
IVNTC
VVNTC
INTC
VCOLD
VHOT
VDIS
VNTC Pin Current
VNTC Bias Voltage
NTC Input Leakage Current
Cold Temperature Fault Threshold
Voltage
Hot Temperature Fault Threshold
Voltage
NTC Disable Threshold Voltage
VNTC = 2.5V
IVNTC = 500μA
NTC = 1V
Rising NTC Voltage
Hysteresis
Falling NTC Voltage
Hysteresis
Falling NTC Voltage
Hysteresis
● 1.4
2.5
3.5
mA
● 4.4
4.85
V
0
±1
μA
0.738 • VNTC
V
0.02 • VNTC
V
0.29 • VNTC
V
0.01 • VNTC
V
● 75
100
125
mV
35
mV
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 LTC4090/LTC4090-5 are guaranteed to meet performance
specifications from 0°C to 85°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: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperatures will exceed 110°C when overtemperature protection is
active. Continuous operation above the specified maximum operating
junction temperature may result in device degradation or failure.
Note 4: VCC is the greater of VIN, VOUT, and VBAT
Note 5: Guaranteed by long term current density limitations.
Note 6: Total input current is equal to this specification plus 1.002 • IBAT
where IBAT is the charge current.
Note 7: Accuracy of programmed current may degrade for currents
greater than 1.5A.
Note 8: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the switch.
Note 9: Absolute Maximum Voltage at HVIN and HVEN pins is for non-
repetative 1 second transients; 40V for continuous operation.
TYPICAL PERFORMANCE CHARACTERISTICS
VFLOAT Load Regulation
4.30
RPROG = 34k
4.25
4.20
4.15
4.10
4.05
4.00
0 200 400 600 800 1000
IBAT (mA)
4090 G01
Battery Regulation (Float)
Voltage vs Temperature
4.220
VIN = 5V
4.215 IBAT = 2mA
4.210
4.205
4.200
4.195
4.190
4.185
4.180
–50 –25 0
25 50 75 100
TEMPERATURE (°C)
4090 G02
Battery Current and Voltage vs
Time (LTC4090)
5
1500
4
VBAT
1200
VOUT
VCHRGB
3
IBAT
900
2
600
C/10
1250mAh
1 CELL
HVIN = 12V
RPROG = 50k
0
0
50
TERMINATION 300
100
TIME (MIN)
0
150
200
4090 G03
4090fa
5
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