LTC4097 데이터 시트보기 (PDF) - Linear Technology
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LTC4097 Datasheet PDF : 20 Pages
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LTC4097
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VDCIN = 5V, VUSBIN = 5V, HPWR = 5V, NTC = 0V, RIDC = 1kΩ, RIUSB = 2kΩ,
RITERM = 2kΩ unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VTRIKL
VUVDC
VUVUSB
VASD-DC
VASD-USB
VSUSP, VHPWR
RSUSP
RHPWR
V⎯C⎯H⎯R⎯G
ΔVRECHRG
tRECHRG
tITERM
RON-DC
RON-USB
TLIM
IVNTC
VVNTC
INTC
VNTC-COLD
VNTC-HOT
VNTC-DIS
Trickle Charge Threshold Voltage VBAT Rising
Hysteresis
DCIN Undervoltage Lockout
Voltage
From Low to High
Hysteresis
USBIN Undervoltage Lockout
Voltage
From Low to High
Hysteresis
VDCIN – VBAT Lockout Threshold
Voltage
VUSBIN – VBAT Lockout Threshold
Voltage
VIL, Logic Low Voltage
VIH, Logic High Voltage
SUSP Pulldown Resistance
VDCIN from High to Low, VBAT = 4.3V
VDCIN from Low to High, VBAT = 4.3V
VUSBIN from High to Low, VBAT = 4.3V
VUSBIN from Low to High, VBAT = 4.3V
HPWR Pulldown Resistance
⎯C⎯H⎯R⎯G Output Low Voltage
Recharge Battery Threshold
Voltage
I⎯C⎯H⎯R⎯G = 5mA
VFLOAT – VRECHRG
Recharge Comparator Filter Time VBAT from High to Low
Termination Comparator Filter Time IBAT Drops Below Termination Threshold
Power FET “ON” Resistance
(Between DCIN and BAT)
Power FET “ON” Resistance
(Between USBIN and BAT)
Junction Temperature in
Constant-Temperature Mode
VNTC Pin Current
VNTC Bias Voltage
NTC Input Leakage Current
Cold Temperature Fault
Threshold Voltage
VVNTC = 4.55V DCIN Powered
VVNTC = 4.8V USBIN Powered
IVNTC = 250µA
VNTC = 1V
Rising Threshold
Hysteresis
Hot Temperature Fault Threshold Falling Threshold
Voltage
Hysteresis
NTC Disable Threshold Voltage NTC Input Voltage to GND (Falling)
Hysteresis
● 2.8
2.9
3
V
135
mV
4
4.22
4.4
V
200
mV
3.8
4
4.2
V
200
mV
5
30
55
mV
100
mV
5
30
55
mV
150
mV
0.5
V
1.2
V
●
3.4
MΩ
●
3.4
MΩ
●
62
150
mV
70
100 130
mV
1.6
ms
3
ms
420
mΩ
470
mΩ
115
°C
30
mA
30
mA
4.25
5.5
V
0
±1
µA
0.765 • VVNTC
V
0.016 • VVNTC
V
0.349 • VVNTC
V
0.016 • VVNTC
V
0.017 • VVNTC
V
0.01 • VVNTC
V
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 LTC4097 is guaranteed to meet the 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: Failure to correctly solder the Exposed Pad of the package to the
PC board will result in a thermal resistance much higher than 60°C/W. See
Thermal Considerations.
Note 4: Supply current includes IDC and ITERM pin current (approximately
100µA each) but does not include any current delivered to the battery
through the BAT pin.
Note 5: Supply current includes IUSB and ITERM pin current
(approximately 100µA each) but does not include any current delivered to
the battery through the BAT pin.
Note 6: Guaranteed by long term current density limitations.
Note 7: VCC is greater of DCIN or USBIN
4097f
3
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