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LTC4097 Datasheet(PDF) 3 Page - Linear Technology

Part # LTC4097
Description  USB/Wall Adapter Standalone Li-Ion/Polymer Battery Charger
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4097 Datasheet(HTML) 3 Page - Linear Technology

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LTC4097
3
4097f
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
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VTRIKL
Trickle Charge Threshold Voltage
VBAT Rising
Hysteresis
2.8
2.9
135
3V
mV
VUVDC
DCIN Undervoltage Lockout
Voltage
From Low to High
Hysteresis
4
4.22
200
4.4
V
mV
VUVUSB
USBIN Undervoltage Lockout
Voltage
From Low to High
Hysteresis
3.8
4
200
4.2
V
mV
VASD-DC
VDCIN – VBAT Lockout Threshold
Voltage
VDCIN from High to Low, VBAT = 4.3V
VDCIN from Low to High, VBAT = 4.3V
530
100
55
mV
mV
VASD-USB
VUSBIN – VBAT Lockout Threshold
Voltage
VUSBIN from High to Low, VBAT = 4.3V
VUSBIN from Low to High, VBAT = 4.3V
530
150
55
mV
mV
VSUSP, VHPWR
VIL, Logic Low Voltage
0.5
V
VIH, Logic High Voltage
1.2
V
RSUSP
SUSP Pulldown Resistance
3.4
RHPWR
HPWR Pulldown Resistance
3.4
V⎯C⎯H⎯R⎯G
⎯C⎯H⎯R⎯G Output Low Voltage
I⎯C⎯H⎯R⎯G = 5mA
62
150
mV
ΔVRECHRG
Recharge Battery Threshold
Voltage
VFLOAT – VRECHRG
70
100
130
mV
tRECHRG
Recharge Comparator Filter Time VBAT from High to Low
1.6
ms
tITERM
Termination Comparator Filter Time IBAT Drops Below Termination Threshold
3
ms
RON-DC
Power FET “ON” Resistance
(Between DCIN and BAT)
420
RON-USB
Power FET “ON” Resistance
(Between USBIN and BAT)
470
TLIM
Junction Temperature in
Constant-Temperature Mode
115
°C
IVNTC
VNTC Pin Current
VVNTC = 4.55V DCIN Powered
VVNTC = 4.8V USBIN Powered
30
30
mA
mA
VVNTC
VNTC Bias Voltage
IVNTC = 250µA
4.25
5.5
V
INTC
NTC Input Leakage Current
VNTC = 1V
0
±1
µA
VNTC-COLD
Cold Temperature Fault
Threshold Voltage
Rising Threshold
Hysteresis
0.765 • VVNTC
0.016 • VVNTC
V
V
VNTC-HOT
Hot Temperature Fault Threshold
Voltage
Falling Threshold
Hysteresis
0.349 • VVNTC
0.016 • VVNTC
V
V
VNTC-DIS
NTC Disable Threshold Voltage
NTC Input Voltage to GND (Falling)
Hysteresis
0.017 • VVNTC
0.01 • VVNTC
V
V
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.
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


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