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LTC4095EDC Datasheet(PDF) 1 Page - Linear Technology

Part # LTC4095EDC
Description  Standalone USB Li-Ion/Polymer Battery Charger in 2mm2mm DFN
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4095EDC Datasheet(HTML) 1 Page - Linear Technology

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LTC4095
1
4095fa
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
Standalone USB
Li-Ion/Polymer Battery
Charger in 2mm × 2mm DFN
The LTC
®4095 is a complete constant-current/constant-
voltage linear charger for single-cell lithium-ion/polymer
batteries. Its small 2mm × 2mm DFN package and low
external component count make the LTC4095 especially
well-suited for portable USB power applications.
Up to 950mA of charge current may be programmed via a
single resistor from the PROG pin to ground. The HPWR
pin allows the charge current to be set at 20% or 100% of
its full-scale programmed value. An internal safety timer
terminates charge current. The final float voltage is preset
to 4.2V and held to a tight 0.5% tolerance. Also featured
is an NTC thermistor input to monitor battery temperature
while charging, a C/10 current detection output, automatic
recharge, bad-battery detection and low-battery trickle
charge. A thermal feedback loop regulates the charge
current to limit the die temperature during high power
operation or high ambient thermal conditions.
The LTC4095 is available in a tiny, low profile (0.75mm)
8-lead 2mm × 2mm DFN package.
Full-Featured Standalone USB Li-Ion/Polymer
Battery Charger
100mA to 950mA Programmable Charge Current
C/10 Charge Current Detection Output
Internal Safety Timer Termination
NTC Thermistor Input for Temperature Qualified
Charging
Preset 4.2V Float Voltage with 0.5% Accuracy
Constant-Current/Constant-Voltage Operation with
Thermal Feedback
Charge Current Monitor Output for Gas Gauging
Automatic Recharge
Bad-Battery Detection
8.5µA Input Supply Current in Suspend Mode
Tiny 8-Lead (2mm × 2mm) DFN Package
PDAs
Media Players
Cellular Phones
Other Portable Electronics
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Protected by U.S. Patents, including 6522118, 6570372, 6700364.
+
IN
4095 TA01a
Li-Ion
BATTERY
RPROG
1.74k
IN
4.3V TO 5.5V
UP TO 7V
TRANSIENTS
CIN
1
µF
LTC4095
CHRG
HPWR
BAT
NTC
PROG
SUSP
GND
500mA Single-Cell Li-Ion Charger


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