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LTC4065L Datasheet(PDF) 11 Page - Linear Technology

Part # LTC4065L
Description  Standalone 250mA Li-Ion Battery Charger in 2 x 2 DFN
PDF  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4065L Datasheet(HTML) 11 Page - Linear Technology

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11
LTC4065L/LTC4065LX
4065lxfa
IS EN > SHUTDOWN
THRESHOLD?
ENABLE
CHRG HIGH IMPEDANCE
SHUTDOWN MODE
IF VCC > 3.6V AND
VCC > VBAT + 80mV?
UVLO
UVLO MODE
1/10 FULL CHARGE CURRENT
CHRG STRONG PULL-DOWN
TRICKLE CHARGE MODE*
FULL CHARGE CURRENT
CHRG STRONG PULL-DOWN
FAST CHARGE MODE
IS VBAT < 2.9V?
DEFECTIVE BATTERY
IS VBAT < 4.1V?
RECHARGE
NO CHARGE CURRENT
CHRG PULSES (2Hz)
BAD BATTERY MODE
FULL CHARGE CURRENT
CHRG STRONG PULL-DOWN
RECHARGE MODE
NO CHARGE CURRENT
CHRG HIGH IMPEDANCE
STANDBY MODE
CHRG HIGH IMPEDANCE
NO
YES
YES
YES
NO
NO
4065L F02
VBAT ≤ 2.9V
1/4 CHARGE CYCLE
(1.125 HOURS)
VCC < 3V
OR
EN > SHDN
THRESHOLD
CHARGE CYCLE
(4.5 HOURS)
1/2 CHARGE CYCLE
(2.25 HOURS)
2.9V < VBAT < 4.1V
VBAT > 4.1V
YES
NO
POWER
ON
*LTC4065L ONLY; LTC4065LX HAS FULL CHARGE CURRENT.
OPERATIO
Figure 2. State Diagram of LTC4065L Operation



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