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LTC4081EDD-TRPBF Datasheet(PDF) 10 Page - Linear Technology

Part # LTC4081EDD-TRPBF
Description  500mA Li-Ion Charger with NTC Input and 300mA Synchronous Buck
Download  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4081EDD-TRPBF Datasheet(HTML) 10 Page - Linear Technology

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LTC4081
10
4081f
BLOCK DIAGRA
Figure 1. LTC4081 Block Diagram
–+
–+
6
MP4
MP3
MP1
X1
X400
VCC
R1
R2
CHARGER
ENABLE
CHRG
PROG
11
GND
4081 BD
1V
0.1V
PROG
C1
0.1V
D3
D2
D1
1.22V
CA
MA
VA
1
10
7
2
BAT
SW
0.8V
L1
VOUT
COUT
R8
CPL
FB
COUNTER
LOGIC
CHARGER
OSCILLATOR
CHARGE
CONTROL
2.9V
BAT
BADBAT
UVLO
SUSPEND
C3
C2
EN_CHRG
REN
0.82V
CHARGER
SHUTDOWN
3
C6
0.82V
ENABLE BUCK
EN_BUCK
MODE
9
C7
0.82V
8
PWM
CONTROL
AND DRIVE
2.25MHz
BUCK
OSCILLATOR
ERROR
AMP
LINEAR BATTERY CHARGER
SYNCHRONOUS BUCK CONVERTER
MN1
R7
MP2
RPROG
+
115
°C
TDIE
TA
PULSE
LOGIC
4
RNOM
RNTC
VCC
VCC
+
TOO COLD
TOO HOT
NTC_EN
R9
C8
C9
C10
R10
R11
R12
5
NTC
+
+
C4
C5
VBAT + 80mV
VCC
3.6V
T


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