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LT1505 Просмотр технического описания (PDF) - Linear Technology
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LT1505
Constant-Current/Voltage High Efficiency Battery Charger
Linear Technology
LT1505 Datasheet PDF : 16 Pages
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LT1505
BLOCK DIAGRAM
(LT1505)
V
IN
V
CC
V
CC
UV
7
V
CC
24
V
IN
SHDN
5
SYNC 4
CAP 12
FLAG 13
+
6.7V
–
E2
+
++
BAT
0.2V
E1
–
+
+
6.7V
E8
–
A13
E3
SHUTDOWN
GBIAS
+
7V
–
E5
+
–
4U
E4
+
+
1.3V
SHUTDOWN
–
SW
E7
A4
+
+
4V
A6
SR
8
INFET
V
CC
7.8V
Q4
+
A2
+–
7V
BGATE
+
2.5V
–
A3
+
A5
A8
A7
ONE
SHOT
OSC
200k
I
VA
4
PWM
I
PROG
VR
S1
+
0.02V
+
A12
–
SLOPE COMP
E6
+
3.3V
C1
–+
B1
R2
R3
A10
Q2
Q3
Q1
I
PROG
R1
1k
I
VA
VA
CA2
R8
75k
V
REF
CL1*
BOOST
1
TGATE
A1
2
50k
SW
3
+
8.9V
GBIAS
26
C3
4.7
µ
F
BGATE
A9
27
50k
PGND
28
BOOSTC
25
SPIN
22
SENSE
21
CA1
I
PROG
BAT
23
BAT2
20
A11
R4
50.55k
R5
21k
V
REF
2.465V
92mV
+
3CELL
16
V
FB
17
R6
0.33k
R7
12.3k
14 4.1V
4.2V
15
CLP
9
CLN
10
V
CC
C2
1
µ
F
M1
L1
10
µ
H
I
BAT
+
VR
S1
–
R
S1
+
12.6V
BATTERY
M2
R
S3
R
S2
V
IN
R
S
V
CC
6
AGND
18
V
C
19
PROG
11
COMP1
1505 BD
SYSTEM
LOAD
C
PROG
R
PROG
*LT1505 ONLY. SEE PIN FUNCTIONS
FOR LT1505-1 CONNECTIONS
8
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