1510 查看數據表（PDF） - Linear Technology
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1510 Datasheet PDF : 16 Pages
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BLOCK DIAGRAM
LT1510/LT1510-5
+
0.7V
+
–
VSW
–
VCC
+
+
1.5V
GND
PWM
VBAT
C1
VC
60k
SHUTDOWN
200kHz
OSCILLATOR
S
VCC
BOOST
QSW
R
R
SW
SLOPE
B1
COMPENSATION
R2
R3
IPROG
CA1
R1
1k
IPROG
IBAT
=
500µA/A
SENSE
IBAT
RS1
BAT
0VP
CA2
VREF
VA
gm = 0.64Ω
VREF
2.465V
CPROG
PROG
RPROG
IPROG
CHARGING CURRENT IBAT
= (IPROG)(2000)
( ) =
2.465V
RPROG
(2000)
1510 BD
TEST CIRCUITS
VC
0.047µF
Test Circuit 1
LT1510
CA1
CA2
1k
60k
VREF
PROG
0.22µF
3.3k
RPROG
SENSE
IBAT
RS1
BAT
56µF
VBAT
1k
+
≈ 0.65V
+
LT1006
–
LT1010
20k
2N3055
1k
1510 TC01
7
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