Datasheet

10
LTC1541/LTC1542
15412fd
CAPACITOR VALUE (µF)
0.001
0.1
RESISTOR VALUE (kΩ)
10
1000
0.01 0.1 101
1541/42 F02
1
100
Figure 2. Damping Resistance vs Bypass Capacitor Value
8
7
4
LTC1541
1541/42 F03a
6 REF
5 COMPIN
+
COMPOUT
V
CC
V
SS
R1
430Ω
C1
1µF
×1
+
–
5V TO 8V
COMP
Figure 3a. Reference Transient Response Test Circuit
7.5Ω
10W
DALE
HLM-10
12V
5AHR
GEL CELL
4
8
+
–
1
1/2
LTC1541
3
2
7
5
6
1541/42 TA06
+
–
1/2
LTC1541
1M
VN2222
Si9405
1M
3.65M
1A
SOLAR
ARRAY
6.8V
ZENER
1N754
340k
TIP121
8M
2A
FUSE
1M
V
REF
= 1.2V
(INTERNAL)
LOAD
Shunt Battery Charger with Low-Battery Load Disconnect
1541/42 F04
R2
2pF TO 10pF
–
+
OP AMP
AMPIN
+
AMPOUT
R1
Figure 4. Compensation for Feedback Node Capacitance
8V
5V
V
REF
OUT
V
+
2mV/DIV
2ms/DIV LTC1541 • F03b
Figure 3b. Reference and Comparator Output Transient Response
APPLICATIO S I FOR ATIO
WUUU
TYPICAL APPLICATIO S
U