10

LTC1541/LTC1542

15412fd

CAPACITOR VALUE (

µF)

0.001

0.1

10

1000

0.01

0.1

10

1

1541/42 F02

1

100

Figure 2. Damping Resistance vs Bypass Capacitor Value

8

7

4

LTC1541

1541/42 F03a

6 REF

5

COMPOUT

R1

430

Ω

C1

1

µF

×1

+

–

5V TO 8V

COMP

Figure 3a. Reference Transient Response Test Circuit

7.5

Ω

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

(INTERNAL)

LOAD

Shunt Battery Charger with Low-Battery Load Disconnect

1541/42 F04

R2

2pF TO 10pF

–

+

OP AMP

AMPOUT

R1

Figure 4. Compensation for Feedback Node Capacitance

8V

5V

OUT

2ms/DIV

LTC1541 • F03b

Figure 3b. Reference and Comparator Output Transient Response

APPLICATIO S I FOR ATIO

TYPICAL APPLICATIO S