LND3842/43/44/45

50

60

70

80

90

100

0

25

50

75

100

T ( C)

A

o

I

(mA)

SC

Figure 6. Reference Short Circuit Current vs. Temperature

0.2

0.4

0.6

0.8

1.0

1

2345

67

Figure 5. Current Sense Input Threshold vs. Output

V (V)

O

T = 25 C

T = 125 C

A

A

o

o

V

(V)

TH

OSCILLATOR

PWM

5V REG

OUTPUT

6

7

8

4

5

I

D

GND

C

/ C

R

R

T

TT

T

REF

V

CLOCK

LARGE R / SMALL C

OUTPUT

/ C

R

TT

/ C

R

TT

OUTPUT

T

T

SMALL R / Large C

T

T

Figure 7. Oscillator and Output Waveforms

• Linear Dimensions, Inc. • 445 East Ohio Street, Chicago IL 60611 USA • tel 312.321.1810 • fax 312.321.1830 • www.lineardimensions.com •