LX1554 datasheet(6/18 Pages) MICROSEMI

Part #	LX1554

Description	ULTRA-LOW START-UP CURRENT, CURRENT-MODE PWM

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Manufacturer	MICROSEMI [Microsemi Corporation]

Direct Link	http://www.microsemi.com

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ULTRA-LOW START-UP CURRENT, CURRENT-MODE PWM

LX1552/3/4/5

PRODUCT D A T ABOOK 1996/1997

Rev. 1.0a

1/01

6

P RODUCTIO N D ATA

S HEET

CHARACTERISTIC CU R VES

FIGURE 2. — MAXIMUM DUTY CYCLE vs. TIMING RESISTOR

FIGURE 3. — OSCILLATOR DISCHARGE CURRENT vs.

TEMPERATURE

FIGURE 4. — OSCILLATOR FREQUENCY vs. TEMPERATURE

FIGURE 1. — OSCILLATOR FREQUENCY vs. TIMING RESISTOR

0.1

0

40

(R

T)

Timing Resistor - (k )

100

20

50

80

1

10

100

10

60

70

90

30

V

CC = 15V

T

A = 25°C

100

0.1

1

1000

(R

T)

Timing Resistor - (k )

100

10

1

10

V

CC = 15V

T

A = 25°C

C

T = 3.3nF

C

T = 1nF

C

T = 6.8nF

C

T = 22nF

C

T = 47nF

C

T = 0.1µF

7.70

8.10

(T

A)

Ambient Temperature - (°C)

7.90

8.20

7.80

8.30

8.40

8.00

-75

-50

-25

0

25

50

75

100

125

8.50

V

CC = 15V

V

PIN4 = 2V

45

49

(T

A)

Ambient Temperature - (°C)

47

50

46

51

52

48

-75

-50

-25

0

25

50

75

100

125

53

V

CC = 15V

R

T = 10k

C

T = 3.3nF

54

55

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