DHC2805SH datasheet(7/9 Pages) MSK

7 / 9 page

TYPICAL PERFORMANCE CURVES

Rev. G 8/06

LINE TRANSIENT RESPONSE

0.0

2.0

OUTPUT CURRENT, IOUT (A)

LOW LINE DROP OUT

0.5

1.0

1.5

10K

90K

60K

20K

30K 40K

TIME, t (500

µsec/DIV)

LOAD TRANSIENT RESPONSE 1000

µF

LINE TRANSIENT RESPONSE

EFFICIENCY CONTOURS

OUTPUT CURRENT, IOUT (A)

1.44

.18 .36

.72

1.08

1.8

1.44

.18 .36

.72

1.08

1.8

1.44

.18 .36

.72

1.08

1.8

SET POINT RESISTOR, RSP (Ω)

TIME, t (5msec/DIV)

TURN ON THRESHOLD

TURN ON RESPONSE

100 200 400

FREQUENCY, f (Hz)

–100

AUDIO REJECTION

–20

–40

1K 2K 4K 10K 20K 40K 100K

–60

–80

3.3V

28V

VOUT

VIN

TEMP = 25

°C

30%

40%

50%

55%

60%

63%

65%

67%

68%

69%

70%

EFFICIENCY CONTOURS

OUTPUT CURRENT, IOUT (A)

TEMP =

125

°C

30%

40%

50%

55%

60%

62%

64%

65%

66%

67%

EFFICIENCY CONTOURS

OUTPUT CURRENT, IOUT (A)

TEMP = –55

°C

30%

40%

50%

55%

67%

68%

60%

65%

66%

63%

INCLUDES 1000

µF ON OUTPUT BUS

TIME, t (200

µsec/DIV)

TIME, t (200

µsec/DIV)

TIME, t (200

µsec/DIV)

LOAD TRANSIENT RESPONSE 100

µF

INCLUDES 100

µF ON OUTPUT BUS

TIME, t (100

µsec/DIV)

LOAD TRANSIENT RESPONSE

1.8A

.9A

VOUT

VIN

11V

16V

.9A

80V

40V

1.8A

LOAD 1.8A

VOUT

IOUT

NO OUTPUT BUS CAPCITANCE

VIN = 28V

IOUT = 2.0A

INCLUDES 100

µF ON

OUTPUT BUS

DHC2803S

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