WT78LXXK datasheet(4/7 Pages) WEITRON

No de pièce	WT78LXXK

Description	Positive Voltage Regulator

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Fabricant	WEITRON [Weitron Technology]

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WEITRON

http://www.weitron.com.tw

4/7

05-Nov-2010

WT78L12 (Refer to the test circuits, Tj=0~125°C, IO=40mA, Vin=19V, Cin=0.33µF, CO=0.1µF unless otherwise speciﬁed)

Parameter

Symbol

Min

Typ

Max

Unit

V

Output Voltage

Tj=25°C

Line Regulation

O=1~100mA, Tj=25°C

O=1~40mA, Tj=25°C

WT78L15 (Refer to the test circuits, Tj=0~125°C, IO=40mA, Vin=23V, Cin=0.33µF, CO=0.1µF unless otherwise speciﬁed)

15

14.4

14.25

15.6

15.75

25

15

-

150

75

mV

Load Regulation

j=25°C

Quiescent Current

j=25°C

65

58

-

300

250

mV

VO

4.6

-

6.5

mA

IQ

Quiescent Current Change

-

1.5

0.1

mA

Q

Output Noise Voltage

82

-

µV

Vn

Dropout Voltage

1.7

-

V

VD

Ripple Rejection

j=0-125°C

39

-

dB

RR

17.5V<=V <=30V,

in

IO=1mA~40mA,Tj=0-125°C

IO =1mA~70mA, Tj=0~125°C

14.25

15

15.75

I

∆VO

17.5V<=V <=30V,

in

19V<=V <=30V,

in

∆VO

T

∆I

19V<=V <=30V,

in

Tj=0-125°C

1mA<=I O<=40mA,Tj =0-125°C

10Hz<=f<=100KHz, T =25°C

18.5V<=V <=28.5V,

in

T =25°C

j=25°C

Parameter

Symbol

Min

Typ

Max

Unit

V

Output Voltage

Tj=25°C

Line Regulation

O=1~100mA, Tj=25°C

O=1~40mA, Tj=25°C

12

11.5

11.4

12.5

12.6

22

13

-

100

50

mV

Load Regulation

j =25°C

Quiescent Current

j=25°C

55

49

-

250

200

mV

VO

4.3

-

6.5

mA

IQ

Quiescent Current Change

-

1.5

0.1

mA

Q

Output Noise Voltage

70

-

µV

Vn

Dropout Voltage

1.7

-

V

VD

Ripple Rejection

j=0-125°C

42

-

dB

RR

14V<=V <=27V,

in

IO=1mA~40mA,Tj=0-125°C

IO =1mA~70mA, Tj=0~125°C

11.4

12

12.6

I

∆VO

14.5V<=V <=27V,

in

16V<=V <=27V,

in

∆VO

T

∆I

16V<=V <=27V,

in

Tj=0-125°C

1mA<=I O<=40mA,Tj =0-125°C

10Hz<=f<=100KHz, T =25°C

15V<=V <=25V,

in

T =25°C

j=25°C

37

V =23V,

in

V =23V,

in

V =23V,

in

O=40mA,

I

O=40mA,

I

O=40mA,

I

34

WT78LXXK

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