WT78LXX datasheet(4/10 Pages) WEITRON

No de pièce	WT78LXX

Description	Positive Voltage Regulator

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Fabricant	WEITRON [Weitron Technology]

Site Internet	http://www.weitron.com.tw

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4 / 10 page

WEITRON

http://www.weitron.com.tw

WT78LXX

4/10

23-Mar-07

Parameter

Symbol

Min

Typ

Max

Unit

V

Output Voltage

Vin=12V, IO=40mA, Tj=25°C

8.5V ≤ Vin ≤ 20V, 1mA ≤ IO ≤ 40mA

8.5V ≤ Vin ≤ Vmax, 1mA ≤ IO ≤ 70mA (Note2)

Line Regulation

8.5V ≤ Vin ≤ 20V, IO=40mA, Tj=25°C

9V ≤ Vin ≤ 20V, IO=40mA, Tj=25°C

WT78L06 (Refer to the test circuits, Tj=0~125°C, IO=40mA, Vin=12V, Cin=0.33µF, CO=0.1µF unless otherwise speciﬁed)

6.0

-

5.82

5.70

6.18

6.30

64

54

-

175

125

mV

Load Regulation

Vin = 12V, 1mA ≤ IO ≤ 100mA, Tj=25°C

Vin = 12V, 1mA ≤ IO ≤ 70mA, Tj=25°C

Quiescent Current

Vin = 12V, IO =0mA, Tj=25°C

12.8

5.8

-

80

40

mV

VO

3.9

-

6.0

mA

IQ

Quiescent Current Change

Vin = 12V, 1mA ≤ IO ≤ 40mA

9V ≤ Vin ≤ 20V, IO=40mA

-

0.1

1.5

mA

IQ

Output Noise Voltage

10Hz ≤ f ≤ 100KHz

49

-

µV

Vn

Dropout Voltage

IO = 100mA, Tj=25°C

1.7

-

V

VD

Temperature Coeﬃcient of Output Voltage

IO = 5mA, 0°C ≤ Tj ≤ 125°C

0.75

-

mV/°C

VO / Tj

Ripple Rejection

10V ≤ Vin ≤ 20V, f=120Hz, Tj=25°C

46

40

-

dB

RR

A-Rank(3%)

B-Rank(5%)

Parameter

Symbol

Min

Typ

Max

Unit

V

Output Voltage

Vin=14V, IO=40mA, Tj=25°C

10.5V ≤ Vin ≤ 23V, 1mA ≤ IO ≤ 40mA

10.5V≤ Vin ≤ Vmax, 1mA≤ IO ≤70mA (Note2)

Line Regulation

10.5V ≤ Vin ≤ 23V, IO=40mA, Tj=25°C

11V ≤ Vin ≤ 23V, IO=40mA, Tj=25°C

WT78L08 (Refer to the test circuits, Tj=0~125°C, IO=40mA, Vin=14V, Cin=0.33µF, CO=0.1µF unless otherwise speciﬁed)

8.0

-

7.76

7.60

8.24

8.40

10

8

-

175

125

mV

Load Regulation

Vin = 14V, 1mA ≤ IO ≤ 100mA, Tj=25°C

Vin = 14V, 1mA ≤ IO ≤ 70mA, Tj=25°C

Quiescent Current

Vin = 14V, IO = 0mA, Tj=25°C

15

8

-

80

40

mV

VO

2.0

-

5.5

mA

IQ

Quiescent Current Change

Vin = 14V, 1mA ≤ IO ≤ 40mA

11V ≤ Vin ≤ 23V, IO = 40mA

-

0.1

1.5

mA

IQ

Output Noise Voltage

10Hz ≤ f ≤ 100KHz

49

-

µV

Vn

Dropout Voltage

IO = 100mA, Tj=25°C

1.7

-

V

VD

Temperature Coeﬃcient of Output Voltage

IO = 5mA, 0°C ≤ Tj ≤ 125°C

0.75

-

mV/°C

VO / Tj

Ripple Rejection

11V ≤ Vin ≤ 21V, f=120Hz, Tj=25°C

45

39

-

dB

RR

A-Rank(3%)

B-Rank(5%)

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