WT78L12G datasheet(6/10 Pages) WEITRON

Part #	WT78L12G

Description	Positive Voltage Regulator

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Manufacturer	WEITRON [Weitron Technology]

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6 / 10 page

WEITRON

http://www.weitron.com.tw

WT78LXX

6/10

23-Mar-07

Parameter

Symbol

Min

Typ

Max

Unit

V

Output Voltage

Vin=19V, IO=40mA, Tj=25°C

14.5V ≤ Vin ≤ 27V, 1mA ≤ IO ≤ 40mA

14.5V≤ Vin ≤Vmax, 1mA≤ IO ≤70mA (Note2)

Line Regulation

14.5V ≤ Vin ≤ 27V, IO=40mA, Tj=25°C

16V ≤ Vin ≤ 27V, IO=40mA, Tj=25°C

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

12.0

-

11.64

11.40

12.36

12.60

25

20

-

300

250

mV

Load Regulation

Vin = 19V, 1mA ≤ IO ≤ 100mA, Tj=25°C

Vin = 19V, 1mA ≤ IO ≤ 40mA, Tj=25°C

Quiescent Current

Vin = 19V, IO =0mA, Tj=25°C

25

12

-

150

75

mV

VO

2.0

-

6.0

mA

IQ

Quiescent Current Change

Vin = 19V, 1mA ≤ IO ≤ 40mA

16V ≤ Vin ≤ 27V, IO=40mA

-

0.1

1.5

mA

IQ

Output Noise Voltage

10Hz ≤ f ≤ 100KHz

80

-

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

-1.0

-

mV/°C

VO / Tj

Temperature Coeﬃcient of Output Voltage

IO = 5mA, 0°C ≤ Tj ≤ 125°C

-1.3

-

mV/°C

VO / Tj

Ripple Rejection

15V ≤ Vin ≤ 25V, f=120Hz, Tj=25°C

65

37

-

dB

RR

A-Rank(3%)

B-Rank(5%)

Parameter

Symbol

Min

Typ

Max

Unit

V

Output Voltage

Vin=23V, IO=40mA, Tj=25°C

17.5V ≤ Vin ≤ 30V, 1mA ≤ IO ≤ 40mA

17.5V≤ Vin ≤Vmax, 1mA≤ IO ≤70mA (Note2)

Line Regulation

17.5V ≤ Vin ≤ 30V, IO=40mA, Tj=25°C

20V ≤ Vin ≤ 30V, IO=40mA, Tj=25°C

15.0

-

14.55

14.25

15.45

15.75

25

15

-

150

75

mV

Load Regulation

Vin = 23V, 1mA ≤ IO ≤ 100mA, Tj=25°C

Vin = 23V, 1mA ≤ IO ≤ 70mA, Tj=25°C

Quiescent Current

Vin = 23V, IO =0mA, Tj=25°C

20

25

-

150

mV

VO

2.2

-

6.5

mA

IQ

Quiescent Current Change

Vin = 23V, 1mA ≤ IO ≤ 40mA

20V ≤ Vin ≤ 30V, IO=40mA

-

0.1

1.5

mA

IQ

Output Noise Voltage

10Hz ≤ f ≤ 100KHz

90

-

µV

Vn

Dropout Voltage

IO = 100mA, Tj=25°C

1.7

-

V

VD

Ripple Rejection

18.5V ≤ Vin ≤ 28.5V, f=120Hz, Tj=25°C

63

34

-

dB

RR

A-Rank(3%)

B-Rank(5%)

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

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