CYStech Electronics Corp.

Spec. No. : C508M3

Issued Date : 2006.07.12

Revised Date : 2013.08.12

Page No. : 4/8

LM79LXXM3

CYStek Product Specification

Symbol

Parameter

Min

Typ

Max

Conditions

Units

A-rank(3%)

-14.55

-15

-15.45

Vo

B-rank(5%)

Output Voltage

-14.25

-

-15.75

Vin=-23V, Io=40mA,Tj=25

°C

-17.5V

≤Vin≤-30V, 1mA≤Io≤40mA

Vin=-23V,1mA

V

ΔVo

Line Regulation

-

65

300

-17.5V

≤Vin≤-30V, Tj=25°C

mV

ΔVo

Load Regulation

-

25

150

1mA

≤Io≤100mA, Tj=25°C

mV

Quiescent Current

-

-

6.5

Vin=-23V, Io=40mA, Tj=25

°C

mA

-

-

1.5

-20V

≤Vin≤-30V

Quiescent Current

Change

-

-

0.1

1mA

≤Io≤40mA

mA

Vn

Output Noise Voltage

-

90

-

10Hz

≤f≤100KHz

μV

ΔVin / ΔVout

Ripple Rejection

34

39

-

-18.5V

≤Vin≤-28.5V, f=120Hz, Tj=25°C

dB

Dropout Voltage

-

1.7

-

Io=100mA, Tj=25°C

V

Symbol

Parameter

Min

Typ

Max

Conditions

Units

A-rank(3%)

-17.46

-18

-18.54

Vo

B-rank(5%)

Output Voltage

-17.10

-

-18.90

Vin=-27V, Io=40mA,Tj=25

°C

-20.5V

≤Vin≤-33V, 1mA≤Io≤40mA

Vin=-27V,1mA

V

ΔVo

Line Regulation

-

70

300

-20.5V

≤Vin≤-33V, Tj=25°C

mV

ΔVo

Load Regulation

-

27

170

1mA

≤Io≤100mA, Tj=25°C

mV

Quiescent Current

-

-

6.5

Vin=-27V, Io=40mA, Tj=25

°C

mA

-

-

1.5

-21V

≤Vin≤-33V

Quiescent Current

Change

-

-

0.1

1mA

≤Io≤40mA

mA

Vn

Output Noise Voltage

-

150

-

10Hz

≤f≤100KHz

μV

ΔVin / ΔVout

Ripple Rejection

33

48

-

-23V

≤Vin≤-33V, f=120Hz, Tj=25°C

dB

Dropout Voltage

-

1.7

-

Io=100mA, Tj=25°C

V

Symbol

Parameter

Min

Typ

Max

Conditions

Units

A-rank(3%)

-23.28

-24

-24.72

Vo

B-rank(5%)

Output Voltage

-22.80

-25.20

Vin=-33V, Io=40mA,Tj=25

°C

-27V

≤Vin≤-38V, 1mA≤Io≤40mA

Vin=-33V,1mA

V

ΔVo

Line Regulation

-

90

350

-27V

≤Vin≤-38V, Tj=25°C

mV

ΔVo

Load Regulation

-

40

200

1mA

≤Io≤100mA, Tj=25°C

mV

IQ

Quiescent Current

-

-

6.5

Vin=-33V, Io=40mA ,Tj=25

°C

mA

-

-

1.5

-28V

≤Vin≤-38V

ΔIQ

Quiescent Current

Change

-

-

0.1

1mA

≤Io≤40mA

mA

Vn

Output Noise Voltage

-

200

-

10Hz

≤f≤100KHz

μV

ΔVin / ΔVout

Ripple Rejection

31

47

-

-29V

≤Vin≤-35V, f=120Hz, Tj=25°C

dB

VD

Dropout Voltage

-

1.7

-

Io=100mA, Tj=25°C

V

Note : 1. The maximum steady state usable output current is dependent on input voltage, heat sinking, lead length of the package

and copper of PCB. The data above represent pulse test conditions with junction temperatures specified at the initial of

test.

2. Power dissipation<0.5W