Datasheet LM79124Z, LM79118Z, LM79112Z, LM79105Z, LM79115Z Datasheet (Bay Linear)

Bay Linear, Inc

2478 Armstrong Street, Livermore, CA 94550 Tel: [phone], Fax: [phone] www.baylinear.com

100mA Negative Voltage Regulator

LM79LXX

Packaging Information

Ordering Information

Device Operating

Voltage

Temp. Package

LM79l05 7 to 20

0 to 125 °C

TO-92

LM79L12 14.5 to 27

0 to 125 °C

TO-92

LM79L15 17.5 to 30

0 to 125 °C

TO-92

LM79L18 20.5 to 33

0 to 125 °C

TO-92

LM79L24 27 to 38

0 to 125 °C

TO-92

Description

The Bay Linear LM79LXX is integrated linear negative
regulator with three terminals. The LM79LXX offer several
fixed output voltages making them useful in wide range of
applications. These appl ications include on-card regu lation for
elimination of noise and distribution problems associated with
single-point regulation. In addition they can be used with
power pass elements to make high-current voltage regulators.
Each of these regulators can deliver up to 100mA of output
current.

When used in replacement for a Zener diode-resistor
combination, an effective improvement in output impedance
can be obtained together with lower-bias current.

The LM79LXX is available in the plastic TO-92 (Z) package.

Features

• Output Current of 100mA

• Output Voltage Tolerance of 5%

• Internal thermal overload protection

• Internal Short-Circuit Limited

• No External Component

• Output Voltage- 5.0V, -12V, -15V, -18V, -

24V

• Offer in plastic TO-92

• Direct Replacement for MC79L00

Applications

• Post regulator for switching DC/DC

converter

• Bias supply for analog circuits

Bay Linear

Bay LinearBay Linear

Bay Linear

Linear Excellenc e

Bottom View

TO - 92 (N)

1

3 2

1.

Common

2.

Input

3.

Output

Bottom View

TO - 92 (N)

1

3 2

1.

2.

Input

3.

Bay Linear, Inc

2478 Armstrong Street, Livermore, CA 94550 Tel: [phone], Fax: [phone] www.baylinear.com

LM79LXX

Absolute Maximum Rating

Parameter LM79L05 LM78L12…LM78L18 LM78L24 Unit

Input Voltage -30 -35 -40 V
Operating Free-Air, Case, Virtual

Junction Temp.

0 to 150 0 to 150 0 to 150

Storage Temperature Range -65 to 150 -65 to 150 -65 to 150
Lead temperature 1.6 mm from case
for sec.

260 260 260

°

C

Electrical Characteristics (LM79L05)

(VI=10V, IO=40mA, 0°C ≤T

J

≤

125 °C, C

I

= 0.33µF, CO = 0.1µF, unless otherwise specified. (Note 1)

Parameter Symbol Conditions MIN TYP MAX UNIT

Output Voltage V

O

TJ = 25

°

C

-4.8 -5.0 -5.2 V

VI = -7V to -20V TJ = 25

°

C

15 150

Line Regulation

∆

V

O

VI = -7V to -20V TJ = 25

°

C

100

mV

IO = 1mA to 100mA, 25

°

C

20 60

Load Regulation

∆

V

O

IO = 1mA to 40mA, 25

°

C

10 30

mV

Ripple Rejection RR VI = -8V to -18V, f=120Hz 41 49 dB
Output Noise Voltage V

N

F= 10Hz to 100Hz TJ = 25

°

C

46

µ

V

Dropout Voltage V

D

TJ = 25

°

C

1.7 V

Quiescent Current

T

J

= 25

°

C

6mA mA

VI = -8V to -20V, TJ = 25

°

C

1.5

Quiescent Current
Change

∆

I

Q

IO = 1mA to 40mA, TJ = 25

°

C

0.1

mA

Electrical Characteristics (LM79L12)

(VI=10V, IO=40mA, 0°C ≤T

J

≤

125 °C, C

I

= 0.33µF, CO = 0.1µF, unless otherwise specified. (Note 1)

Parameter Symbol Conditions MIN TYP MAX UNIT

Output Voltage V

O

TJ = 25

°

C

-11.50 -12 -12.5 V

VI =-14.5V to -27V TJ = 25

°

C

50 250

Line Regulation

∆

V

O

VI =- 14.5V to -27V TJ = 25

°

C

40 200

mV

IO = 1mA to 100mA, 25

°

C

24 100

Load Regulation

∆

V

O

I

O

= 1mA to 40mA, 25

°

C

15 50

mV

Ripple Rejection RR VI = -16V to -27V, f=120Hz 37 42 dB
Output Noise Voltage V

N

F= 10Hz to 100Hz TJ = 25

°

C

80

µ

V

Dropout Voltage V

D

TJ = 25

°

C

1.7 V

Quiescent Current

T

J

= 25

°

C

6.5mA mA

VI = -16V to -27V, TJ = 25

°

C

1.5

Quiescent Current
Change

∆

I

Q

IO = 1mA to 40mA, TJ = 25

°

C

0.1

mA

Bay Linear, Inc

2478 Armstrong Street, Livermore, CA 94550 Tel: [phone], Fax: [phone] www.baylinear.com

LM79LXX

Electrical Characteristics (LM79L15)

(VI=10V, IO=40mA, 0°C ≤T

J

≤

125 °C, C

I

= 0.33µF, CO = 0.1µF, unless otherwise specified. (Note 1)

Parameter Symbol Conditions MIN TYP MAX UNIT

Output Voltage V

O

TJ = 25

°

C

-14.40 -15 -15.60 V

VI = -17.5V to -30V TJ = 25

°

C

65 250

Line Regulation

∆

V

O

VI = -17.5V to -30V TJ = 25

°

C

50 300

mV

IO = 1mA to 100mA, 25

°

C

25 150

Load Regulation

∆

V

O

I

O

= 1mA to 40mA, 25

°

C

15 75

mV

Ripple Rejection RR VI = -18.5V to -28.5V, f=120Hz 34 39 dB
Output Noise Voltage V

N

F= 10Hz to 100Hz TJ = 25

°

C

90

µ

V

Dropout Voltage V

D

TJ = 25

°

C

1.7 V

Quiescent Current

T

J

= 25

°

C

6.5 mA

VI = -20V to -30V, TJ = 25

°

C

1.5

Quiescent Current
Change

∆

I

Q

IO = 1mA to 40mA, TJ = 25

°

C

0.1

mA

Electrical Characteristics (LM79L18)

(VI=10V, IO=40mA, 0°C ≤T

J

≤

125 °C, C

I

= 0.33µF, CO = 0.1µF, unless otherwise specified. (Note 1)

Parameter Symbol Conditions MIN TYP MAX UNIT

Output Voltage V

O

TJ = 25

°

C

-17.30 -18 -18.7 V

VI = -20.5V to -33V TJ = 25

°

C

70 325

Line Regulation

∆

V

O

VI = -20.5V to -33V TJ = 25

°

C

60 375

mV

IO = 1mA to 100mA, 25

°

C

27 170

Load Regulation

∆

V

O

I

O

= 1mA to 40mA, 25

°

C

19 85

mV

Ripple Rejection RR VI = -23V to -33V, f=120Hz 33 48 dB
Output Noise Voltage V

N

F= 10Hz to 100Hz TJ = 25

°

C

150

µ

V

Dropout Voltage V

D

TJ = 25

°

C

1.7 V

Quiescent Current

T

J

= 25

°

C

4.7 6.5mA mA

VI = -21V to -33V, TJ = 25

°

C

1.5

Quiescent Current
Change

∆

I

Q

IO = 1mA to 40mA, TJ = 25

°

C

0.1

mA

Bay Linear, Inc

2478 Armstrong Street, Livermore, CA 94550 Tel: [phone], Fax: [phone] www.baylinear.com

LM79LXX

Electrical Characteristics (LM79L24)

(VI=10V, IO=40mA, 0°C ≤T

J

≤

125 °C, C

I

= 0.33µF, CO = 0.1µF, unless otherwise specified. (Note 1)

Parameter Symbol Conditions MIN TYP MAX UNIT

Output Voltage V

O

TJ = 25

°

C

-23 -24 -25 V

VI = -27V to -38V TJ = 25

°

C

90 350

Line Regulation

∆

V

O

VI = -27V to -38V TJ = 25

°

C

75 300

mV

IO = 1mA to 100mA, 25

°

C

40 200

Load Regulation

∆

V

O

I

O

= 1mA to 40mA, 25

°

C

25 100

mV

Ripple Rejection RR VI =- 29V to -35V, f=120Hz 30 33 dB
Output Noise Voltage V

N

F= 10Hz to 100Hz TJ = 25

°

C

200

µ

V

Dropout Voltage V

D

TJ = 25

°

C

1.7 V

Quiescent Current

T

J

= 25

°

C

4 6.5 mA

VI = -28V to -38V, TJ = 25

°

C

1.5

Quiescent Current
Change

∆

I

Q

IO = 1mA to 40mA, TJ = 25

°

C

0.1

mA

Advance Information

-

These data sheets contain descriptions of products that are in development. The specifications are based on the engineering calculations,

computer simulations and/ or initial prototype evaluation.

Preliminary Information

-

These data sheets contain minimum and maximum specifications that are based on the initial device characterizations. These limits are

subject to change upon the completion of the full characterization over the specified temperature and supply voltage ranges.

The application circuit exam ples are only to expla in the represen tative applications of the devices and are not intended to guarantee any circuit
design or permit an y in dustrial property right to other rights to execute. Bay Linear takes no responsibility for any problems related to any
industrial property right resultin g from the use of the contents shown in the data book. Typical parameters can and do va ry in different
applications. Customer’s technical experts must validate all operating parameters including “ Typical” for each customer application.

LIFE SUPPORT AND NUCLEAR POLICY

Bay Linear products are not authorized for and should not be used within life support systems which are intended for surgical
implants into the body to support or sustain life, in aircraft, space equipment, submarine, or nuclear facility application s without
the specific written consent of Bay Linear President.