Fairchild Semiconductor LM78L12A Datasheet

©2002 Fairchild Semiconductor Corporation

www.fairchildsemi.com

Rev. 1.0.4

Features

• Maximum Output Current of 100mA

• Output Voltage of 5V, 8V, 12V, 15V, 18V and 24V

• Thermal Overload Protection

• Short Circuit Current Limiting

• Output Voltage Offered in ±5% Tolerance

Description

The MC78LXXA/LM78LXXA/MC78L05AA series of
fixed voltage monolithic integrated circuit voltage
regulators are suitable for application that required supply
current up to 100mA.

TO-92

1. Output 2. GND 3. Input

8-SOP

1. Output 2. GND 3. GND 4. NC

5. NC 6. GND 7. GND 8. Input

1

1

SOT-89

1

GND

2

3

23

8

Internal Block Diagram

V

I

3

2

GND

V

0

1

I

R

SC

REFERE NCE VOLTAGE

SHORT CIRCUIT

PROTECTION

THERMAL SHUTDOWN

CIRCUIT

+

-

Inpu

t

Outpu

t

MC78LXXA/LM78LXXA/MC78L05AA

3-Terminal 0.1A Positive Voltage Regulator

MC78LXXA/LM78LXXA/MC78L05AA

2

Absolute Maximum Ratings

Electrical Characteristics(MC78L05A/LM78L05A)

(V

I

= 10V, I

O

= 40mA, 0°C

≤ T

J

≤ 125°C, CI = 0.33µF, CO = 0.1µF, unless otherwise specified. (Note 1)

Note:

1. The max imum stead y sta te usable output cu rrent and inpu t voltage are very depende nt on the heat sink ing an d/or lead length
of the package. Th e data a bove rep resent p ulse tes t conditi ons with junction temper ature as indicated at the initiatio n of test s.

2. Power dissipat ion P

D

≤ 0.75W.

Parameter Symbol Value Unit

Input Voltage (for V

O

= 5V, 8V)

(for V

O

= 12V to 18V)

(for V

O =

24V)

V

I

30
35
40

V
V
V

Operating Junction Temperature Range T

J

0 ~ +150 °C

Storage Temperature Range T

STG

-65 ~ +150 °C

Parameter Symbol Conditions Min. Typ. Max. Unit

Output Voltage V

O

TJ = 25°C4.85.05.2V

Line Regulation (Note1)

∆V

O

TJ = 25°C

7V ≤≤≤≤ V

I

≤≤≤≤ 20V - 8 150 mV

8V ≤≤≤≤ V

I

≤≤≤≤ 20V - 6 100 mV

Load Regulation (Note1)

∆V

O

TJ = 25°C

1mA ≤ I

O

≤ 100mA - 11 60 mV

1mA ≤ I

O

≤ 40mA - 5.0 30 mV

Output Voltage V

O

7V ≤ V

I

≤ 20V 1mA ≤ IO ≤ 40mA - - 5.25 V

7V ≤ V

I

≤ V

MAX

(Note 2)

1mA ≤ I

O

≤ 70mA 4.75 - 5.25 V

Quiescent Current I

Q

TJ = 25°C-2.05.5mA

Quiescent Current
Change

With Line ∆I

Q

8V ≤V

I

≤ 20V - - 1.5 mA

With Load ∆I

Q

1mA ≤ I

O

≤ 40

mA - - 0.1 mA

Output Noise Voltage V

N

TA = 25°C, 10Hz ≤ f ≤ 100kHz - 40 - µV/Vo

Temperature Coefficient of V

O

∆V

O

/∆TIO = 5mA - -0.65 - mV/°C

Ripple Rejection RR f = 120Hz, 8V ≤ V

I

≤ 18V, T

J

= 25°C4180 - dB

Dropout Voltage V

D

TJ = 25°C-1.7-V

MC78LXXA/LM78LXXA/MC78L05AA

3

Electrical Characteristics(MC78L08A)

(Continued)

(V

I

= 14V, I

O

= 40mA, 0°C ≤ TJ ≤ 125°C, CI = 0.33µF, CO = 0.1µF, unless otherwise specified. (Note 1)

Note:

1. The ma ximum ste ady stat e usable output current and input vo ltage ar e very d epende nt on th e heat s inking a nd/or le ad leng th
of the package. The dat a above repres ent pulse test c onditions with junction tempera ture as ind icated at the initi ation of tests.

2. Power dissipat ion P

D

≤ 0.75W.

Parameter Symbol Conditions Min. Typ. Max. Unit

Output Voltage V

O

TJ = 25°C 7.7 8.0 8.3 V

Line Regulation (Note1) ∆V

O

TJ = 25°C

10.5V ≤ V

I

≤ 23V - 10 175 mV

11V ≤ V

I

≤ 23V - 8 125 mV

Load Regulation (Note1) ∆V

O

TJ = 25°C1mA ≤ I

O

≤ 100mA - 15 80 mV

1mA ≤ I

O

≤ 40mA - 8.0 40 mV

Output Voltage V

O

10.5V ≤ V

I

≤ 23V 1mA ≤ IO ≤ 40mA 7.6 - 8.4 V

10.5V ≤ V

I

≤

V

MAX

(Note 2)

1mA ≤ I

O

≤ 70mA 7.6 - 8.4 V

Quiescent Current I

Q

TJ = 25°C-2.05.5mA

Quiescent Current
Change

With Line ∆I

Q

11V ≤ V

I

≤ 23V - - 1.5 mA

With Load ∆I

Q

1mA ≤ I

O

≤ 40mA - - 0.1 mA

Output Noise Voltage V

N

TA = 25°C, 10Hz ≤ f ≤100kHz - 60 - µV/Vo

Temperature Coefficient of V

O

∆V

O

/∆TIO = 5mA - -0.8 - mV/

°C

Ripple Rejection RR f = 120Hz, 11V ≤ V

I

≤ 21V, T

J

= 25°C39 70 - dB

Dropout Voltage V

D

TJ = 25°C-1.7-V

MC78LXXA/LM78LXXA/MC78L05AA

4

Electrical Characteristics(MC78L12A/LM78L12A)

(Continued)

(V

I

= 19V, I

O

= 40mA, 0°C ≤ TJ ≤ 125°C, CI = 0.33 µF, CO = 0.1µF, unless otherwise specified. (Note 1)

Note:

1. The ma ximum ste ady stat e usable output current and input vo ltage ar e very d epende nt on th e heat s inking a nd/or le ad leng th
of the package. The dat a above repres ent pulse test c onditions with junction tempera ture as ind icated at the initi ation of tests.

2. Power dissipat ion P

D

≤ 0.75W.

Parameter Symbol Conditions Min. Typ. Max. Unit

Output Voltage V

O

TJ = 25°C 11.5 12 12.5 V

Line Regulation (Note1) ∆V

O

TJ = 25°C

14.5V ≤ V

I

≤ 27V - 20 250 mV

16V ≤ V

I

≤ 27V - 15 200 mV

Load Regulation (Note1) ∆V

O

TJ = 25°C

1mA ≤ I

O

≤ 100mA - 20 100 mV

1mA ≤ I

O

≤ 40mA - 10 50 mV

Output Voltage V

O

14.5V ≤ V

I

≤ 27V 1mA ≤ IO ≤ 40mA 11.4 - 12.6 V

14.5V ≤ V

I

≤

V

MAX

(Note 2)

1mA ≤ I

O

≤ 70mA 11.4 - 12.6 V

Quiescent Current I

Q

TJ = 25°C-2.16.0mA

Quiescent Current
Change

With Line ∆I

Q

16V ≤ V

I

≤ 27V - - 1.5 mA

With Load ∆I

Q

1mA ≤ I

O

≤ 40mA - - 0.1 mA

Output Noise Voltage V

N

TA = 25°C, 10Hz ≤ f ≤ 100kHz - 80 - µV/Vo

Temperature Coefficient of V

O

∆V

O

/∆TIO = 5mA - -1.0 - mV/°C

Ripple Rejection RR f = 120Hz, 15V ≤ V

I

≤ 25V, T

J

= 25°C37 65 - dB

Dropout Voltage V

D

TJ = 25°C-1.7-V

MC78LXXA/LM78LXXA/MC78L05AA

5

Electrical Characteristics(MC78L15A)

(Continued)

(V

I

= 23V, I

O

= 40mA, 0°C ≤ TJ ≤ 125°C, CI = 0.33 µF, CO = 0.1µF, unless otherwise specified. (Note 1)

Note:

1. The maximum st ea dy state usable output cur re nt a nd input voltage are very dependent on the heat sinking and/or lead le ngth
of the package. Th e data a bove rep resent p ulse tes t conditi ons with junction temper ature as indicated at the initiatio n of test s.

2. Power dissipation P

D

≤ 0.75W.

Parameter Symbol Conditions Min. Typ. Max. Unit

Output Voltage V

O

TJ = 25°C 14.4 15 15.6 V

Line Regulation (Note1) ∆V

O

TJ = 25°C

17.5V ≤ V

I

≤ 30V - 25 300 mV

20V ≤ V

I

≤ 30V - 20 250 mV

Load Regulation (Note1) ∆V

O

TJ = 25°C

1mA ≤ I

O

≤ 100mA - 25 150 mV

1mA ≤ I

O

≤ 40mA - 12 75 mV

Output Voltage V

O

17.5V ≤ V

I

≤ 30V 1mA ≤ IO ≤ 40mA 14.25 - 15.75 V

17.5V ≤ V

I

≤

V

MAX

(Note 2)

1mA ≤ I

O

≤ 70mA 14.25 - 15.75 V

Quiescent Current I

Q

TJ = 25°C-2.16.0mA

Quiescent Current
Change

With Line ∆I

Q

20V ≤ V

I

≤ 30V - - 1.5 mA

With Load ∆I

Q

1mA ≤ I

O

≤ 40mA - - 0.1 mA

Output Noise Voltage V

N

TA = 25°C, 10Hz ≤ f ≤ 100kHz - 90 - µV/Vo

Temperature Coefficient of V

O

∆V

O

/∆TIO = 5mA - -1.3 - mV/°C

Ripple Rejection RR f = 120Hz, 18.5V≤V

I

≤28.5V, T

J

= 25°C34 60 - dB

Dropout Voltage V

D

TJ = 25°C-1.7-V