Datasheet MC79M06 Datasheet (Fairchild Semiconductor)

©2001 Fairchild Semiconductor Corporation

www.fairchildsemi.com

Rev. 1.0.0

Features

• No external components required

• Output current in excess of 0.5A

• Internal thermal overload

• Internal short circuit current limiting

• Output transistor safe area compensation

• Output voltages of -5V,-6V,-8V,-12V,-15V,-18Vand -24V

Description

The MC79MXX series of 3-Terminal medium current
negative voltage regulators are monolithic integrated circuits
designed as fixed voltage regulators. These regulators
employ internal current limiting, thermal shutdown and safe
area compensation making them essentially indestructible.

TO-220

1. GND 2. Input 3. Output

1

Schematic Diagram

MC79MXX

3-Terminal 0.5A Negative Voltage Regulator

MC79MXX

2

Absolute Maximum Ratings

Electrical Characteristics (MC79M05)

(Refer to test circuit, 0

°C ≤TJ ≤ +125

°C, l

O

=350mA, VI = -10V,unless otherwise specified, CI =0.33µF,CO=0.1µF)

Note:

1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be take n
into account separately. Pulse testing with low duty is used.

Parameter Symbol Value Unit

Input Voltage(for V

O

= -5V to -18V)

(for V

O

= -24V)

V

I

V

I

-35

-40

V
V

Thermal Resistance Junction-Cases R

θJC

5 °C /W

Thermal Resistance Junction-Air R

θJA

65 °C /W

Operating Temperature Range T

OPR

0 ~ +125 °C

Storage Temperature Range T

STG

-65 ~ +125 °C

Parameter Symbol Conditions Min. Typ. Max. Unit

Output Voltage V

O

TJ= +25 °C -4.8 -5 -5.2

V

I

O

= 5mA to 350mA

V

I

= -7V to -25V

-4.75 -5 -5.25

Line Regulation (Note1) ∆V

O

TJ =+25°C

V

I

= -7V to -25V - 7.0 50

mV

V

I

= -8V to -25V - 2.0 30

Load Regulation (Note1) ∆V

O

IO = 5mA to 500mA
T

J

= +25 °C

- 30 100 mV

Quiescent Current I

Q

TJ= +25 °C-3.06.0mA

Quiescent Current Change ∆I

Q

IO = 5mA to 350mA - - 0.4

mA

I

O

= 200mA

V

I

= -8V to -25V

--0.4

Output Voltage Drift ∆Vo/∆TI

O

= 5mA - -0.2 - mV/ °C

Output Noise Voltage V

N

f = 10Hz, 100KHz
T

A

= +25 °C

-40-µV

Ripple Rejection RR

f = 120Hz
V

J

= -8 to -18V

54 60 - dB

Dropout Voltage V

D

TJ =+25 °C, IO = 500mA - 1.1 - V

Short Circuit Current I

SC

TJ= +25 °C, VI = -35V - 140 - mA

Peak Current I

PK

TJ= +25 °C - 650 - mA

MC79MXX

3

Electrical Characteristics (MC79M06)

(Refer to test circuit, 0

°C ≤TJ ≤ +125 °C, l

O

=350mA, VI = -11V,unless otherwise specified)

Note:

1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be take n
into account separately. Pulse testing with low duty is used.

Parameter Symbol Conditions Min. Typ. Max. Unit

Output Voltage V

O

TJ= +25 °C - 5.75 - 6.0 - 6.25

V

I

O

= 5mA to 350mA

V

I

= -8.0V to -25V - 5.7 - 6.0 - 6.3

Line Regulation (Note1) ∆V

O

TJ =+25°C

V

I

= -8V to -25V - 7.0 60

mV

V

I

= -9V to -19V - 2.0 40

Load Regulation (Note1) ∆V

O

TJ= +25 °CIO = 5.0mA to 500mA - 30 120 mV

Quiescent Current I

Q

TJ= +25 °C-36mA

Quiescent Current Change ∆I

Q

IO = 5mA to 350mA - - 0.4

mA

V

I

= -8V to -25V - - 0.4

Output Voltage Drift ∆V

O

/∆TIO = 5mA - 0.4 - mV/ °C

Output Noise Voltage V

N

f = 10Hz to 100KHz,TA = +25 °C-50-µV

Ripple Rejection RR f = 120Hz,V

I

= -9V to -19V 54 60 - dB

Dropout Voltage V

D

IO = 500mA, TJ = +25 °C-1.1-V

Short Circuit Current I

SC

VI = -35V, TJ = +25 °C - 140 - mA

Peak Current I

PK

TJ= +25 °C - 650 - mA

MC79MXX

4

Electrical Characteristics (MC79M08)

(Refer to test circuit, 0

°C ≤TJ ≤ +125 °C, l

O

=350mA, VI = -14V,unless otherwise specified)

Note:

1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be take n
into account separately. Pulse testing with low duty is used.

Parameter Symbol Conditions Min. Typ. Max. Unit

Output Voltage V

O

TJ= +25 °C - 7.7 - 8.0 - 8.3

V

I

O

= 5mA to 350mA

V

I

= -10.5V to -25V - 7.6 - 8.0 - 8.4

Line Regulation (Note1) ∆V

O

TJ =+25°C

V

I

= -10.5V to -25V - 7.0 80

mV

V

I

= -11V to -21V - 2.0 50

Load Regulation (Note1) ∆V

O

TJ= +25 °CIO = 5.0mA to 500mA - 30 160 mV

Quiescent Current I

Q

TJ= +25 °C-36mA

Quiescent Current Change ∆I

Q

IO = 5mA to 350mA - - 0.4

mA

V

I

= -8V to -25V - - 0.4

Output Voltage Drift ∆V

O

/∆TIO = 5mA - -0.6 - mV/ °C

Output Noise Voltage V

N

f = 10Hz to 100KHz,TA = +25 °C-60-µV

Ripple Rejection RR f = 120Hz,V

I

= -9V to -19V 54 59 - dB

Dropout Voltage V

D

IO = 500mA, TJ = +25 °C-1.1-V

Short Circuit Current I

SC

VI = -35V, TJ = +25 °C - 140 - mA

Peak Current I

PK

TJ = +25 °C - 650 - mA

MC79MXX

5

Electrical Characteristics (MC79M12)

(Refer to test circuit, 0

°C ≤TJ ≤ +125 °C, l

O

=350mA, VI = -19V,unless otherwise specified)

Note:

1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be take n
into account separately. Pulse testing with low duty is used.

Parameter Symbol Conditions Min. Typ. Max. Unit

Output Voltage V

O

TJ= +25 °C -11.5 -12 -12.5

V

I

O

= 5mA to 350mA

V

I

= -14.5V to -30V -11.4 -12 -12.6

Line Regulation (Note1) ∆V

O

TJ =+25°C

V

I

= -14.5V to -30V - 8.0 80

mV

V

I

= -15V to -25V - 3.0 50

Load Regulation (Note1) ∆V

O

TJ= +25 °CIO = 5.0mA to 500mA - 30 240 mV

Quiescent Current I

Q

TJ= +25 °C-36mA

Quiescent Current Change ∆I

Q

IO = 5mA to 350mA - - 0.4

mA

V

I

= -14.5V to -30V - - 0.4

Output Voltage Drift ∆V

O

/∆TIO = 5mA - -0.8 - mV/ °C

Output Noise Voltage V

N

f = 10Hz to 100KHz,TA =+25 °C-75-µV

Ripple Rejection RR f = 120Hz,V

I

= -15V to -25V 54 60 - dB

Dropout Voltage V

D

IO = 500mA, TJ = +25 °C-1.1-V

Short Circuit Current I

SC

VI = -35V, TJ = +25 °C - 140 - mA

Peak Current I

PK

TJ= +25 °C - 650 - mA

MC79MXX

6

Electrical Characteristics (MC79M15)

(Refer to test circuit, 0

°C ≤TJ ≤ +125 °C, l

O

=350mA, VI = -23V,unless otherwise specified)

Note:

1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be take n
into account separately. Pulse testing with low duty is used.

Parameter Symbol Conditions Min. Typ. Max. Unit

Output Voltage V

O

TJ= +25 °C - 14.4 - 15 - 15.6

V

I

O

= 5mA to 350mA

V

I

= -17.5V to -30V

-14.25 - 15 -15.75

Line Regulation (Note1) ∆V

O

TJ =+25°C

V

I

= -17.5V to -30V - 9.0 80

mV

V

I

= -18V to -28V - 5.0 50

Load Regulation (Note1) ∆V

O

TJ= +25 °CIO = 5.0mA to 500mA - 30 240 mV

Quiescent Current I

Q

TJ= +25 °C-36mA

Quiescent Current Change ∆I

Q

IO = 5mA to 350mA - - 0.4

mA

V

I

= -17.5V to -28V - - 0.4

Output Voltage Drift ∆V

O

/∆TIO = 5mA - -1.0 - mV/ °C

Output Noise Voltage V

N

f = 10Hz to 100KHz,TA = +25 °C-90-µV

Ripple Rejection RR f = 120Hz,V

I

= -18.5V to -28.5V 54 59 - dB

Dropout Voltage V

D

IO = 500mA, TJ = +25 °C-1.1-V

Short Circuit Current I

SC

VI = -35V, TJ = +25 °C - 140 - mA

Peak Current I

PK

TJ= +25 °C - 650 - mA

MC79MXX

7

Electrical Characteristics (MC79M18)

(Refer to test circuit, 0

°C ≤TJ ≤ +125 °C, l

O

=350mA, VI = -27V,unless otherwise specified)

Note;

1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be take n
into account separately. Pulse testing with low duty is used.

Parameter Symbol Conditions Min. Typ. Max. Unit

Output Voltage V

O

TJ= +25 °C - 17.3 - 18 - 18.7

V

I

O

= 5mA to 350mA

V

I

= -21V to -33V

- 17.1 - 18 - 18.9

Line Regulation (Note1) ∆V

O

TJ =+25°C

V

I

= -21V to -33V - 9.0 80

mV

V

I

= -24V to -30V - 5.0 80

Load Regulation (Note1) ∆V

O

TJ= +25 °CIO = 5.0mA to 500mA - 30 360 mV

Quiescent Current I

Q

TJ= +25 °C-36mA

Quiescent Current Change ∆I

Q

IO = 5mA to 350mA - - 0.4

mA

V

I

= -21V to -33V - - 0.4

Output Voltage Drift ∆V

O

/∆TIO = 5mA - -1.0 - mV/ °C

Output Noise Voltage V

N

f = 10Hz to 100KHz,TA = +25 °C-110-µV

Ripple Rejection RR f = 120Hz,V

I

= -22V to -32V 54 59 - dB

Dropout Voltage V

D

IO = 500mA, TJ = +25 °C-1.1-V

Short Circuit Current I

SC

VI = -35V, TJ = +25 °C - 140 - mA

Peak Current I

PK

TJ= +25 °C - 650 - mA

MC79MXX

8

Electrical Characteristics (MC79M24)

(Refer to test circuit, 0

°C ≤TJ ≤ +125 °C, l

O

=350mA, VI = -33V,unless otherwise specified)

Note:

1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be take n
into account separately. Pulse testing with low duty is used.

Parameter Symbol Conditions Min. Typ. Max. Unit

Output Voltage V

O

TJ= +25 °C - 23 - 24 - 25

V

I

O

= 5mA to 350mA

V

I

= -27V to -38V

- 22.8 - 24 - 25.2

Line Regulation (Note1) ∆V

O

TJ =+25°C

V

I

= -27V to -38V - 9.0 80

mV

V

I

= -30V to -36V - 5.0 70

Load Regulation (Note1) ∆V

O

TJ= +25 °CIO = 5.0mA to 500mA - 30 300 mV

Quiescent Current I

Q

TJ= +25 °C-36mA

Quiescent Current Change ∆I

Q

IO = 5mA to 350mA - - 0.4

mA

V

I

= -27V to -38V - - 0.4

Output Voltage Drift ∆V

O

/∆TIO = 5mA - -1.0 - mV/ °C

Output Noise Voltage V

N

f = 10Hz to 100KHz,TA = +25 °C - 180 - µV

Ripple Rejection RR f = 120Hz,V

I

= -28V to -38V 54 58 - dB

Dropout Voltage V

D

IO = 500mA, TJ = +25 °C-1.1-V

Short Circuit Current I

SC

VI = -35V, TJ = +25 °C - 140 - mA

Peak Current I

PK

TJ= +25 °C - 650 - mA

MC79MXX

9

Typical Applications

Figure 1. Fixed Output Regulator

Figure 2. Variable Output

Notes:

1. Required for stability. For value given, capacitor must be solid tantalum. 25µF aluminum electrolytic may be substituted.

2. C

2

improves tr ansient response and ripple r ejection. Do not increase beyond 50µF.

MC79MXX

MC79MXX

MC79MXX

10

Mechanical Dimensions

Package

Dimensions in millimeters

4.50

±0.20

9.90

±0.20

1.52

±0.10

0.80

±0.10

2.40

±0.20

10.00

±0.20

1.27

±0.10

ø3.60

±0.10

(8.70)

2.80

±0.10

15.90

±0.20

10.08

±0.30

18.95MAX.

(1.70)

(3.70)(3.00)

(1.46)

(1.00)

(45°)

9.20

±0.20

13.08

±0.20

1.30

±0.10

1.30

+0.10
–0.05

0.50

+0.10
–0.05

2.54TYP

[2.54

±0.20

]

2.54TYP

[2.54

±0.20

]

TO-220

MC79MXX

11

Mechanical Dimensions

(Continued)

Package

Dimensions in millimeters

6.60

±0.20

2.30

±0.10

0.50

±0.10

5.34

±0.30

0.70

±0.20

0.60

±0.20

0.80

±0.20

9.50

±0.30

6.10

±0.20

2.70

±0.20

9.50

±0.30

6.10

±0.20

2.70

±0.20

MIN0.55

0.76

±0.10

0.50

±0.10

1.02

±0.20

2.30

±0.20

6.60

±0.20

0.76

±0.10

(5.34)

(1.50)

(2XR0.25)

(5.04)

0.89

±0.10

(0.10) (3.05)

(1.00)

(0.90)

(0.70)

0.91

±0.10

2.30TYP

[2.30±0.20]

2.30TYP

[2.30±0.20]

MAX0.96

(4.34)(0.50) (0.50)

D-PAK

MC79MXX

12

Ordering Information

Product Number Package Operating Temperature

MC79M05CT

TO-220 0 ~ + 125°C

MC79M06CT
MC79M08CT
MC79M12CT
MC79M15CT
MC79M18CT
MC79M24CT

MC79MXX

13

MC79MXX

6/11/01 0.0m 001

Stock#DSxxxxxxxx

 2001 Fairchild Semiconductor Corporation

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