STMicroelectronics L79L00 User Manual

L79L00

SERIES

NEG A TIVE VO L T AGE REG U L A TORS

■ OUTPUT CURRENT UP TO 100 mA

■ OUTPUT VOLTAGES OF -5; -6; -8; -9; -12;

-15 V

■ THERMAL OVERLOAD PROTECTION

■ SHORT CIRCUIT PROTECTION

■ NO EXTERNAL COMPONENTS ARE

REQUIRED

■ A VAI L ABL E IN EITHER ± 5% (AC) OR ± 10%

(C) SELECTION

DESCRIPTION

The L79L00 series of three-terminal negative
regulators employ internal current limiting and
thermal shutdown, making them essentially
indestructible. If adequate heat-sink is provided,
they can deliver up to 100 mA output current.
They are intended as fixed v oltage regul ato rs in a
wide range of applications including local or
on-card regulation 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.
The L79L00 series used as Zener diod e/resistor
combination replacement, offers an effective

SO-8 SOT-89

TO-92

output impedance improvement of typically two
orders of magnitude, along with lower quiescent
current and lower noise.

Figure 1: Sch ematic Diagram

Rev. 10

1/17March 2005

L79L00 SERIES

Table 1: Absolute Maximum Ratings

Symbol Parameter Value Unit

V

I
P
T
T

DC Input Voltage VO = -5 to -9 V

I

Output Current

O

Power Dissipation

tot

Storage Temperature Range

stg

Operating Junction Temperature Range For L79L00C, L79L00AC

op

V

= -12 to -15 V

O

Internally Limited (*)

For L79L00AB -40 to 125 °C

(*) Our SO -8 package used for Voltage Regulators is mo di f i ed i nternally to have pins 2, 3, 6 and 7 electrically com muned to the die attach
flag. This particular frame decreases the total thermal resistance of the package and increases its ability to dissipate power when an appro­priate area of copper on the printed circuit board is available for heat-sinking. The external dimensions are the same as for the standard SO-8.

Table 2: Thermal Data

Symbol Parameter SO-8 TO-92 SOT-89 Unit

R

thj-case

R

thj-amb

Thermal Resistance Junction-case Max
Thermal Resistance Junction-ambient Max

20 15 °C/W

55 (*) 200 °C/W

-30

-35

100 mA

-40 to 150 °C
0 to 125 °C

V

(*) Cons i d ering 6 cm2 of copper Bo ard heat-sink.

Figure 2: Pin Connection (top view, bottom view for TO-92)

SO-8 TO-92

SOT-89

PIN 1 = GND
PIN 2 = V
PIN 3 = V

IN
OUT

2/17

Table 3: Order Codes

TYPE SO-8 (TUBE)* TO-92 (TUBE)** SOT-89 (T&R) OUTPUT VOLTAGE

L79L05C L79L05CD L79L05CZ -5 V
L79L05AC L79L05ACD L79L05ACZ L79L05ACU -5 V
L79L05AB L 79L0 5ABD L79L 05AB Z L79 L05A BU -5 V

L79L06C L79L06CD L79L06CZ -6 V
L79L06AC L79L06ACD L79L06ACZ L79L06ACU -6 V
L79L06AB L 79L0 6ABD L79L 06AB Z L79 L06A BU -6 V

L79L08C L79L08CD L79L08CZ -8 V
L79L08AC L79L08ACD L79L08ACZ L79L08ACU -8 V
L79L08AB L 79L0 8ABD L79L 08AB Z L79 L08A BU -8 V

L79L09C L79L09CD L79L09CZ -9 V
L79L09AC L79L09ACD L79L09ACZ L79L09ACU -9 V
L79L09AB L 79L0 9ABD L79L 09AB Z L79 L09A BU -9 V

L79L12C L79L12CD L79L12CZ -12 V
L79L12AC L79L12ACD L79L12ACZ L79L12ACU -12 V
L79L12AB L79L12ABD L79L12ABZ L79L12ABU -12 V

L79L15C L79L15CD L79L15CZ -15 V
L79L15AC L79L15ACD L79L15ACZ -15 V
L79L15AB L79L15ABD L79L15ABZ -15 V

L79L00 SERIES

(*) Avai l abl e in Tape & Reel with the suffix "13TR".
(**) Avai l able in Ammopak with the suffix "-AP" or in Tape & Reel with the suffix "-TR". Please note that in these cas es pins are shaped

accordi ng to Tape & Reel specificati ons.

Figure 3: Test Circui t s

3/17

L79L00 SERIES

Table 4: Electrical Characteristics Of L79L05 (refer to the test circuits, TJ = 0 to 125°C, VI = -10V,

= 40 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified).

I

O

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

Output Voltage TJ = 25°C -4.6 -5 -5.4 V

O

Output Voltage IO = 1 to 40 mA VI = -7 to -20 V -4.5 -5.5 V

V

O

= 1 to 70 mA VI = -10 V -4.5 -5.5

I

O

∆V

∆V

SVR Supply Voltage Rejection I

Line Regulation VI = -7 to -20 V TJ = 25°C 200 mV

O

= -8 to -20 V TJ = 25°C 150

V

I

Load Regulation IO = 1 to 100 mA TJ = 25°C 60 mV

O

= 1 to 40 mA TJ = 25°C 30

I

O

Quiescent Current TJ = 25°C 6 mA

I

d

T

= 125°C 5.5

J

Quiescent Current Change IO = 1 to 40 mA 0.2 mA

∆I

d

= -8 to -20 V 1.5

V

I

eN Output Noise Voltage B = 10Hz to 100KHz T

= 40 mA f = 120Hz TJ = 25°C

O

V

= -8 to -18 V

I

Dropout Voltage 1.7 V

V

d

= 25°C 40 µV

J

40 49 dB

Table 5: Electrical Characteristics Of L79L06 (refer to the test circuits, T

= 40 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified).

I

O

= 0 to 125°C, VI = -12V,

J

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

Output Voltage TJ = 25°C -5.52 -6 -6.48 V

O

V

Output Voltage IO = 1 to 40 mA VI = -8.5 to -20 V -5.4 -6.6 V

O

= 1 to 70 mA VI = -12 V -5.4 -6.6

I

O

∆V

∆V

SVR Supply Voltage Rejection I

Line Regulation VI = -8.5 to -20 V TJ = 25°C 200 mV

O

= -9 to -20 V TJ = 25°C 150

V

I

Load Regulation IO = 1 to 100 mA TJ = 25°C 60 mV

O

= 1 to 40 mA TJ = 25°C 30

I

O

Quiescent Current TJ = 25°C 6 mA

I

d

= 125°C 5.5

T

J

Quiescent Current Change IO = 1 to 40 mA 0.2 mA

∆I

d

V

= -8 to -20 V 1.5

I

eN Output Noise Voltage B = 10Hz to 100KHz T

= 40 mA f = 120Hz TJ = 25°C

O

V

= -9 to -20 V

I

Dropout Voltage 1.7 V

V

d

= 25°C 50 µV

J

38 46 dB

4/17

L79L00 SERIES

Table 6: Electrical Characteristics Of L79L08 (refer to the test circuits, TJ = 0 to 125°C, VI = -14V,

= 40 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified).

I

O

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

Output Voltage TJ = 25°C -7.36 -8 -8.64 V

O

Output Voltage IO = 1 to 40 mA VI = -10.5 to -23 V -7.2 -8.8 V

V

O

= 1 to 70 mA VI = -14 V -7.2 -8.8

I

O

∆V

∆V

SVR Supply Voltage Rejection I

Line Regulation VI = -10.5 to -23 V TJ = 25°C 200 mV

O

= -11 to -23 V TJ = 25°C 150

V

I

Load Regulation IO = 1 to 100 mA TJ = 25°C 80 mV

O

= 1 to 40 mA TJ = 25°C 40

I

O

Quiescent Current TJ = 25°C 6 mA

I

d

T

= 125°C 5.5

J

Quiescent Current Change IO = 1 to 40 mA 0.2 mA

∆I

d

= -11 to -23 V 1.5

V

I

eN Output Noise Voltage B = 10Hz to 100KHz T

= 40 mA f = 120Hz TJ = 25°C

O

V

= -12 to -23 V

I

Dropout Voltage 1.7 V

V

d

= 25°C 60 µV

J

36 45 dB

Table 7: Electrical Characteristics Of L79L09 (refer to the test circuits, T

= 40 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified).

I

O

= 0 to 125°C, VI = -15V,

J

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

Output Voltage TJ = 25°C -8.28 -9 -9.72 V

O

Output Voltage IO = 1 to 40 mA VI = -11.5 to -23 V -8.1 -9.9 V

V

O

= 1 to 70 mA VI = -15 V -8.1 -9.9

I

O

∆V

∆V

SVR Supply Voltage Rejection I

Line Regulation VI = -11.5 to -23 V TJ = 25°C 250 mV

O

V

= -12 to -23 V TJ = 25°C 200

I

Load Regulation IO = 1 to 100 mA TJ = 25°C 80 mV

O

= 1 to 40 mA TJ = 25°C 40

I

O

Quiescent Current TJ = 25°C 6 mA

I

d

= 125°C 5.5

T

J

∆I

Quiescent Current Change IO = 1 to 40 mA 0.2 mA

d

= -12 to -23 V 1.5

V

I

eN Output Noise Voltage B = 10Hz to 100KHz T

= 40 mA f = 120Hz TJ = 25°C

O

V

= -12 to -23 V

I

Dropout Voltage 1.7 V

V

d

= 25°C 70 µV

J

36 44 dB

5/17

L79L00 SERIES

Table 8: Electrical Characteristics Of L79L12 (refer to the test circuits, TJ = 0 to 125°C, VI = -19V,

= 40 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified).

I

O

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

Output Voltage TJ = 25°C -11.1 -12 -1 2.9 V

O

Output Voltage IO = 1 to 40 mA VI = -14.5 to -27 V -10.8 -13.2 V

V

O

= 1 to 70 mA VI = -19 V -10.8 -13.2

I

O

∆V

∆V

SVR Supply Voltage Rejection I

Line Regulation VI = -14.5 to -27 V TJ = 25°C 250 mV

O

= -16 to -27 V TJ = 25°C 200

V

I

Load Regulation IO = 1 to 100 mA TJ = 25°C 100 mV

O

= 1 to 40 mA TJ = 25°C 50

I

O

Quiescent Current TJ = 25°C 6.5 mA

I

d

T

= 125°C 6

J

Quiescent Current Change IO = 1 to 40 mA 0.2 mA

∆I

d

= -16 to -27 V 1.5

V

I

eN Output Noise Voltage B = 10Hz to 100KHz T

= 40 mA f = 120Hz TJ = 25°C

O

V

= -15 to -25 V

I

Dropout Voltage 1.7 V

V

d

= 25°C 80 µV

J

36 42 dB

Table 9: Electrical Characteristics Of L79L15 (refer to the test circuits, T

= 40 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified).

I

O

= 0 to 125°C, VI = -23V,

J

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

Output Voltage TJ = 25°C -13.8 -15 -1 6.2 V

O

V

Output Voltage IO = 1 to 40 mA VI = -17.5 to -30 V -13.5 -16.5 V

O

= 1 to 70 mA VI = -23 V -13.5 -16.5

I

O

∆V

∆V

SVR Supply Voltage Rejection I

Line Regulation VI = -17.5 to -30 V TJ = 25°C 300 mV

O

= -20 to -30 V TJ = 25°C 250

V

I

Load Regulation IO = 1 to 100 mA TJ = 25°C 150 mV

O

= 1 to 40 mA TJ = 25°C 75

I

O

Quiescent Current TJ = 25°C 6.5 mA

I

d

= 125°C 6

T

J

Quiescent Current Change IO = 1 to 40 mA 0.2 mA

∆I

d

V

= -20 to -30 V 1.5

I

eN Output Noise Voltage B = 10Hz to 100KHz T

= 40 mA f = 120Hz TJ = 25°C

O

V

= -18.5 to -28.5 V

I

Dropout Voltage 1.7 V

V

d

= 25°C 90 µV

J

33 39 dB

6/17