1
2
3
4
8
7
6
5
OUTPUT
INPUT
†
INPUT
†
NC
NC
INPUT
†
INPUT
†
COMMON
D PACKAGE
(TOP VIEW)
NC–No internal connection
LP PACKAGE
(TOP VIEW)
†
Internally connected
OUTPUT
INPUT
COMMON
MC79L00 SERIES
NEGATIVE-VOLTAGE REGULATORS
SLVS011B – OCTOBER 1982 – REVISED FEBRUARY 2000
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251–1443
D
3-Terminal Regulators
D
Output Current Up to 100 mA
D
No External Components Required
D
Internal Thermal-Overload Protection
D
Internal Short-Circuit Current Limiting
D
Direct Replacement for Motorola MC79L00
Series
D
Available in 5% or 10% Selections
description
This series of fixed negative-voltage integrated-circuit
voltage regulators is designed for a wide range of
applications. These include on-card regulation for
elimination of noise and distribution problems
associated with single-point regulation. In addition,
they can be used to control series pass elements to make high-current voltage-regulator circuits. One of these
regulators can deliver up to 100 mA of output current. The internal current-limiting and thermal-shutdown features
make them essentially immune to overload. When used as a replacement for a zener-diode and resistor combination,
these devices can provide an effective improvement in output impedance of two orders of magnitude, with lower bias
current.
The MC79L00C series is characterized for operation over the virtual junction temperature range of 0°C to 125°C.
AVAILABLE OPTIONS
PACKAGED DEVICES
NOMINAL
OUTPUT VOLTAGE TOLERANCE
T
J
OUTPUT
VOLTAGE
(V)
SMALL OUTLINE
(D)
PLASTIC CYLINDRICAL
(LP)
(V)
5% 10% 5% 10%
0°C to 125°C
–5
–12
–15
MC79L05ACD
‡
MC79L12ACD
‡
MC79L15ACD
–
MC79L12CD
MC79L15CD
MC79L05ACLP
‡
MC79L12ACLP
‡
MC79L15ACLP
§
–
MC79L12CLP
–
‡
This device is available taped and reeled. Add the suffix R to the device type (e.g., MC79L05ACDR).
§
This device is available taped and reeled or in ammo pack. Add the suffix M to the device type for ammo pack
(e.g., MC79L15ACLPM).
Copyright 2000, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
MC79L00 SERIES
NEGATIVE-VOLTAGE REGULATORS
SLVS011B – OCTOBER 1982 – REVISED FEBRUARY 2000
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251–1443
equivalent schematic
OUTPUT
INPUT
COMMON
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Input voltage: MC79L05 –30 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MC79L12, MC79L15 –35 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air, case, or virtual junction temperature 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance, θJA (see Notes 1 and 2): D package 97°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . .
LP package 196°C/W. . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1.6 mm (1/16 inch) from case for 10 seconds 260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied.
Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability .
NOTES: 1. Maximum power dissipation is a function of TJ(max),
θ
JA
, and TA. The maximum allowable power dissipation at any allowable ambient
temperature is PD = (TJ(max) – TA)/
θ
JA
. Operating at the absolute maximum TJ of 150°C can impact reliability.
2. The package thermal impedance is calculated in accordance with JESD 51.
recommended operating conditions
MIN MAX UNIT
MC79L05 –7 –20
Input voltage, V
I
MC79L12 –14.5 –27 V
MC79L15 –17.5 –30
Output current, I
O
100 mA
Operating virtual junction temperature, T
J
0 125 °C
MC79L00 SERIES
NEGATIVE-VOLTAGE REGULATORS
SLVS011B – OCTOBER 1982 – REVISED FEBRUARY 2000
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251–1443
electrical characteristics at specified virtual junction temperature, VI = –10 V, IO = 40 mA (unless
otherwise noted)
MC79L05C MC79L05AC
PARAMETER
TEST CONDITIONS
†
T
J
MIN TYP MAX MIN TYP MAX
UNIT
25°C –4.6 –5 –5.4 –4.8 –5 –5.2
Output voltage
‡
VI = –7 V to –20 V,
IO = 1 mA to 40 mA
0°C to 125°C –4.5 –5.5 –4.75 –5.25
V
VI = –10 V ,
IO = 1 mA to 70 mA
0°C to 125°C –4.5 –5.5 –4.75 –5.25
p
VI = –7 V to –20 V
200 150
Input regulation
VI = –8 V to –20 V
25°C
150 100
mV
Ripple rejection
VI = –8 V to –18 V,
f = 120 Hz
25°C 40 49 41 49 dB
p
IO = 1 mA to 100 mA
60 60
Output regulation
IO = 1 mA to 40 mA
25°C
30 30
mV
Output noise voltage f = 10 Hz to 100 kHz 25°C 40 40 µV
Dropout voltage IO = 40 mA 25°C 1.7 1.7 V
25°C 6 6
Bias current
125°C 5.5 5.5
mV
VI = –8 V to –20 V
°
°
1.5 1.5
Bias current change
IO = 1 mA to 40 mA
0°C to 125°C
0.2 0.1
mV
†
All characteristics are measured with a 0.33-µF capacitor across the input and a 0.1-µF capacitor across the output. Pulse-testing techniques are
used to maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately .
‡
This specification applies only for dc power dissipation permitted by absolute maximum ratings.
electrical characteristics at specified virtual junction temperature, VI = –19 V, I
O
= 40 mA (unless
otherwise noted)
MC79L12C MC79L12AC
PARAMETER
TEST CONDITIONS
†
T
J
MIN TYP MAX MIN TYP MAX
UNIT
25°C –11.1 –12 –12.9 –11.5 –12 –12.5
Output voltage
‡
VI = –14.5 V to –27 V ,
IO = 1 mA to 40 mA
0°C to 125°C –10.8 –13.2 –11.4 –12.6
V
VI = –19 V,
IO = 1 mA to 70 mA
0°C to 125°C –10.8 –13.2 –11.4 –12.6
p
VI = –14.5 V to –27 V
250 250
Input regulation
VI = –16 V to –27 V
25°C
200 200
mV
Ripple rejection
VI = –15 V to –25 V,
f = 120 Hz
25°C 36 42 37 42 dB
p
IO = 1 mA to 100 mA
100 100
Output regulation
IO = 1 mA to 40 mA
25°C
50 50
mV
Output noise voltage f = 10 Hz to 100 kHz 25°C 80 80 µV
Dropout voltage IO = 40 mA 25°C 1.7 1.7 V
25°C 6.5 6.5
Bias current
125°C 6 6
mV
VI = –16 V to –27 V
1.5 1.5
Bias current change
IO = 1 mA to 40 mA
0°C to 125°C
0.2 0.1
mV
†
All characteristics are measured with a 0.33-µF capacitor across the input and a 0.1-µF capacitor across the output. Pulse-testing techniques are
used to maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately .
‡
This specification applies only for dc power dissipation permitted by absolute maximum ratings.
MC79L00 SERIES
NEGATIVE-VOLTAGE REGULATORS
SLVS011B – OCTOBER 1982 – REVISED FEBRUARY 2000
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251–1443
electrical characteristics at specified virtual junction temperature, VI = –23 V, IO = 40 mA (unless
otherwise noted)
MC79L15C MC79L15AC
PARAMETER
TEST CONDITIONS
†
T
J
MIN TYP MAX MIN TYP MAX
UNIT
25°C –13.8 –15 –16.2 –14.4 –15 –15.6
VI = –17.5 V to –30 V,
°
°
Output voltage
‡
I
IO = 1 mA to 40 mA
0°C to 125°C
–13.
5–16.5–14.25–15.75
V
VI = –23 V ,
I
IO = 1 mA to 70 mA
0°C to 125°C
–13.
5–16.5–14.25–15.75
p
VI = –17.5 V to –30 V
°
300 300
Input regulation
VI = –17.5 V to –30 V
25°C
250 250
mV
pp
VI = –18.5 V to –28.5 V ,
Ripple rejection
I
f = 120 Hz
25°C
33393439dB
p
IO = 1 mA to 100 mA
150 150
Output regulation
IO = 1 mA to 40 mA
25°C
75 75
mV
Output noise voltage f = 10 Hz to 100 kHz 25°C 90 90 µV
Dropout voltage IO = 40 mA 25°C 1.7 1.7 V
25°C 6.5 6.5
Bias current
125°C 6 6
mV
VI = –20 V to –30 V
1.5 1.5
Bias current change
IO = 1 mA to 40 mA
0°C to 125°C
0.2 0.1
mV
†
All characteristics are measured with a 0.33-µF capacitor across the input and a 0.1-µF capacitor across the output. Pulse-testing techniques are
used to maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately .
‡
This specification applies only for dc power dissipation permitted by absolute maximum ratings.
IMPORTANT NOTICE
T exas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
CERT AIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR
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BE FULLY AT THE CUSTOMER’S RISK.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
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party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 2000, Texas Instruments Incorporated
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